參數(shù)資料
型號: IBM3209K4060
英文描述: Telecom Switching Circuit
中文描述: 電信開關電路
文件頁數(shù): 74/131頁
文件大?。?/td> 1679K
代理商: IBM3209K4060
PRS28.4G
IBM Packet Routing Switch
Internal Registers
Page 74 of 131
prs28.03.fm
August 31, 2000
5.2.18 Output Queue Status Registers 0-3
These four registers provide the output queue empty status, as well as the priority full status. Each register
provides the status bits for four output queues, as indicated in the OCM address listing below.
If an output queue is empty while some of its priorities are declared full (this is the case of a threshold being
programmed at 0), the status register reports that the queue is indeed empty. The full information is only
available if the queue is non-empty.
Reset Value
‘1111‘b
OCM Address
Output Queue Status Register 0:
Output Queue Status Register 1:
Output Queue Status Register 2:
Output Queue Status Register 3:
10‘x’
11‘x’
12‘x’
13‘x’
Access Type
Read Only
Bits
Description
0
Reserved
.
1 - 3
Status for output queue 4*N.
Encoded as follows:
000:
none (not empty, not full for any priority)
001:
empty
100:
priority 3 full
101:
priority 2 and 3 full
110:
priority 1, 2 and 3 full
111:
priority 0, 1, 2 and 3 full
others: reserved
4
Reserved
.
5 - 7
Status for output queue 4*N + 1
. See bits 1-3 for coding.
8
Reserved
.
9 - 11
Status for output queue 4*N + 2
. See bits 1-3 for coding.
12
Reserved
.
13 - 15
Status for output queue 4*N + 3
. See bits 1-3 for coding.
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