
PMC-Sierra, Inc.
PM73488 QSE
L
PMC-980616
Issue 3
5 Gbit/s ATMSwitch Fabric Element
Released
Datasheet
93
44-47
SE_INPUT_PORT_FAIL_PRESENT
R
Indicates absence of special pattern on SOC or invalid
cell present code on data lines or invalid idle cell code
on data lines during the last cell time.
48-4B
SE_INPUT_PORT_FAIL_LATCH
R
Indicates if an SE_INPUT_PORT_FAIL has occurred
since the last read.
4C-4F
BP_ACK_FAIL_PRESENT
R
Indicates absence of special coding on BP_ACK_IN
line on output ports during the last cell time.
50-53
BP_ACK_FAIL_LATCH
R
Indicates if a BP_ACK_FAIL has occurred since the
last read.
54-57
BP_REMOTE_FAIL_PRESENT
R
Indicates absence of back pressure on BP_ACK_IN
line on output ports during the last cell time.
58-5B
BP_REMOTE_FAIL_LATCH
R
Indicates if a BP_REMOTE_FAIL condition has
occurred since the last read.
5C-7F
RESERVED
—
Switch Control/Status Registers
80
CONTROL_REGISTER
R/Wt
Various switch parameters.
81
INTERRUPT_STATUS_REGISTER
R
Identifies if an interrupt condition is present.
82
MULTICAST_AGGREGATE_OUTPU
T_MODE
R/Wt
Aggregate mode for multicast cells.
83
UNICAST_AGGREGATE_OUTPUT_
MODE
R/Wt
Aggregate mode for unicast cells.
84
SWITCH_FABRIC_ROW
R/Wt
Row number in switch fabric.
85
SWITCH_FABRIC_COLUMN
R/Wt
Column number in switch fabric.
86
CELL_START_OFFSET
R/Wt
Offset between internal and external CELL_START
signals.
87
BP_CONTROL_REGISTER
R/Wt
Control backpressure functionality.
88
ACK_PAYLOAD
R/W
Payload for ACK packet when ACK needs to be
generated by the QSE for parity fail and regular
congestion.
89
GANG_DEAD_ACK
R/W
Payload for ACK packet when ACK needs to be
generated by the QSE because the entire gang is dead.
8A
EXTENDED_SWITCH_MODE
Rt
Extended switch control register.
8B-EF
RESERVED
—
Table 31. Microprocessor Ports Summary (Continued)
Address
(in Hex)
Name
Read or Write
Description