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參數(shù)資料
| 型號(hào)： | T8538B |
| 元件分類： | Codec |
| 英文描述： | T8538B Quad Programmable Codec |
| 中文描述： | T8538B四可編程編解碼器 |
| 文件頁數(shù)： | 19/44頁 |
| 文件大?。?/td> | 847K |
| 代理商： | T8538B |
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Agere Systems Inc.
19
Preliminary Data Sheet
August 2001
T8538B Quad Programmable Codec
Functional Description
(continued)
The Control Interface
(continued)
Fast Scan Mode
(continued)
0124C
* Provides sufficient wait time to access read data.
Allow a minimum of 244 ns between bytes.
Figure 17. Fast Scan, Byte-by-Byte Mode (Continuous DCLK)
Write All Channels
The write all channels command causes all four channels to be loaded with the same coefficients with a single data
transfer from the master controller. This allows for a faster initialization of the device after a powerup. This com-
mand should be used with caution since it affects all four channels. The normal memory write and read commands
affect only one channel.
Reset Functionality
0071Amod
Figure 18. Hardware Reset Procedure
1
2
3
CS
DCLK
DI
COMMAND
DATA*
4
5
DO
WAIT
≥
1.5
μ
s*
0
1
2
3
4
5
6
7
6
7
0
1
2
3
4
5
6
7
0
FS
BCLK
RST
DEVICE
CAN NOW BE PROGRAMMED
RUNS CONTINUOUSLY
RUNS CONTINUOUSLY
WAIT
≥
5 ms
≥
1 ms
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