
MITAC INTERNATIONAL COMPUTER

PH5400TX

Device Type          Mainboard
Processor            CX 6X86/CX 6X86L/AM K5/Pentium/Pentium MMX
Processor Speed      75/90/100/120/133/150/166/200MHz
Chip Set             Intel
Video Chip Set       None
Maximum Onboard      256MB (EDO & SDRAM supported)
Memory
Maximum Video Memory None
Cache                256/512KB
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
                     connector
NPU Options          None

[Image]

                                CONNECTIONS

  Purpose                    Location    Purpose                Location

  Parallel port                 J1       Green PC connector       J17

  Floppy drive interface        J2       Reset switch             J18

  Serial port 1                 J4       Speaker                  J19

  Serial port 2                 J6       IDE interface LED        J20

  PS/2 mouse interface/USB      J7       IR connector             J22
  connector

  IDE interface 2              J14       Power LED & keylock      J23

  IDE interface 1              J15       32-bit PCI slots       PC1  PC4

                        USER CONFIGURABLE SETTINGS

                Function                     Label           Position

     CMOS memory normal operation            JP5           Pins 1 & 2
                                                              closed

      CMOS memory clear                       JP5           Pins 2 & 3
                                                              closed

                  DIMM CONFIGURATION

       Size            Bank 0            Bank 1

       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 EDO & 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      JP4
   speed       speed

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

   133MHz      55MHz          2x         1 & 2   3 & 4     2 & 3   5 & 6

   150MHz      66MHz          2x         1 & 2   1 & 2     2 & 3   5 & 6

   166MHz      60MHz          2x         1 & 2    Open     2 & 3   5 & 6

  Note: Pins designated should be in the closed position.

                      CPU SPEED SELECTION (CX 6X86L)

  CPU speed    Clock      Multiplier     JP1      JP2      JP3      JP4
               speed

   166MHz      60MHz          2x        1 & 2     Open    2 & 3    5 & 6

  Note: Pins designated should be in the closed position.

                        CPU SPEED SELECTION (AM K5)

     CPU       Clock      Multiplier     JP1      JP2      JP3      JP4
   speed       speed

   120MHz      60MHz          2x         1 & 2   1 & 2      *        *

   133MHz      66MHz          2x         1 & 2    Open      *        *

   150MHz      60MHz         2.5x         1 &    1 & 2      *        *
                                         2, 3
                                         & 4

   166MHz      66MHz         2.5x         1 &     Open      *        *
                                         2, 3
                                         & 4

  Note: Pins designated should be in the closed position. * = See table
  below.

                      CPU SPEED SELECTION (INTEL STD)

    CPU        Clock     Multiplier      JP1      JP2      JP3      JP4
   speed      speed

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

   90MHz      60MHz         1.5x         Open    1 & 2     2 & 3   5 & 6

  100MHz      66MHz         1.5x         Open     Open     2 & 3   5 & 6

  120MHz      60MHz          2x         1 & 2    1 & 2     2 & 3   5 & 6

  133MHz      66MHz          2x         1 & 2     Open     2 & 3   5 & 6

  150MHz      60MHz         2.5x        1 & 2,   1 & 2     2 & 3   5 & 6
                                        3 & 4

  166MHz      66MHz         2.5x        1 & 2,    Open     2 & 3   5 & 6
                                        3 & 4

  200MHz      66MHz          3x         3 & 4     Open     2 & 3   5 & 6

                      CPU SPEED SELECTION (INTEL VRE)

    CPU        Clock     Multiplier      JP1      JP2      JP3      JP4
   speed      speed

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

   90MHz      60MHz         1.5x         Open    1 & 2     1 & 2   5 & 6

  100MHz      66MHz         1.5x         Open     Open     1 & 2   5 & 6

  120MHz      60MHz          2x         1 & 2    1 & 2     1 & 2   5 & 6

  133MHz      66MHz          2x         1 & 2     Open     1 & 2   5 & 6

  150MHz      60MHz         2.5x        1 & 2,   1 & 2     1 & 2   5 & 6
                                        3 & 4

  166MHz      66MHz         2.5x        1 & 2,    Open     1 & 2   5 & 6
                                        3 & 4

  200MHz      66MHz          3x         3 & 4     Open     1 & 2   5 & 6

                      CPU SPEED SELECTION (INTEL MMX)

     CPU       Clock      Multiplier     JP1      JP2      JP3      JP4
   speed       speed

   166MHz      66MHz         2.5x         1 &     Open     2 & 3   5 & 6
                                         2, 3
                                         & 4

   200MHz      66MHz          3x         3 & 4    Open     2 & 3   5 & 6

  Note: Pins designated should be in the closed position.

      CPU VOLTAGE SELECTION (AM K5 ONLY)

  Voltage code        JP3            JP4

       B             1 & 2          5 & 6

       C             2 & 3          5 & 6

       F             2 & 3          5 & 6

       H             2 & 3          7 & 8

       J             2 & 3          3 & 4

       K             2 & 3          1 & 2

