參數(shù)資料
型號(hào): 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): 130/164頁
文件大?。?/td> 1173K
代理商: PSB7110
_________________________________________________PSB 7110
Siemens Aktiengesellschaft
Page 130
Transfer of Program Blocks
Following the D-key and the appropriate response, the program block can be written to the mailbox.
In one message up to 126 Codewords (= 252 byte) of the program block can be transfered, so if the
program block is larger than 126 words, it has to be divided into messages of a length between 1 and
126 words.
The start address in every new message must be corrected in a way that it indicates the start address
of the first program codeword of this message.
7
6
5
4
3
2
1
0
DPS
MSC
HIS
0
0
0
1
1
1
1
0
15
14
13
12
11
10
9
8
CTRL MSB
0
7
6
5
4
3
2
1
0
CTRL LSB
NOM
7
6
5
4
3
2
1
0
1. Parameter
SAM
7
6
5
4
3
2
1
0
2. Parameter
SAL
7
6
5
4
3
2
1
0
3. Parameter
NOC
16-bit program codewords starting from here in the sequence first MSB, then LSB:
7
6
5
4
3
2
1
0
4. Parameter
MSB of first program word
7
6
5
4
3
2
1
0
5. Parameter
LSB of first program word
NOM ... Number of Valid Bytes in the Mailbox
The number of bytes in the mailbox = 2
number of codewords + 3
The following parameters contain the startaddress, the number of program codewords in this
message and the program codewords. The start address refers to the first program word (4th and 5th
parameter).
SAM ... Start address MSB
Contains the MSB of the program block start address.
SAL ... Start address LSB
Contains the LSB of the program block start address.
NOC ... Number of codewords
Number of 16-bit program words which follow, starting with the 4th parameter. One word
means two entries to the mailbox as they are written separately in the sequence MSB first
and then LSB.
The maximum number for NOC is 126.
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