
ACER, INC.

AP53 (Rev. 3.0)

Processor           Pentium/Pentium MMX/AMK5/AMK6/CX 6x86
Processor Speed     75/90/100/120/133/150/166/200/233MHz
Chip Set            Intel
Video Chip Set      None
Maximum Onboard     512MB
Memory
Maximum Video       None
Memory
Cache               256/512KB
BIOS                AMI
Dimensions          250mm 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, USB connector, IR connector, serial
                    ports (2)
NPU Options         None

[Image]

                                CONNECTIONS

  Purpose               Location     Purpose                 Location

  PS/2 mouse              CN4        IR connector              CN14
  interface

  USB connector           CN5        CPU fan connector         CN15

  Serial port 2           CN6        Keylock              CN16 Pins 1&2

  Serial port 1           CN7        Power LED            CN16 Pins 3-5

  Floppy drive            CN8        Speaker              CN16 Pins 7-10
  interface

  Parallel port           CN9        Green PC LED        CN16 Pins 12&13

  IDE interface 1         CN10       Suspend switch      CN16 Pins 15-17

  IDE interface 2         CN11       Reset switch        CN16 Pins 19&20

  IDE LED connector       CN12       32-bit PCI slots         PCI1-4

                        USER CONFIGURABLE SETTINGS

                Function                     Label           Position

     PS/2 mouse IRQ12 enabled                JP4             Closed

      PS/2 mouse IRQ12 disabled               JP4              Open

     CMOS memory normal operation            JP5           Pins 1 & 2
                                                              closed

      CMOS memory clear                       JP5           Pins 2 & 3
                                                              closed

     On board I/O controller enabled         JP8           Pins 1 & 2
                                                              closed

      On board I/O controller disabled        JP8           Pins 2 & 3
                                                              closed

     I/O voltage set at 3.43V                JP12          Pins 1 & 2
                                                              closed

      I/O Voltage set at 3.52V                JP12          Pins 3 & 4
                                                              closed

      Factory configured - do not            JP1301         Pins 2 & 3
      alter                                                   closed

      Factory configured - do not            JP1302         Pins 2 & 3
      alter                                                   closed

                DRAM CONFIGURATION

      Size            Bank 0           Bank 1

       4MB        (2) 512K x 36         None

       8MB         (2) 1M x 36          None

       8MB        (2) 512K x 36    (2) 512K x 36

      12MB        (2) 512K x 36     (2) 1M x 36

      16MB         (2) 2M x 36          None

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

      20MB        (2) 512K x 36     (2) 2M x 36

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

      32MB         (2) 4M x 36          None

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

      36MB        (2) 512K x 36     (2) 4M x 36

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

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

      64MB         (2) 8M x 36          None

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

      68MB        (2) 512K x 36     (2) 8M x 36

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

          DRAM CONFIGURATION (CONT.)

      Size          Bank 0          Bank 1

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

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

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

     128MB        (2) 16M x 36       None

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

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

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

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

     256MB        (2) 32M x 36       None

     264MB        (2) 1M x 36    (2) 32M x 36

     272MB        (2) 2M x 36    (2) 32M x 36

     288MB        (2) 4M x 36    (2) 32M x 36

     320MB        (2) 8M x 36    (2) 32M x 36

     384MB        (2) 16M x 36   (2) 32M x 36

     512MB        (2) 32M x 36   (2) 32M x 36

      CACHE CONFIGURATION

      Size          Bank 0

     256KB       (2) 32K x 32

     512KB       (2) 64K x 32

                        CPU SPEED SELECTION (INTEL)

     Speed      Clock Speed    Multiplier        JP10            JP1

     75MHz         50MHz          1.5x       1 & 2, 3 & 4    1 & 2, 3 & 4

     90MHz         60MHz          1.5x       1 & 2, 3 & 4       1 & 2

    100MHz         66MHz          1.5x           1 & 2          3 & 4

    120MHz         60MHz           2x        3 & 4, 5 & 6       1 & 2

    133MHz         66MHz           2x        3 & 4, 5 & 6       3 & 4

    150MHz        60 MHz          2.5x       5 & 6, 7 & 8       1 & 2

    166MHz         66MHz          2.5x       5 & 6, 7 & 8       3 & 4

    200MHz         66MHz           3x        1 & 2, 7 & 8       3 & 4

  Note : Pins designated should be in the closed position

                      CPU SPEED SELECTION (INTEL MMX)

     Speed      Clock Speed    Multiplier        JP10            JP1

    150MHz         60MHz          2.5x       5 & 6, 7 & 8       1 & 2

    166MHz         66MHz          2.5x       5 & 6, 7 & 8       3 & 4

    200MHz         66MHz           3x        1 & 2, 7 & 8       3 & 4

    233MHz         66MHz          3.5x       1 & 2, 3 & 4       3 & 4

  Note : Pins designated should be in the closed position

                       CPU SPEED SELECTION (CX 6X86)

    Speed          Clock      Multiplier        JP10            JP1
                  Speed

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

    133MHz        55MHz           2x         3 & 4, 5 & 6     All open

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

    166MHz        66MHz           2x         3 & 4, 5 & 6      3 & 4

  Note : Pins designated should be in the closed position

                        CPU SPEED SELECTION (AMK5)

     Speed      Clock Speed    Multiplier        JP10            JP1

     75MHz         50MHz          1.5x       1 & 2, 3 & 4    1 & 2, 3 & 4

     90MHz         60MHz          1.5x       1 & 2, 3 & 4       1 & 2

    100MHz         66MHz          1.5x       1 & 2, 3 & 4       3 & 4

    120MHz         60MHz          1.5x       1 & 2, 3 & 4       1 & 2

    133MHz         66MHz          1.5x       1 & 2, 3 & 4       3 & 4

    166MHz         66MHz         1.75x       5 & 6, 7 & 8       3 & 4

  Note : Pins designated should be in the closed position

                        CPU SPEED SELECTION (AMK6)

     Speed      Clock Speed    Multiplier        JP10            JP1

    166MHz         66MHz          2.5x       5 & 5, 7 & 8       3 & 4

    200MHz         66MHz           3x        1 & 2, 7 & 8       3 & 4

    233MHz         66MHz          3.5x       1 & 2, 3 & 4       3 & 4

  Note : Pins designated should be in the closed position

        CPU VOLTAGE SELECTION (SINGLE)

        Voltage                 JP11

         2.5V            Pins 5 & 6 closed

         2.8V            Pins 9 & 10 closed

         2.9V           Pins 11 & 12 closed

         3.2V            Pins 7 & 8 closed

         3.45V           Pins 1 & 2 closed

         3.52V           Pins 3 & 4 closed

                       CPU VOLTAGE SELECTION (DUAL)

  Voltage       JP11            JP12            JP3             JP13

   2.8V        9 & 10          1 & 2          All open      1 & 2, 3 & 4

   2.9V        11 & 12         1 & 2          All open      1 & 2, 3 & 4

   3.2V         7 & 8          1 & 2          All open      1 & 2, 3 & 4

   3.43V        1 & 2          1 & 2        1 & 2, 3 & 4      All open

   3.52V        3 & 4          1 & 2        1 & 2, 3 & 4      All open

  Note : Pins designated should be in the closed position

