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): 128/164頁
文件大小: 1173K
代理商: PSB7110
_________________________________________________PSB 7110
Siemens Aktiengesellschaft
Page 128
3.10.4
Program Code Download
The program code is available in a binary file in which data is stored in 16 bit words. This file is
provided together with the ISAR V1.0 device itself.
The file has a logical structure where data is divided into individual blocks of program code and a
header belonging to it. Each block consists of contiguous program data and a header with the start
address, the length of the block and a specific key word.
If the DSP code consists of several blocks, the header of a new block follows right after the last word
of the preceding block.
The structure of several blocks would have the following format (each word is 16 bit). The byte
sequence in each word is Lowbyte / Highbyte:
1. word
2.
3.
4.
5.
:
(L+3).
(L+4).
(L+5).
(L+6).
(L+7).
(L+8).
:
(L+M+6).
(L+M+7).
:
Startaddress block 1
Length L of block 1
D-key of block 1
1st program word
2nd program word
:
L-th program word
Startaddress block 2
Length M of block 2
D-key of block 2
1st program word
2nd program word
:
M-th program word
Startaddress of block 3
:
Block 1
Block 2
Block 3
Note: Only the 8 LSBs of the D-key are valid.
Transfer of D-key
To start the download of one block, the key word (only LSB is valid) has to be written to the mailbox
first, which is acknowledged by a response.
7
6
5
4
3
2
1
0
DPS
MSC
HIS
0
0
0
0
0
0
1
0
15
14
13
12
11
10
9
8
CTRL MSB
DKEY
7
6
5
4
3
2
1
0
CTRL LSB
0
DKEY ... D-key word
The third word of the blockheader contains the D-key. Only the least significant byte is written
to the mailbox.
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