
A-TREND TECHNOLOGY CORPORATION

ATC-5050

Device Type          Mainboard
Processor            CX 6X86L/CX 6X86MX/AM K5/AM K6/Pentium/Pentium MMX
Processor Speed      120/133/150/166/180/200/233MHz
Chip Set             Intel 430TX
Maximum Onboard      256MB (EDO & SDRAM supported)
Memory
Cache                512KB
BIOS                 Award
Dimensions           280mm 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, ATX power connector

[Image]

                                CONNECTIONS

  Purpose               Location       Purpose                Location

  ATX power                ATX         Serial port 2            CN2
  connector

  Reset switch        C1/pins 1 & 2    Parallel port            CN3

  Green PC            C1/pins 4 & 5    Floppy drive             CN4
  connector                            interface

  Turbo LED           C1/pins 7 & 8    IDE interface 2          CN5

  IDE interface LED    C1/pins 10 &    IDE interface 1          CN6
                           11

  Soft off power       C1/pins 12 &    PS/2 mouse               CN7
  supply                   24          interface

  Speaker              C1/pins 13     IR connector             IR1
                           16

  Power LED &          C1/pins 18 &    32-bit PCI slots      PC1  PC4
  keylock                  20

  Chassis fan power        C2          USB connector            USB

  Serial port 1            CN1

                        USER CONFIGURABLE SETTINGS

               Function                    Label           Position

     CMOS memory normal operation          JP3        Pins 2 & 3 closed

      CMOS memory clear                     JP3        Pins 1 & 2 closed

      Power supply select AT                JP5        Pins 2 & 3 closed

      Power supply select ATX               JP5        Pins 1 & 2 closed

     Factory configured  do not          SW1/6         Unidentified
      alter

             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

          SIMM CONFIGURATION (CONT)

      Size          Bank 0          Bank 1

     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       (2) 64K x 32

                      CPU SPEED SELECTION (CX 6X86L)

    CPU     Clock    Multiplier   SW2/1    SW2/2   SW2/3   SW2/4   SW2/5
  speed     speed

  150MHz    60MHz        2x        On       On     Off      On      Off

  166MHz    66MHz        2x        On       On      On      On      Off

  200MHz    75MHz        2x        On      Off      On      On      Off

                      CPU SPEED SELECTION (CX 6X86MX)

    CPU     Clock    Multiplier   SW2/1    SW2/2   SW2/3   SW2/4   SW2/5
  speed     speed

  150MHz    60MHz        2x        On       On     Off      On      Off

  166MHz    66MHz        2x        On       On      On      On      Off

  166MHz    60MHz       2.5x       On       On     Off      On       On

  200MHz    66MHz       2.5x       On       On      On      On       On

  200MHz    75MHz        2x        On      Off      On      On      Off

                        CPU SPEED SELECTION (AM K5)

    CPU     Clock    Multiplier   SW2/1    SW2/2   SW2/3   SW2/4   SW2/5
  speed     speed

  90MHz     60MHz       1.5x       On       On     Off      Off     Off

  100MHz    66MHz       1.5x       On       On      On      Off     Off

  120MHz    60MHz       1.5x       On       On     Off      Off     Off

  133MHz    66MHz       1.5x       On       On      On      Off     Off

  166MHz    66MHz       2.5x       On       On      On      On       On

                        CPU SPEED SELECTION (AM K6)

    CPU     Clock    Multiplier   SW2/1    SW2/2   SW2/3   SW2/4   SW2/5
  speed     speed

  166MHz    66MHz       2.5x       On       On      On      On       On

  200MHz    66MHz        3x        On       On      On      Off      On

  233MHz    66MHz       3.5x       On       On      On      Off     Off

                        CPU SPEED SELECTION (INTEL)

    CPU     Clock    Multiplier   SW2/1    SW2/2   SW2/3   SW2/4   SW2/5
  speed     speed

  120MHz    60MHz        2x        On       On     Off      On      Off

  133MHz    66MHz        2x        On       On      On      On      Off

  150MHz    60MHz       2.5x       On       On     Off      On       On

  166MHz    66MHz       2.5x       On       On      On      On       On

  180MHz    60MHz        3x        On       On     Off      Off      On

  200MHz    66MHz        3x        On       On      On      Off      On

                      CPU SPEED SELECTION (INTEL MMX)

    CPU     Clock    Multiplier   SW2/1    SW2/2   SW2/3   SW2/4   SW2/5
  speed     speed

  166MHz    66MHz       2.5x       On       On      On      On       On

  200MHz    66MHz        3x        On       On      On      Off      On

  233MHz    66MHz       3.5x       On       On      On      Off     Off

                CPU VOLTAGE SELECTION

  Voltage    SW1/1      SW1/2      SW1/3      SW1/4

   2.8v        On        Off        Off        Off

   2.9v        On        Off        Off        On

   3.3v        On         On        Off        On

   3.5v        On         On        On         On

