Internal Peripheral Connectors; Fdd Connector - IBM 3301690 User Manual

3301690 CPU Card
ATXCTL1 ATX connector
CPU_FAN1 CPU Fan Power
3.2

Internal Peripheral Connectors

Internal peripheral connectors are found on the CPU card and are only accessible when
the CPU board is outside of the chassis. This section has complete descriptions of all the
internal, peripheral connectors on the 3301690 CPU board.

3.2.1 FDD Connector

CN Label:
CN Type:
CN Location:
CN Pinouts:
The 3301690 is shipped with a 34-pin daisy-chain drive connector cable. This cable can
be connected to the FDD connector.
PIN DESCRIPTION
1 GND
3 GND
5 N/C
7 GND
9 GND
11 GND
13 GND
15 GND
17 GND
19 GND
32
FDD1
2x17 pin header
See Figure 3-2
See Table 3-1
PIN DESCRIPTION
2 REDUCE WRITE
4 N/C
6 N/C
8 INDEX#
10 MOTOR ENABLE A#
12 DRIVE SELECT B#
14 DRIVE SELECT A#
16 MOTOR ENABLE B#
18 DIRECTION#
20 STEP#
status LEDs
3-pin header connects a power source from a
backplane with an ATX Connector.
4-pin header CPU fan power cable connector