Data Signals:pcb Edge-Connector J2 - Seagate ST212 Product Manual

2.2 DATA SIGNALS: PCB EDGE-CONNECTOR J2
Do not touch the PCB edge.connectors, board components or the printed cir-
cuit cable without observing static-discharge precautions. Handle the drive by
the frame ooly.
Read/Write data signaIs are received and transmitted over a 20-pin PCB edge-
connector, J2. Figure 5 indicates connector dimensions and Table 2lists the pin
assignments. A host/drive interconnection is illustrated in Figure 6.
With the drive resting on a padded surface, oriented with the Main Control PCB
up and the edge-connectors toward you, J2 is to your right and JI is on the left.
Refer to Figure 7.
J2 pins are numbered 1 through 20 with the even pins located on the compo-
nent side of the PCB. A key slot is provided between pins 4 and 6. Pin 2 is la-
beled. The recommended mating connector for J2 is AMP ribbon connector,
part number 88373-6.
FIGURE 5:
J2 Connector
Dimensions
1--.
050
1
20
ooo~ ~
1
1
.450
2 4
1
.087
~
Fr------I
.400
LL""I+I-.... ". . . . - -----. . . . . . . . . . .
~
.150
1
1
1-
1
9 EO. SP.
at
.100
=
.900---1 __
1
.-------1.075-------I~
BOARD THICKNESS:
0.062 ± 0.007
TOLERANCE:
O.XXX ± 0.005
(unless otherwise noted)
8 ST212 PRODUCT MANUAL/Rev. B