CD32 Expansion connector

Update & Notes

The original notes on the CD32 epxnasion port were released in 1995, they left out a few pins, which I have added. there is built in support (I think) for a 68030 processor on this expnasion connector, previously these signals were marked as no connect (n/c).

The mating connector is a 182 way MCA connector which is possible to obtain.
 

#####################################################################
##                  CD32 Expansion port info. 1994-07-05 by Anders Stenkvist                    ##
##      Updated 19th April 2002 by Ian Stedman                                                             ##                                                                      
#####################################################################

 2                         84___86                        182
 |--- TOP
 ////////////////////////////   ////////////////////////////    v
/==========================/   /==========================/
^                          ^   ^                          ^     ^
1                         83   85                        181    |___ BOT

Note DGND = digital GND
     VCC  = +5V
     A * after a signal denotes active low.

Pin  #   Name           Comment
===========================================================================
Pin  1   A31            Probably not connected since 68EC020
 |       |              |
Pin  8   A24  Probably not connected since 68EC020
Pin  9   DGND
Pin 10   VCC
Pin 11   A23            Address bus
 |       |              |
Pin 18   A16            |
Pin 19   DGND
Pin 20   VCC
Pin 21   A15            |
 |       |              |
Pin 28   A8             |
Pin 29   DGND
Pin 30   VCC
Pin 31   A7             |
 |       |              |
Pin 38   A0             Address bus
Pin 39   DGND
Pin 40   VCC
Pin 41   D31            Data bus
 |       |              |
Pin 48   D24            |
Pin 49   DGND
Pin 50   VCC
Pin 51   D23            |
 |       |              |
Pin 58   D16            |
Pin 59   DGND
Pin 60   VCC
Pin 61   D15            |
 |       |              |
Pin 68   D8             |
Pin 69   DGND
Pin 70   VCC
Pin 71   D7             |
 |       |              |
Pin 78   D0             Data bus
Pin 79   DGND

Pin 80   VCC
Pin 81   IPL2*          Interrupt Priority Level 2 (68020 signal)
Pin 82   IPL1*          |
Pin 83   IPL0*          Interrupt Priority Level 0
Pin 84   IPEND  Interrupt pending
Pin 85   RST            Request to send (RS232 port)
Pin 86   HALT*          Processor Halt
Pin 87   ECS*           Not implemented on 68EC020 (68030 signal)
Pin 88   OCS*           Not implemented on 68EC020 (68030 signal)
Pin 89   SIZE1          Indicates number of bytes remaining to transfer
Pin 90   SIZE0          Indicates number of bytes remaining to transfer
Pin 91   AS*            Adress strobe
Pin 92   DS*            Data strobe
Pin 93   R/W*           Read/Write
Pin 94   BERR*          Bus Error
Pin 95   STERM*  68030 STERM (reserved)
Pin 96   AVEC*          Autovector request during interrupt acknowledge
Pin 97   DSACK1*        Data transfer and size acknowledge
Pin 98   DSACK0*        Data transfer and size acknowledge
Pin 99   CPUCLK_A CPU Clock 14 MHz
Pin100   E              Peripheral Enable Clock
Pin101   DGND 
Pin102   VCC
Pin103   FC2            Function codes
Pin104   FC1            Function codes
Pin105   FC0            Function codes
Pin106   RMC*  Read Modify cycle
Pin107   CIIN*  68030 CIIN (Reserved)
Pin108   CIOUT*  68030 CIOUT (Reserved)
Pin109   CBREQ*  68030 CBREQ (reserved)
Pin110   CBACK*  68030 CBACK (Reserved)
Pin111   CPU_BR*        CPU bus request
Pin112   EXP_BG*        Expansion bus grant
Pin113   CPU_BG*        CPU bus grant
Pin114   EXP_BR*        Expansion bus request
Pin115   CPU_BGACK* CPU bus grant Acknowledge
Pin116  EXP_BGACK* Expansion bus acknowledge
Pin117   PUNT*  Back off signal to console
Pin118   RESET*         General  RESET
Pin119   INT2*          Generate a level 2 interrupt
Pin120   INT6*          Generate a level 6 interrupt
Pin121   KB_CLOCK*      Keybord clock
Pin122   KB_DATA*       Keybord data
Pin123   FIRE0*         Fire buttons
Pin124   FIRE1*         |
Pin125   LED*           Power On Led
Pin126   ACTIVE*        CD Drive active led
Pin127   RXD*           Serial data in
Pin128   TXD*           Serial data out
Pin129   DKRD*          Disk Read Data
Pin130   DKWD*          Disk Write Data
Pin131   SYSTEM         (Reserved)
Pin132   DKWE*          Disk Write Enable
Pin133   CONFIG_OUT*    Zorro config signal
Pin134   CONFIG_IN* Zorro config signal
Pin135   DGND 
Pin136   +12V
Pin137   DGND
Pin138   +12
Pin139   17MHZ         CD-Drive/CD-DAC clock
Pin140   EXT_AUDIO*    External audio enable
Pin141   DA_DATA       CD-Data
Pin142   MUTE*         Audio mute signal
Pin143   DA_LRCLK      CD-Data Left Right clock
Pin144   DA_BCLK       CD-Data bit clock
Pin145   DGND
Pin146   VCC
Pin147   DR            Digital Red
Pin148   DG            Digital Green
Pin149   DB            Digital Blue
Pin150   DI            Digital Intensity
Pin151   PIXELSW_EXT*  External genlock pixel switch (Video)
Pin152   PIXELSW*      Genlock Pixel Switch (Video)
Pin153   BLANK*        Video blanking signal
Pin154   PIXELCLK      Pixelclock for manipulating RBG data
Pin155   DGND
Pin156   VCC
Pin157   CSYNC*        Composite sync
Pin158   CCK_B         Color clock ?????
Pin159   HSYNC*        Horizontal sync
Pin160   VSYNC*        Vertical sync
Pin161   VGND          Video ground
Pin162   VGND          Video ground
Pin163   AR_EXT        External Analog Red
Pin164   AR            Analog Red    
Pin165   AG_EXT        External Analog Green
Pin166   AG            Analog Green
Pin167   AB_EXT        External Analog Blue
Pin168   AB            Analog Blue
Pin169   VGND          Video ground
Pin170   VGND          Video ground
Pin171   NTSC*        NTSC
Pin172   XCLKEN*       Enable External video clock (Genlock)
Pin173   XCLK          External video clock (Genlock)
Pin174   EXT_VIDEO*    Disable internal video interfaces
Pin175   DGND
Pin176   VCC
Pin177   AGND
Pin178   +12
Pin179   LEFT_EXT      External Left sound
Pin180   LEFT          Left sound
Pin181   RIGHT_EXT     External Right sound
Pin182   RIGHT         Right sound


NOTE: Signals with a _EXT suffix are intended for the CD32 FMV module.
 

Updated 08 July 2017