參數資料
型號: PSB7110
廠商: SIEMENS AG
英文描述: Enhanced ISDN Data Access Controller ISAR
中文描述: 增強綜合業(yè)務數字網的數據接入控制器專家組
文件頁數: 50/164頁
文件大?。?/td> 1173K
代理商: PSB7110
_________________________________________________PSB 7110
Siemens Aktiengesellschaft
Page 50
3.2.4
Buffer Control Command (Host
ISAR)
The IO-buffer control commands are interpreted immediately after being received by the ISAR.
7
6
5
4
2
1
0
DPS
MSC
MDS
HIS
15
0
14
0
13
0
12
0
11
0
10
0
9
8
CTRL MSB
CRB
7
6
5
4
3
2
1
0
CTRL LSB
0
DPS ... Datapath selection
00:
01:
10:
path 0
path 1
path 2
MSC ... Message coding
The message coding is different for datapath 0 and datapath 1, 2.
1111:
control command for datapath 0 (DPS=00)
1010:
control command for datapath 1 or 2 (DPS=01 or 10)
MDS ... Message destination/source
The destination coding is different for datapath 0 and datapath 1, 2.
10:
message is addressed to buffer (for DPS=00)
00:
message is addressed to buffer (for DPS=01 or 10)
CRB ... Clear / Reset Buffers
00: clear receive buffer
01: clear transmit buffer
1x: reset read and write buffers to their initial values (note: bit8 is don't care)
The buffer clear commands do not change the settings of the base priority or the message length.
The reset command clears both, read and write buffers, and reset them to their initial factory settings.
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