參數(shù)資料
型號: PEB2466-HV1.2
廠商: SIEMENS A G
元件分類: 編解碼器
英文描述: Four Channel Codec Filter with PCM- and m-Controller Interface SICOFI4-mC
中文描述: A/MU-LAW, PCM CODEC, PQFP64
文件頁數(shù): 22/82頁
文件大?。?/td> 3330K
代理商: PEB2466-HV1.2
PEB 2466
Functional Description
Semiconductor Group
22
02.97
2.3
The internal configuration registers, the signaling interface, and the Coefficient-RAM
(CRAM) of the SICOFI-4-
μ
C are programmable via a serial
μ
-Controller interface.
The
μ
-Controller interface consists of four lines: CS, DCLK, DIN and DOUT:
CS is used to start a serial access to the SICOFI-4-
μ
C registers and Coefficient-RAM.
Following a falling edge of CS, the first eight bits received on DIN specify the command.
Subsequent data bytes (number depends on command) are stored in the selected
configuration registers or the selected part of the Coefficient-RAM.
The
μ
-Controller Interface
Figure 8
Example for a Write Access, with Two Data Bytes Transferred
If the first eight bits received via DIN specify a read-command, the SICOFI-4 will start a
response via DOUT with its specific address byte (81
H
). After transmitting this
identification, the specified n data bytes (contents of configuration registers, or contents
of the CRAM) will follow on DOUT.
ITD07261
7
6
5
4
3
2
1
0
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
DIN
DOUT
DCLK
CS
Control
Data Byte 1
Data Byte 2
High ’Z’
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