IBM 1 Series - Page 80

4952B/
Voltage/ 4953B,D/
ground/ 1/O 4955 Corresponding I/O cable pin
special pin socket A-socket 1 2 3 4
B06 —12 V Gnd Gnd(B06)
Bil +12 V Gnd Gnd(B11)
D03 +5 V +5 V NC(D03)
D08 Gnd Gnd Gnd(D08)
G06 -3 Vv Gnd Gnd(B06)
Gil +8.5 V Gnd Gnd(B11)
JO3 +5 V +5 V NC(D03)
JO8 Gnd Gnd Gnd(D08)
M06 Res Gnd Gnd(B06)
M11 Poll
propagate Gnd Gnd(B11)
P03 +5 V +5 V NC(D03)
P08 Gnd Gnd Gnd(D08)
S06 Res Gnd Gnd(B06)
S11 Res Gnd Gnd(B11)
U03 +5 V +5 V NC(D03)
U08 Gnd Gnd Gnd(D08)
Key:
Gnd = ground
NC = no connections at these pins.
Res = pins reserved for special system functions and features and
are not to be connected to an I/O attachment.
Figure 2-29. I/O channel pin and cable assignments—special lines for A-socket and I/O
cable
Processor I/O Channel 2-69