參數(shù)資料
型號: IBM3209K3114
廠商: IBM Microeletronics
英文描述: IBM Packet Routing Switch Serial Interface Converter(IBM封裝路線選擇開關串行接口轉換器)
中文描述: IBM的分組路由交換機串行接口轉換器(IBM的封裝路線選擇開關串行接口轉換器)
文件頁數(shù): 39/152頁
文件大?。?/td> 2390K
代理商: IBM3209K3114
IBM3209K3114
Advance
IBM Packet Routing Switch Serial Interface Converter
prssi.01
July 12, 2000
Functional Description
Page 29 of 142
3.6.4.2 Data Packets
The data packet format can be made of LUs of 16 to 20 bytes long depending on the configuration register.
Data Packet Format Switch 8x8 and 16x16
Data Packet Format Switch 32x32
3.6.5 IBM 28.4G Packet Routing Switch (switch) in band Output Queue Grant Information
Bytes BM1 and BM2 carry the output queue grant coming from the switch. This information is carried for all
16 output ports simultaneously for a given priority. Consecutive packets, either data or idle, carry a different
priority of the output queue grant bits, cycling from 0 to the highest priority value that is enabled. For instance,
when two priorities are enabled, it takes two packets to transmit the output queue grant information.
When a bit of this OQG field is set to
1
, data can be sent to the corresponding output queue. When set to
0
no data should be sent to that output queue. The switch sets (8-port mode) OQG1 to
FF
when operating in
internal speed expansion. If a yellow packet is detected when detection is enabled, an interruption is
reported. If detection is not enabled the yellow packet is considered an idle packet.
Master LU
Slave LU
Slave LU
Slave LU
PQ
D
D
D
OQG0
D
D
D
OQG1
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
Master LU
Slave LU
Slave LU
Slave LU
PQ
D
D
D
OQG0
D
D
D
OQG1
D
D
D
OQG2
D
D
D
OQG3
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
Table 10: Output Queue Grant Bit Map Fields
UTOPIA-3 Bit Notation
7
6
5
4
3
2
1
0
DASL/IBM 28.4G Packet Routing Switch Bit
0
1
2
3
4
5
6
7
Output Queue Grant 1
Port 0
Port 1
Port 2
Port 3
Port 4
Port 5
Port 6
Port 7
Output Queue Grant 2
Port 8
Port 9
Port 10
Port 11
Port 12
Port 13
Port 14
Port 15
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