IBM3229P2035
IBM Packet Routing Switch Serial Interface Converter
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Table 28: Miscellaneous External Signals
Input/
Output
Name
POR
Level
LVTTL
LVTTL
Description
Notes
1
Input
Creates a hardware reset of the converter (flush LSSD).
Slot_IDN_4...
Slot_IDN_0
Hardware Slot ID. These bits are directly mapped to the SlotID Con-
trol Register @A0 bits 20-16.
Input
1
Adapter Port Available (APA) signal sent to the switch board X. This
bit is directly mapped, with inversion, from the X Adapter Port Avail-
able Register @08 bit 19
APAN_X
APAN_Y
Output
LVTTL
LVTTL
Adapter Port Available (APA) signal sent to the switch board Y. This
bit is directly mapped from the Y Adapter Port Available Register
@28 bit 19
Output
Fabric Port Available (FPA). This bit is directly mapped to the XFPA
Control Register @88 bit 2.
FPAN_X
FPAN_Y
Input
Input
LVTTL
LVTTL
1
1
Fabric Port Available (FPA). This bit is directly mapped to the YFPA
Control Register @88 bit 6.
Fabric X in service selects which plane/clock is currently in use. This
bit is directly mapped, with inversion, to the XInService Control Reg-
ister @88 bit 0.
SWITCH_X_IN
SERVICE
Input
Input
Input
Input
LVTTL
LVTTL
LVTTL
LVTTL
1
1
1
1
Fabric Y in service selects which plane/clock is currently in use. This
bit is directly mapped, with inversion, to the YInService Control Reg-
ister @88 bit 4.
SWITCH_Y_IN
SERVICE
Fabric X detects that the switch board has been inserted into the
backplane and that a switch clock should be present. This bit is
directly mapped to the switch present Control Register @88 bit 3.
SWITCH_X_PR
ESENT
Fabric Y detects when a switch board is inserted into the backplane
and that a switch clock should be present. This bit is directly mapped
to the switch present Control Register @88 bit 7.
SWITCH_Y_PR
ESENT
1. An internal pull-up resistor forces the inactive state.
Figure 36: Switch Present Detection
vcc
vcc
10 K
14 K
GND
1 K
Switch Present
RCV
IBM Packet Routing Switch
Serial Interface Converter
Switch Board
Backplane
I/O Definition and Package Pin Assignment
Page 118 of 154
prssi.02.fm
March 1, 2001
IBM [ IBM ]
