參數(shù)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(qiáng)綜合業(yè)務(wù)數(shù)字網(wǎng)的數(shù)據(jù)接入控制器專家組
文件頁數(shù): 65/164頁
文件大?。?/td> 1173K
代理商: PSB7110
_________________________________________________PSB 7110
Siemens Aktiengesellschaft
Page 65
3.5.1.2
SART Status Events with Receive Data - ASYNC (ISAR
Host)
7
6
5
4
3
2
1
0
DPS
MSC
MDS
IIS
1
0
0
0
0
0
15
-
14
-
13
12
11
10
9
-
8
-
CTRL MSB
BRE
BRS
DSD
PER
7
6
5
4
3
2
1
0
CTRL LSB
NOM
7
6
5
4
3
2
1
0
1. Parameter
1st databyte of the message
:
7
6
5
N-th databyte of the message
4
3
2
1
0
N. Parameter
DPS ... Datapath selection
01:
10:
path 1
path 2
A status information is valid, if the corresponding bit is set to "1":
BRE ... Break Signal End detected
BRS ... Break Signal Start detected
DSD ... Deleted Stopbit Detected
It is up to the host to decide whether this indicates a frame error or an allowed stop bit
deletion due to overspeed range.
PER ... Parity Error
NOM ... Number of Valid Bytes in the Mailbox
Indicates the number N of valid data bytes to be read from the mailbox.
Break End occurs with the first character in the mailbox, which is not valid. If the message contains
more than one character, all characters starting from the second are valid.
All other status indications (bit 12 - 10) refer to the last character of the message, so the last
character is not valid if one of these bits is set.
For all conditions indicated in bit 12 to 10, valid data in the buffer is indicated to the host although the
message length may not yet be complete.
For characters with a length of 5, 6 or 7 bits the parity bit is transfered together with the character in
bit position 5, 6 or 7 respectively. It is not available for 8 bit characters.
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