Specifications

CHAPTER 3
I/O Specifications
48 DIMM Connector
lists the pin assignments and signal descriptions for the four-pin audio connectors, JST
part number B-4B-PH-K. The connector at location J5 is for audio input, and the
connector at J6 for audio output.
DIMM Connector 3
If you want to increase memory capacity, you can plug a DIMM into the DIMM slot
provided on the 12" card, or remove the 8 MB DIMM from the 7” card and replace it with
a DIMM of higher capacity. See “Memory Capabilities” on page 5 for further information
about DIMM configurations.
The DIMM connector is a 160-pin connector, Berg part number 95566-11102. Table 3-8
lists the pin assignments for this connector. The pins that are connected to ground, the +5
V power supply, and pins that are not connected are listed at the end of the table.
Table 3-7 Audio connector pin assignments
Pin number Signal
Connector
location Description
1 n.c. J5 Not connected
2 CD INR J5 CD input right channel
3 CD GND J5 Ground
4 CD INL J5 CD input left channel
1 n.c. J6 Not connected
2 SND OUTR J6 Sound output right channel
3 SND GND J6 Ground
4 SND OUTL J6 Sound output left channel
Table 3-8 DIMM connector pin assignments
Pin number 12” card 7” card
Signal Description Signal Description
2 MD(0) Data bit 0 D(0) Data bit 0
3 MD(1) Data bit 1 D(1) Data bit 1
4 MD(2) Data bit 2 D(2) Data bit 2
5 MD(3) Data bit 3 D(3) Data bit 3
7 MD(4) Data bit 4 D(4) Data bit 4