
EFA CORPORATION

E5TX-AT

Device Type         Mainboard
Processor           CX 6X86/CX 6X86L/CX 686MX/AM K5/AM K6/Pentium/Pentium
                    MMX
Processor Speed     75/90/100/120/133/150/166/200/233MHz
Chip Set            Intel
Video Chip Set      None
Maximum Onboard     256MB (EDO & SDRAM supported)
Memory
Maximum Video       None
Memory
Cache               256/512KB
BIOS                Award
Dimensions          230mm x 220mm
I/O Options         32-bit PCI slots (4), floppy drive interface, green PC
                    connector, IDE interfaces (2), parallel port, PS/2
                    mouse interface, serial ports (2), IR connector, USB
                    connector
NPU Options         None

[Image]

                                CONNECTIONS

  Purpose              Location      Purpose                Location

  Serial port 2           CN1        Speaker            J11/pins 1/3/5/7

  Serial port 1           CN2        Power LED &             J11/pins
                                     keylock               2/4/6/8/10

  Floppy drive            CN3        Turbo LED          J11/pins 11 & 12
  interface

  Parallel port           CN4        Green PC           J11/pins 13 & 14
                                     connector

  IDE interface 2         CN5        IDE interface      J11/pins 15 & 16
                                     LED

  IDE interface 1         CN6        Reset switch       J11/pins 17 & 18

  PS/2 mouse              J1         Green PC LED       J11/pins 19 & 20
  interface

  IR connector            J4         External battery          J12

  USB connector           J10        32-bit PCI slots       PC1  PC4

                        USER CONFIGURABLE SETTINGS

               Function                    Label           Position

     Factory configured - do not           JP8          Unidentified
      alter

     CMOS memory normal operation         JP13        Pins 1 & 2 closed

      CMOS memory clear                    JP13        Pins 2 & 3 closed

              SIMM CONFIGURATION

      Size          Bank 0          Bank 1

      8MB         (2) 1M x 36        None

      16MB        (2) 2M x 36        None

      16MB        (2) 1M x 36    (2) 1M x 36

      24MB        (2) 2M x 36    (2) 1M x 36

      32MB        (2) 4M x 36        None

      32MB        (2) 2M x 36    (2) 2M x 36

      40MB        (2) 4M x 36    (2) 1M x 36

      48MB        (2) 4M x 36    (2) 2M x 36

      64MB        (2) 8M x 36        None

      64MB        (2) 4M x 36    (2) 4M x 36

      72MB        (2) 8M x 36    (2) 1M x 36

      80MB        (2) 8M x 36    (2) 2M x 36

      96MB        (2) 8M x 36    (2) 4M x 36

     128MB        (2) 8M x 36    (2) 8M x 36

     128MB        (2) 16M x 36       None

     136MB        (2) 16M x 36   (2) 1M x 36

     144MB        (2) 16M x 36   (2) 2M x 36

     160MB        (2) 16M x 36   (2) 4M x 36

     192MB        (2) 16M x 36   (2) 8M x 36

     256MB        (2) 16M x 36   (2) 16M x 36

  Note: Board accepts EDO memory.

               DIMM CONFIGURATION

      Size          Bank 2          Bank 3

      8MB         (1) 1M x 64        None

      16MB        (1) 2M x 64        None

      16MB        (1) 1M x 64     (1) 1M x 64

      24MB        (1) 2M x 64     (1) 1M x 64

      32MB        (1) 4M x 64        None

      32MB        (1) 2M x 64     (1) 2M x 64

      40MB        (1) 4M x 64     (1) 1M x 64

      48MB        (1) 4M x 64     (1) 2M x 64

      64MB        (1) 8M x 64        None

      64MB        (1) 4M x 64     (1) 4M x 64

      72MB        (1) 8M x 64     (1) 1M x 64

      80MB        (1) 8M x 64     (1) 2M x 64

      96MB        (1) 8M x 64     (1) 4M x 64

     128MB       (1) 16M x 64        None

     128MB        (1) 8M x 64     (1) 8M x 64

     136MB       (1) 16M x 64     (1) 1M x 64

     144MB       (1) 16M x 64     (1) 2M x 64

     160MB       (1) 16M x 64     (1) 4M x 64

     192MB       (1) 16M x 64     (1) 8M x 64

     256MB       (1) 16M x 64    (1) 16M x 64

            Note: Board accepts SDRAM memory.

              CACHE CONFIGURATION

      Size          Bank 0           TAG

     256KB        (2) 32K x 32   Unidentified

     512KB        (2) 64K x 32   Unidentified

                       CPU SPEED SELECTION (CX 6X86)

    CPU       Clock     Multiplier     JP1    JP2     JP3    JP6     JP7
   speed      speed

  150MHz      60MHz         2x         1 &     1 &    2 &     1 &   2 & 3
                                        2      2       3      2

  166MHz      66MHz         2x         1 &     1 &    1 &     1 &   2 & 3
                                        2      2       2      2

  Note: Pins designated should be in the closed position.

                      CPU SPEED SELECTION (CX 6X86L)

    CPU       Clock     Multiplier     JP1    JP2     JP3    JP6     JP7
   speed      speed

  166MHz      66MHz         2x         1 &     1 &    1 &     1 &   2 & 3
                                        2      2       2      2

  Note: Pins designated should be in the closed position.

                      CPU SPEED SELECTION (CX 6X86MX)

    CPU       Clock     Multiplier     JP1    JP2     JP3    JP6     JP7
   speed      speed

  166MHz      60MHz        2.5x        1 &     1 &    2 &     2 &   2 & 3
                                        2      2       3      3

  166MHz      66MHz         2x         1 &     1 &    1 &     1 &   2 & 3
                                        2      2       2      2

  200MHz      66MHz        2.5x        1 &     1 &    1 &     2 &   2 & 3
                                        2      2       2      3

  Note: Pins designated should be in the closed position.

                        CPU SPEED SELECTION (AM K5)

    CPU       Clock     Multiplier     JP1    JP2     JP3    JP6     JP7
   speed      speed

   90MHz      60MHz        1.5x        1 &     1 &    2 &     1 &   1 & 2
                                        2      2       3      2

  100MHz      66MHz        1.5x        1 &     1 &    1 &     1 &   1 & 2
                                        2      2       2      2

  120MHz      60MHz        1.5x        1 &     1 &    2 &     1 &   1 & 2
                                        2      2       3      2

  133MHz      66MHz        1.5x        1 &     1 &    1 &     1 &   1 & 2
                                        2      2       2      2

  150MHz      60MHz        2.5x        1 &     1 &    2 &     2 &   2 & 3
                                        2      2       3      3

  166MHz      66MHz        2.5x        1 &     1 &    1 &     2 &   2 & 3
                                        2      2       2      3

  Note: Pins designated should be in the closed position.

                        CPU SPEED SELECTION (AM K6)

    CPU       Clock     Multiplier     JP1    JP2     JP3    JP6     JP7
   speed      speed

  166MHz      66MHz        2.5x        1 &     1 &    1 &     2 &   2 & 3
                                        2      2       2      3

  200MHz      66MHz         3x         1 &     1 &    1 &     2 &   1 & 2
                                        2      2       2      3

  233MHz      66MHz        3.5x        1 &     1 &    1 &     1 &   1 & 2
                                        2      2       2      2

  Note: Pins designated should be in the closed position.

                        CPU SPEED SELECTION (INTEL)

    CPU       Clock     Multiplier     JP1    JP2     JP3    JP6     JP7
   speed      speed

   90MHz      60MHz        1.5x        1 &     1 &    2 &     1 &   1 & 2
                                        2      2       3      2

  100MHz      66MHz        1.5x        1 &     1 &    1 &     1 &   1 & 2
                                        2      2       2      2

  120MHz      60MHz         2x         1 &     1 &    2 &     1 &   2 & 3
                                        2      2       3      2

  133MHz      66MHz         2x         1 &     1 &    1 &     1 &   2 & 3
                                        2      2       2      2

  150MHz      60MHz        2.5x        1 &     1 &    2 &     2 &   2 & 3
                                        2      2       3      3

  166MHz      66MHz        2.5x        1 &     1 &    1 &     2 &   2 & 3
                                        2      2       2      3

  200MHz      66MHz         3x         1 &     1 &    1 &     2 &   1 & 2
                                        2      2       2      3

  Note: Pins designated should be in the closed position.

                      CPU SPEED SELECTION (INTEL MMX)

    CPU       Clock     Multiplier     JP1    JP2     JP3    JP6     JP7
   speed      speed

  166MHz      66MHz        2.5x        1 &     1 &    1 &     2 &   2 & 3
                                        2      2       2      3

  200MHz      66MHz         3x         1 &     1 &    1 &     2 &   1 & 2
                                        2      2       2      3

  233MHz      66MHz        3.5x        1 &     1 &    1 &     1 &   1 & 2
                                        2      2       2      2

  Note: Pins designated should be in the closed position.

                           CPU VOLTAGE SELECTION

    Voltage         JP9            JP10          JP11            JP12

     2.0v        Pins 2 & 3     Pins 2 & 3     Pins 2 & 3     Pins 2 & 3
                   closed         closed        closed          closed

     2.5v        Pins 1 & 2     Pins 2 & 3     Pins 1 & 2     Pins 2 & 3
                   closed         closed        closed          closed

     2.8v        Pins 2 & 3     Pins 2 & 3     Pins 2 & 3     Pins 1 & 2
                   closed         closed        closed          closed

     2.9v        Pins 1 & 2     Pins 2 & 3     Pins 2 & 3     Pins 1 & 2
                   closed         closed        closed          closed

     3.2v        Pins 2 & 3     Pins 2 & 3     Pins 1 & 2     Pins 1 & 2
                   closed         closed        closed          closed

     3.3v        Pins 1 & 2     Pins 2 & 3     Pins 1 & 2     Pins 1 & 2
                   closed         closed        closed          closed

     3.45v       Pins 2 & 3     Pins 1 & 2     Pins 1 & 2     Pins 1 & 2
                   closed         closed        closed          closed

     3.52v       Pins 1 & 2     Pins 1 & 2     Pins 1 & 2     Pins 1 & 2
                   closed         closed        closed          closed

