URI: 
  TEXT View Source
       
       # TYAN COMPUTER CORPORATION
       
          S1590
       
          Device     Mainboard                                            
          Type       
          Processor  CX 6X86/IBM 6X86/CX 686MX/IBM 6X86MX/CX MII/IDT C6/  
                                                                          
                     AM K5/ AM K6/Pentium/Pentium MMX                     
          Processor  75/90/100/120/133/150/166/180/200/225/233/266/300MHz 
          Speed      
          Chip Set   VIA MVP3                                             
          Maximum    768MB (EDO & SDRAM supported)                        
          Onboard    
          Memory     
          Cache      1024KB                                               
          BIOS       Award                                                
          Dimensions 254mm x 218mm                                        
          I/O        32-bit PCI slots (4), floppy drive interface, green  
          Options    PC connector, IDE interfaces (2), parallel port,     
                     PS/2 mouse interface, serial ports (2), IR           
                     connector, USB connector, ATX power connector, AGP   
                     slot, wake on LAN connector                          
       
   IMG IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose           | Location | Purpose        |  Location  |
          |-------------------+----------+----------------+------------|
          | AGP slot          |   AGP    | Soft off power | J5/pins 1  |
          |                   |          | supply         |    & 2     |
          |-------------------+----------+----------------+------------|
          | ATX power         |   ATX    | Green PC       | J5/pins 3  |
          | connector         |          | connector      |    & 4     |
          |-------------------+----------+----------------+------------|
          | IDE interface 1   |   CN1    | IR connector   | J5/pins 6  |
          |                   |          |                |    – 11    |
          |-------------------+----------+----------------+------------|
          | IDE interface 2   |   CN2    | IDE interface  | J5/pins 13 |
          |                   |          | LED            |    & 14    |
          |-------------------+----------+----------------+------------|
          | Parallel port     |   CN3    | Power LED      | J5/pins 18 |
          |                   |          |                |    & 20    |
          |-------------------+----------+----------------+------------|
          | Serial port 2     |   CN4    | Reset switch   | J5/pins 22 |
          |                   |          |                |    & 23    |
          |-------------------+----------+----------------+------------|
          | Serial port 1     |   CN5    | Speaker        | J5/pins 24 |
          |                   |          |                |    - 27    |
          |-------------------+----------+----------------+------------|
          | Floppy drive      |   CN6    | Power LED &    |     J8     |
          | interface         |          | keylock        |            |
          |-------------------+----------+----------------+------------|
          | PS/2 mouse        |   CN7    | Chassis fan    |    J10     |
          | interface         |          | power          |            |
          |-------------------+----------+----------------+------------|
          | Chassis fan power |    J1    | 32-bit PCI     | PC1 – PC4  |
          |                   |          | slots          |            |
          |-------------------+----------+----------------+------------|
          | Wake on LAN       |    J3    | USB connector  |    USB     |
          | connector         |          |                |            |
          |-------------------+----------+----------------+------------|
          | Chassis fan power |    J4    |                |            |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |             Function             | Label |    Position     |
          |----------------------------------+-------+-----------------|
          |   | Clock speed select CPU clock |  JP6  |   Pins 1 & 2    |
          |   |                              |       |     closed      |
          |---+------------------------------+-------+-----------------|
          |   | Clock speed select AGP clock |  JP6  |   Pins 2 & 3    |
          |   |                              |       |     closed      |
          |---+------------------------------+-------+-----------------|
          |   | Power supply type select AT  |  JP7  |     Closed      |
          |---+------------------------------+-------+-----------------|
          |   | Power supply type select ATX |  JP7  |      Open       |
          |---+------------------------------+-------+-----------------|
          | » | CMOS memory normal operation | JBAT  |   Pins 1 & 2    |
          |   |                              |       |     closed      |
          |---+------------------------------+-------+-----------------|
          |   | CMOS memory clear            | JBAT  |   Pins 2 & 3    |
          |   |                              |       |     closed      |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     SIMM CONFIGURATION                     |
          |------------------------------------------------------------|
          |            Size            |            Bank 0             |
          |----------------------------+-------------------------------|
          |            8MB             |          (2) 1M x 36          |
          |----------------------------+-------------------------------|
          |            16MB            |          (2) 2M x 36          |
          |----------------------------+-------------------------------|
          |            32MB            |          (2) 4M x 36          |
          |----------------------------+-------------------------------|
          |            64MB            |          (2) 8M x 36          |
          |----------------------------+-------------------------------|
          |           128MB            |         (2) 16M x 36          |
          |----------------------------+-------------------------------|
          |           256MB            |         (2) 32M x 36          |
          |------------------------------------------------------------|
          |      Note: Board accepts EDO memory.                       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     DIMM CONFIGURATION                     |
          |------------------------------------------------------------|
          |    Size    |    Bank 0     |    Bank 1     |    Bank 2     |
          |------------+---------------+---------------+---------------|
          |    8MB     |  (1) 1M x 64  |     None      |     None      |
          |------------+---------------+---------------+---------------|
          |    16MB    |  (1) 1M x 64  |  (1) 1M x 64  |     None      |
          |------------+---------------+---------------+---------------|
          |    16MB    |  (1) 2M x 64  |     None      |     None      |
          |------------+---------------+---------------+---------------|
          |    24MB    |  (1) 1M x 64  |  (1) 1M x 64  |  (1) 1M x 64  |
          |------------+---------------+---------------+---------------|
          |    32MB    |  (1) 2M x 64  |  (1) 2M x 64  |     None      |
          |------------+---------------+---------------+---------------|
          |    32MB    |  (1) 4M x 64  |     None      |     None      |
          |------------+---------------+---------------+---------------|
          |    48MB    |  (1) 2M x 64  |  (1) 2M x 64  |  (1) 2M x 64  |
          |------------+---------------+---------------+---------------|
          |    64MB    |  (1) 4M x 64  |  (1) 4M x 64  |     None      |
          |------------+---------------+---------------+---------------|
          |    64MB    |  (1) 8M x 64  |     None      |     None      |
          |------------+---------------+---------------+---------------|
          |    96MB    |  (1) 4M x 64  |  (1) 4M x 64  |  (1) 4M x 64  |
          |------------+---------------+---------------+---------------|
          |   128MB    |  (1) 8M x 64  |  (1) 8M x 64  |     None      |
          |------------+---------------+---------------+---------------|
          |   128MB    | (1) 16M x 64  |     None      |     None      |
          |------------+---------------+---------------+---------------|
          |   164MB    | (1) 16M x 64  |  (1) 1M x 64  |     None      |
          |------------+---------------+---------------+---------------|
          |   144MB    | (1) 16M x 64  |  (1) 1M x 64  |  (1) 1M x 64  |
          |------------+---------------+---------------+---------------|
          |   144MB    | (1) 16M x 64  |  (1) 2M x 64  |     None      |
          |------------+---------------+---------------+---------------|
          |   160MB    | (1) 16M x 64  |  (1) 2M x 64  |  (1) 2M x 64  |
          |------------+---------------+---------------+---------------|
          |   160MB    | (1) 16M x 64  |  (1) 4M x 64  |     None      |
          |------------+---------------+---------------+---------------|
          |   192MB    | (1) 16M x 64  |  (1) 4M x 64  |  (1) 4M x 64  |
          |------------+---------------+---------------+---------------|
          |   192MB    | (1) 16M x 64  |  (1) 8M x 64  |     None      |
          |------------+---------------+---------------+---------------|
          |   192MB    |  (1) 8M x 64  |  (1) 8M x 64  |  (1) 8M x 64  |
          |------------+---------------+---------------+---------------|
          |   256MB    | (1) 16M x 64  |  (1) 8M x 64  |  (1) 8M x 64  |
          |------------+---------------+---------------+---------------|
          |   256MB    | (1) 16M x 64  | (1) 16M x 64  |     None      |
          |------------+---------------+---------------+---------------|
          |   256MB    | (1) 32M x 64  |     None      |     None      |
          |------------+---------------+---------------+---------------|
          |   264MB    | (1) 32M x 64  |  (1) 1M x 64  |     None      |
          |------------+---------------+---------------+---------------|
          |   272MB    | (1) 32M x 64  |  (1) 1M x 64  |  (1) 1M x 64  |
          |------------+---------------+---------------+---------------|
          |   272MB    | (1) 32M x 64  |  (1) 2M x 64  |     None      |
          |------------+---------------+---------------+---------------|
          |   288MB    | (1) 32M x 64  |  (1) 4M x 64  |     None      |
          |------------+---------------+---------------+---------------|
          |   320MB    | (1) 32M x 64  |  (1) 4M x 64  |  (1) 4M x 64  |
          |------------+---------------+---------------+---------------|
          |   320MB    | (1) 32M x 64  |  (1) 8M x 64  |     None      |
          |------------+---------------+---------------+---------------|
          |   384MB    | (1) 32M x 64  |  (1) 8M x 64  |  (1) 8M x 64  |
          |------------+---------------+---------------+---------------|
          |   384MB    | (1) 32M x 64  | (1) 16M x 64  |     None      |
          |------------+---------------+---------------+---------------|
          |   384MB    | (1) 16M x 64  | (1) 16M x 64  | (1) 16M x 64  |
          |------------+---------------+---------------+---------------|
          |   512MB    | (1) 32M x 64  | (1) 16M x 64  | (1) 16M x 64  |
          |------------+---------------+---------------+---------------|
          |   512MB    | (1) 32M x 64  | (1) 32M x 64  |     None      |
          |------------+---------------+---------------+---------------|
          |   768MB    | (1) 32M x 64  | (1) 32M x 64  | (1) 32M x 64  |
          |------------------------------------------------------------|
          |      Note: Board accepts SDRAM memory.                     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 DIMM VOLTAGE CONFIGURATION                 |
          |------------------------------------------------------------|
          |      Voltage       |        JP1        |        JP2        |
          |--------------------+-------------------+-------------------|
          |         3v         |       Open        |      Closed       |
          |--------------------+-------------------+-------------------|
          |         5v         |      Closed       |       Open        |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    CACHE CONFIGURATION                     |
          |------------------------------------------------------------|
          |            Size            |            Bank 0             |
          |----------------------------+-------------------------------|
          |            1MB             |         (2) 128 x 32          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |               CPU SPEED SELECTION (CX 6X86)                |
          |------------------------------------------------------------|
          |  CPU  |  Clock   |Multiplier| JP3 | JP4 | JP5 |JP8|JP9|JP10|
          | speed |  speed   |          |     |     |     |   |   |    |
          |-------+----------+----------+-----+-----+-----+---+---+----|
          |166MHz |  66MHz   |    2x    |1 & 2|2 & 3|2 & 3|N/A|N/A|N/A |
          |-------+----------+----------+-----+-----+-----+---+---+----|
          |200MHz |  75MHz   |    2x    |1 & 2|1 & 2|2 & 3|N/A|N/A|N/A |
          |------------------------------------------------------------|
          |Note: Pins designated should be in the closed position.     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |               CPU SPEED SELECTION (IBM 6X86)               |
          |------------------------------------------------------------|
          |  CPU  |  Clock   |Multiplier| JP3 | JP4 | JP5 |JP8|JP9|JP10|
          | speed |  speed   |          |     |     |     |   |   |    |
          |-------+----------+----------+-----+-----+-----+---+---+----|
          |166MHz |  66MHz   |    2x    |1 & 2|2 & 3|2 & 3|N/A|N/A|N/A |
          |-------+----------+----------+-----+-----+-----+---+---+----|
          |200MHz |  75MHz   |    2x    |1 & 2|1 & 2|2 & 3|N/A|N/A|N/A |
          |------------------------------------------------------------|
          |                                                            |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |              CPU SPEED SELECTION (CX 6X86MX)               |
          |------------------------------------------------------------|
          |  CPU  | Clock |Multiplier|JP3 |JP4 |JP5 | JP8  | JP9  |JP10|
          | speed | speed |          |    |    |    |      |      |    |
          |-------+-------+----------+----+----+----+------+------+----|
          |166MHz | 66MHz |    2x    |1 & |2 & |2 & | N/A  | N/A  |N/A |
          |       |       |          | 2  | 3  | 3  |      |      |    |
          |-------+-------+----------+----+----+----+------+------+----|
          |200MHz | 66MHz |   2.5x   |1 & |2 & |2 & |Closed|Closed|Open|
          |       |       |          | 2  | 3  | 3  |      |      |    |
          |-------+-------+----------+----+----+----+------+------+----|
          |200MHz | 75MHz |    2x    |1 & |1 & |2 & | N/A  | N/A  |N/A |
          |       |       |          | 2  | 2  | 3  |      |      |    |
          |-------+-------+----------+----+----+----+------+------+----|
          |233MHz | 75MHz |   2.5x   |1 & |2 & |2 & |Closed|Closed|Open|
          |       |       |          | 2  | 3  | 3  |      |      |    |
          |-------+-------+----------+----+----+----+------+------+----|
          |233MHz | 83MHz |    2x    |1 & |2 & |1 & | N/A  | N/A  |N/A |
          |       |       |          | 2  | 3  | 2  |      |      |    |
          |------------------------------------------------------------|
          |Note: Pins designated should be in the closed position.     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |              CPU SPEED SELECTION (IBM 6X86MX)              |
          |------------------------------------------------------------|
          |  CPU  | Clock |Multiplier|JP3 |JP4 |JP5 | JP8  | JP9  |JP10|
          | speed | speed |          |    |    |    |      |      |    |
          |-------+-------+----------+----+----+----+------+------+----|
          |166MHz | 66MHz |    2x    |1 & |2 & |2 & | N/A  | N/A  |N/A |
          |       |       |          | 2  | 3  | 3  |      |      |    |
          |-------+-------+----------+----+----+----+------+------+----|
          |200MHz | 66MHz |   2.5x   |1 & |2 & |2 & |Closed|Closed|Open|
          |       |       |          | 2  | 3  | 3  |      |      |    |
          |-------+-------+----------+----+----+----+------+------+----|
          |200MHz | 75MHz |    2x    |1 & |1 & |2 & | N/A  | N/A  |N/A |
          |       |       |          | 2  | 2  | 3  |      |      |    |
          |-------+-------+----------+----+----+----+------+------+----|
          |233MHz | 75MHz |   2.5x   |1 & |2 & |2 & |Closed|Closed|Open|
          |       |       |          | 2  | 3  | 3  |      |      |    |
          |-------+-------+----------+----+----+----+------+------+----|
          |233MHz | 83MHz |    2x    |1 & |2 & |1 & | N/A  | N/A  |N/A |
          |       |       |          | 2  | 3  | 2  |      |      |    |
          |------------------------------------------------------------|
          |Note: Pins designated should be in the closed position.     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                CPU SPEED SELECTION (CX MII)                |
          |------------------------------------------------------------|
          |  CPU  | Clock  |Multiplier| JP3 |JP4 |JP5 | JP8  |JP9 |JP10|
          | speed | speed  |          |     |    |    |      |    |    |
          |-------+--------+----------+-----+----+----+------+----+----|
          |300MHz | 66MHz  |   3.5x   |1 & 2|2 & |2 & | Open |Open|Open|
          |       |        |          |     | 3  | 3  |      |    |    |
          |-------+--------+----------+-----+----+----+------+----+----|
          |300MHz | 75MHz  |    3x    |1 & 2|1 & |2 & |Closed|Open|Open|
          |       |        |          |     | 2  | 3  |      |    |    |
          |------------------------------------------------------------|
          |Note: Pins designated should be in the closed position.     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |               CPU SPEED SELECTION (IBM MII)                |
          |------------------------------------------------------------|
          |  CPU  | Clock  |Multiplier| JP3 |JP4 |JP5 | JP8  |JP9 |JP10|
          | speed | speed  |          |     |    |    |      |    |    |
          |-------+--------+----------+-----+----+----+------+----+----|
          |300MHz | 66MHz  |   3.5x   |1 & 2|2 & |2 & | Open |Open|Open|
          |       |        |          |     | 3  | 3  |      |    |    |
          |-------+--------+----------+-----+----+----+------+----+----|
          |300MHz | 75MHz  |    3x    |1 & 2|1 & |2 & |Closed|Open|Open|
          |       |        |          |     | 2  | 3  |      |    |    |
          |------------------------------------------------------------|
          |Note: Pins designated should be in the closed position.     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                CPU SPEED SELECTION (IDT C6)                |
          |------------------------------------------------------------|
          |  CPU  | Clock  |Multiplier| JP3 |JP4 |JP5 | JP8  |JP9 |JP10|
          | speed | speed  |          |     |    |    |      |    |    |
          |-------+--------+----------+-----+----+----+------+----+----|
          |200MHz | 66MHz  |    3x    |1 & 2|2 & |2 & |Closed|Open|Open|
          |       |        |          |     | 3  | 3  |      |    |    |
          |-------+--------+----------+-----+----+----+------+----+----|
          |225MHz | 75MHz  |    3x    |1 & 2|1 & |2 & |Closed|Open|Open|
          |       |        |          |     | 2  | 3  |      |    |    |
          |------------------------------------------------------------|
          |Note: Pins designated should be in the closed position.     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                CPU SPEED SELECTION (AM K5)                 |
          |------------------------------------------------------------|
          |  CPU  | Clock |Multiplier|JP3 |JP4 |JP5 | JP8  | JP9  |JP10|
          | speed | speed |          |    |    |    |      |      |    |
          |-------+-------+----------+----+----+----+------+------+----|
          |150MHz | 60MHz |   2.5x   |2 & |2 & |2 & |Closed|Closed|Open|
          |       |       |          | 3  | 3  | 3  |      |      |    |
          |-------+-------+----------+----+----+----+------+------+----|
          |166MHz | 66MHz |   2.5x   |1 & |2 & |2 & |Closed|Closed|Open|
          |       |       |          | 2  | 3  | 3  |      |      |    |
          |------------------------------------------------------------|
          |Note: Pins designated should be in the closed position.     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                CPU SPEED SELECTION (AM K6)                 |
          |------------------------------------------------------------|
          |  CPU  |Clock |Multiplier|JP3 |JP4 |JP5| JP8  | JP9  | JP10 |
          | speed |speed |          |    |    |   |      |      |      |
          |-------+------+----------+----+----+---+------+------+------|
          |166MHz |66MHz |   2.5x   |1 & |2 & |2 &|Closed|Closed| Open |
          |       |      |          | 2  | 3  | 3 |      |      |      |
          |-------+------+----------+----+----+---+------+------+------|
          |200MHz |66MHz |    3x    |1 & |2 & |2 &|Closed| Open | Open |
          |       |      |          | 2  | 3  | 3 |      |      |      |
          |-------+------+----------+----+----+---+------+------+------|
          |233MHz |66MHz |   3.5x   |1 & |2 & |2 &| Open | Open | Open |
          |       |      |          | 2  | 3  | 3 |      |      |      |
          |-------+------+----------+----+----+---+------+------+------|
          |266MHz |66MHz |    4x    |1 & |2 & |2 &| Open |Closed|Closed|
          |       |      |          | 2  | 3  | 3 |      |      |      |
          |-------+------+----------+----+----+---+------+------+------|
          |300MHz |66MHz |   4.5x   |1 & |2 & |2 &|Closed|Closed|Closed|
          |       |      |          | 2  | 3  | 3 |      |      |      |
          |------------------------------------------------------------|
          |Note: Pins designated should be in the closed position.     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |               CPU SPEED SELECTION (AM K6-2)                |
          |------------------------------------------------------------|
          |  CPU  | Clock |Multiplier|JP3 |JP4|JP5| JP8  | JP9  | JP10 |
          | speed | speed |          |    |   |   |      |      |      |
          |-------+-------+----------+----+---+---+------+------+------|
          |266MHz | 66MHz |    4x    |1 & |2 &|2 &| Open |Closed|Closed|
          |       |       |          | 2  | 3 | 3 |      |      |      |
          |-------+-------+----------+----+---+---+------+------+------|
          |300MHz |100MHz |    3x    |1 & |1 &|1 &|Closed| Open | Open |
          |       |       |          | 2  | 2 | 2 |      |      |      |
          |------------------------------------------------------------|
          |Note: Pins designated should be in the closed position.     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                CPU SPEED SELECTION (INTEL)                 |
          |------------------------------------------------------------|
          |  CPU  | Clock |Multiplier|JP3 |JP4 |JP5 | JP8  | JP9  |JP10|
          | speed | speed |          |    |    |    |      |      |    |
          |-------+-------+----------+----+----+----+------+------+----|
          |150MHz | 60MHz |   2.5x   |2 & |2 & |2 & |Closed|Closed|Open|
          |       |       |          | 3  | 3  | 3  |      |      |    |
          |-------+-------+----------+----+----+----+------+------+----|
          |166MHz | 66MHz |   2.5x   |1 & |2 & |2 & |Closed|Closed|Open|
          |       |       |          | 2  | 3  | 3  |      |      |    |
          |-------+-------+----------+----+----+----+------+------+----|
          |200MHz | 66MHz |    3x    |1 & |2 & |2 & |Closed| Open |Open|
          |       |       |          | 2  | 3  | 3  |      |      |    |
          |------------------------------------------------------------|
          |Note: Pins designated should be in the closed position.     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |              CPU SPEED SELECTION (INTEL MMX)               |
          |------------------------------------------------------------|
          |  CPU  | Clock |Multiplier|JP3 |JP4 |JP5 | JP8  | JP9  |JP10|
          | speed | speed |          |    |    |    |      |      |    |
          |-------+-------+----------+----+----+----+------+------+----|
          |166MHz | 66MHz |   2.5x   |1 & |2 & |2 & |Closed|Closed|Open|
          |       |       |          | 2  | 3  | 3  |      |      |    |
          |-------+-------+----------+----+----+----+------+------+----|
          |200MHz | 66MHz |    3x    |1 & |2 & |2 & |Closed| Open |Open|
          |       |       |          | 2  | 3  | 3  |      |      |    |
          |-------+-------+----------+----+----+----+------+------+----|
          |233MHz | 66MHz |   3.5x   |1 & |2 & |2 & | Open | Open |Open|
          |       |       |          | 2  | 3  | 3  |      |      |    |
          |------------------------------------------------------------|
          |Note: Pins designated should be in the closed position.     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     CPU TYPE SELECTION                     |
          |------------------------------------------------------------|
          |             Type              |            JP11            |
          |-------------------------------+----------------------------|
          |      Single voltage CPUs      |           Closed           |
          |-------------------------------+----------------------------|
          |       Dual voltage CPUs       |            Open            |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   CPU VOLTAGE SELECTION                    |
          |------------------------------------------------------------|
          | Voltage | JPW1/pins 1  | JPW1/pins | JPW1/pins | JPW1/pins |
          |         |     & 2      |   3 & 4   |   5 & 6   |   7 & 8   |
          |---------+--------------+-----------+-----------+-----------|
          |  2.0v   |     Open     |   Open    |   Open    |   Open    |
          |---------+--------------+-----------+-----------+-----------|
          |  2.1v   |    Closed    |   Open    |   Open    |   Open    |
          |---------+--------------+-----------+-----------+-----------|
          |  2.2v   |     Open     |  Closed   |   Open    |   Open    |
          |---------+--------------+-----------+-----------+-----------|
          |  2.7v   |    Closed    |  Closed   |  Closed   |   Open    |
          |---------+--------------+-----------+-----------+-----------|
          |  2.8v   |     Open     |   Open    |   Open    |  Closed   |
          |---------+--------------+-----------+-----------+-----------|
          |  2.9v   |    Closed    |   Open    |   Open    |  Closed   |
          |---------+--------------+-----------+-----------+-----------|
          |  3.2v   |     Open     |   Open    |  Closed   |  Closed   |
          |---------+--------------+-----------+-----------+-----------|
          |  3.3v   |    Closed    |   Open    |  Closed   |  Closed   |
          +------------------------------------------------------------+