![](http://datasheet.mmic.net.cn/330000/PM73487-PI_datasheet_16444394/PM73487-PI_111.png)
PM73487 QRT
PMC-Sierra, Inc.
PMC-980618
Issue 3
622 Mbps ATMTraffic Management Device
Released
Datasheet
99
84
h
-9C
h
21
h
-27
h
Not used
R
Driven with a 0. Mask on reads to maintain compatibil-
ity with future versions.
A0
h
28
h
RX_QUEUE_ENGINE_TEST
R/W
Receive queue engine test/debug register.
A4
h
29
h
TX_QUEUE_ENGINE_TEST
R/W
Transmit queue engine test/debug register.
A8
h
2A
h
QUEUE_ENGINE_CONDI
TION_PRES_BITS
R
Current status of queue engine failure detection bits.
AC
h
2B
h
QUEUE_ENGINE_CONDITI
ON_LATCH_BITS
R/W
Latched version of queue engine failure detection bits.
B0
h
2C
h
QUEUE_ENGINE_INT_MAS
K
R/W
Interrupt mask for the queue engine failure detection
bits.
B4
h
-FC
h
2D
h
-3F
h
Not used
R
Driven with a 0. Mask on reads to maintain compatibil-
ity with future versions.
100
h
-
7BFFC
h
40
h
-
1EFFFF
h
Not used
Driven with a 0. Mask on reads to maintain compatibil-
ity with future versions.
7C0000
h
1F0000
h
RX_DIR_CONFIG
R/W
Sets the congestion threshold for the receive direction.
7C0004
h
1F0001
h
RX_DIR_STATE
R/W
Indicates the current queue depth for this SC.
7C0008
h
-
7C001F
h
1F0002
h
-
1F0007
h
Reserved
R
Do not initialize.
7C0020
h
1F0008
h
TX_DIR_CONFIG
R/W
Sets the congestion threshold for the transmit direction.
7C0024
h
Or
7C00A4
h
1F0009
h
Or
1F0029
h
TX_DIR_STATE
R/W
Indicates the current state of the transmit direction.
7C0028
h
-
7C003C
h
1F000A
h
-
1F000F
h
Reserved
R
Do not initialize.
7C0040
h
1F0010
h
RX_SENT_CELLS
R
Twenty-four-bit counter of cells sent in the receive
direction.
7C0044
h
1F0011
h
RX_DROPPED_CELLS
R
Twenty-four-bit counter of cells dropped in the receive
direction.
7C0048
h
1F0012
h
TX_SENT_CELLS
R
Twenty-four-bit counter of cells sent in the transmit
direction.
7C004C
h
1F0013
h
TX_DROPPED_CELLS
R
Twenty-four-bit counter of cells dropped in the transmit
direction.
7C0050
h
1F0014
h
RX_LOWER16_SCG_CONFI
G
R/W
Configuration of the Rx Lower 16 Service Class Group.
7C0054
h
1F0015
h
RX_LOWER16_SCG_STATE
R/W
State of the Rx Lower 16 Service Class Group.
7C0058
h
1F0016
h
RX_LOWER32_SCG_CONFI
G
R/W
Configuration of the Rx Lower 32 Service Class Group.
7C005C
h
1F0017
h
RX_LOWER32_SCG_STATE
R/W
State of the Rx Lower 32 Service Class Group.
Table 23. Microprocessor Ports Summary (Continued)
Byte
Address
Long
Address
Name
Read or
Write
Description