
ANTEC, INC.

MB5689A

Device Type       Mainboard
Processor         CX 6X86/IBM 6X86/CX 6X86L/IBM 6X86L/CX 686MX/IBM 6X86MX/

                  IDT C6/AM K5/AM K6/Pentium/Pentium MMX
Processor Speed   75/90/100/120/133/150/166/200/233/266MHz
Chip Set          Intel 430TX
Video Chip Set    None
Maximum Onboard   256MB (EDO & SDRAM supported)
Memory
Maximum Video     None
Memory
Cache             512KB
BIOS              Award
Dimensions        254mm x 218mm
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
                  connectors (2), ATX power connector, wake on LAN
                  connector

[Image]

                                CONNECTIONS

  Purpose               Location       Purpose                Location

  ATX power                ATX         IDE interface LED    J107/pins 3 &
  connector                                                      4

  Floppy drive             CN1         Green PC LED         J107/pins 5 &
  interface                                                      6

  Serial port 1            CN2         Green PC             J107/pins 7 &
                                       connector                 8

  Serial port 2            CN3         Soft off power       J107/pins 9 &
                                       supply                    10

  Parallel port            CN4         Power LED &         J107/pins 11 
                                       keylock                   15

  IDE interface 1          J6          Speaker             J107/pins 17 -
                                                                 20

  IDE interface 2          J7          Wake on LAN              J109
                                       connector

  USB connector 1          J10         IR connector             JP3

  USB connector 2          J11         Chassis fan power        JP5

  PS/2 mouse               J99         EISCA cooling            JP6
  interface                            connector

  Reset switch        J107/pins 1 &    32-bit PCI slots      PC1  PC4
                            2

                        USER CONFIGURABLE SETTINGS

                Function                     Label           Position

      Flash BIOS voltage select 12v           JP19          Pins 1 & 2
                                                              closed

      Flash BIOS voltage select 5v            JP19          Pins 2 & 3
                                                              closed

     CMOS memory normal operation            JP40          Pins 1 & 2
                                                              closed

      CMOS memory clear                       JP40          Pins 2 & 3
                                                              closed

      Any hard drive installed                JP41          Pins 2 & 3
                                                              closed

      Seagate 5v hard drive installed         JP41          Pins 1 & 2
                                                              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

          SIMM CONFIGURATION (CONT)

      Size          Bank 0          Bank 1

      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

     512KB       (1) 64K x 64

                       CPU SPEED SELECTION (CX 6X86)

   CPU speed    Clock speed      Multiplier         J101         J108

    120MHz         50MHz             2x           1 & 4, 2 &     1 & 4
                                                  5, 3 & 6

    150MHz         60MHz             2x             1 & 4        1 & 4

    166MHz         66MHz             2x             Open         1 & 4

  Note: Pins designated should be in the closed position.

                      CPU SPEED SELECTION (IBM 6X86)

   CPU speed    Clock speed      Multiplier         J101         J108

    120MHz         50MHz             2x           1 & 4, 2 &     1 & 4
                                                  5, 3 & 6

    150MHz         60MHz             2x             1 & 4        1 & 4

    166MHz         66MHz             2x             Open         1 & 4

  Note: Pins designated should be in the closed position.

                      CPU SPEED SELECTION (CX 6X86L)

   CPU speed    Clock speed     Multiplier       J101           J108

    166MHz         66MHz            2x           Open           1 & 4

  Note: Pins designated should be in the closed position.

                     CPU SPEED SELECTION (IBM 6X86L)

   CPU speed    Clock speed     Multiplier       J101           J108

    166MHz         66MHz            2x           Open           1 & 4

  Note: Pins designated should be in the closed position.

                      CPU SPEED SELECTION (CX 6X86MX)

   CPU speed      Clock speed     Multiplier        J101         J108

     166MHz          60MHz           2.5x          1 & 4       1 & 4, 2 &
                                                                   5

     200MHz          66MHz           2.5x           Open       1 & 4, 2 &
                                                                   5

     233MHz          66MHz            3x            Open         2 & 5

     266MHz          66MHz           3.5x           Open         Open

  Note: Pins designated should be in the closed position.

                     CPU SPEED SELECTION (IBM 6X86MX)

   CPU speed      Clock speed     Multiplier        J101         J108

     200MHz          66MHz           2.5x           Open       1 & 4, 2 &
                                                                   5

     233MHz          66MHz            3x            Open         2 & 5

     266MHz          66MHz           3.5x           Open         Open

  Note: Pins designated should be in the closed position.

                       CPU SPEED SELECTION (IDT C6)

   CPU speed      Clock speed     Multiplier       J101          J108

     150MHz          60MHz           2.5x          1 & 4       1 & 4, 2 &
                                                                   5

     180MHz          66MHz            3x           Open          2 & 5

     200MHz          66MHz            3x           Open          2 & 5

  Note: Pins designated should be in the closed position.

                        CPU SPEED SELECTION (AM K5)

   CPU speed    Clock speed      Multiplier         J101         J108

     75MHz         50MHz            1.5x          1 & 4, 2 &     Open
                                                  5, 3 & 6

     90MHz         60MHz            1.5x            1 & 4        Open

    100MHz         66MHz            1.5x            Open         Open

    120MHz         60MHz            1.5x            1 & 4        Open

    133MHz         66MHz            1.5x            Open         Open

    166MHz         66MHz            2.5x            Open       1 & 4, 2 &
                                                                   5

  Note: Pins designated should be in the closed position.

                        CPU SPEED SELECTION (AM K6)

   CPU speed      Clock speed     Multiplier        J101         J108

     166MHz          66MHz           2.5x           Open       1 & 4, 2 &
                                                                   5

     200MHz          66MHz            3x            Open         2 & 5

     233MHz          66MHz           3.5x           Open         Open

     266MHz          66MHz            4x            Open       1 & 4, 3 &
                                                                   6

  Note: Pins designated should be in the closed position.

                        CPU SPEED SELECTION (INTEL)

   CPU speed    Clock speed      Multiplier         J101         J108

     75MHz         50MHz            1.5x          1 & 4, 2 &     Open
                                                  5, 3 & 6

     90MHz         60MHz            1.5x            1 & 4        Open

    100MHz         66MHz            1.5x            Open         Open

    120MHz         60MHz             2x             1 & 4        1 & 4

    133MHz         66MHz             2x             Open         1 & 4

    150MHz         60MHz            2.5x            1 & 4      1 & 4, 2 &
                                                                   5

    166MHz         66MHz            2.5x            Open       1 & 4, 2 &
                                                                   5

    200MHz         66MHz             3x             Open         2 & 5

  Note: Pins designated should be in the closed position.

                      CPU SPEED SELECTION (INTEL MMX)

   CPU speed      Clock speed     Multiplier        J101         J108

     166MHz          66MHz           2.5x           Open       1 & 4, 2 &
                                                                   5

     200MHz          66MHz            3x            Open         2 & 5

     233MHz          66MHz           3.5x           Open         Open

  Note: Pins designated should be in the closed position.

                      CPU VOLTAGE SELECTION (SINGLE)

            Voltage                                J104

              Auto                Pins 2 & 3, 5 & 6, 8 & 9, 11 & 12, 14 &
                                            15, 17 & 18 closed

              3.1v                 Pins 7 & 8, 13 & 14, 16 & 17 closed

             3.33v                 Pins 7 & 8, 10 & 11, 16 & 17 closed

              3.4v                 Pins 7 & 8, 10 & 11, 13 & 14 closed

             3.52v                 Pins 7 & 8, 10 & 11, 13 & 14, 16 & 17
                                                  closed

                       CPU VOLTAGE SELECTION (DUAL)

         Voltage                V core                    J104

          3.3v                   2.0v                     Open

          3.3v                   2.1v             Pins 16 & 17 closed

          3.3v                   2.2v             Pins 13 & 14 closed

          3.3v                   2.3v             Pins 13 & 14, 16 & 17
                                                         closed

          3.3v                   2.4v             Pins 10 & 11 closed

          3.3v                   2.5v             Pins 10 & 11, 16 & 17
                                                         closed

          3.3v                   2.6v             Pins 10 & 11, 13 & 14
                                                         closed

          3.3v                   2.7v           Pins 10 & 11, 13 & 14, 16
                                                      & 17 closed

          3.3v                   2.8v              Pins 7 & 8 closed

          3.3v                   2.9v          Pins 7 & 8, 16 & 17 closed

          3.3v                   3.0v          Pins 7 & 8, 13 & 14 closed

          3.3v                   3.2v          Pins 7 & 8, 10 & 11 closed

