參數(shù)資料
型號: PEF2426
英文描述: Analog IC
中文描述: 模擬IC
文件頁數(shù): 44/73頁
文件大?。?/td> 1618K
代理商: PEF2426
PEB 2466
PEF 2466
Interface Description
Hardware Reference Manual
35
2001-02-20
Table 25
Clock Programming
5.4
Serial Microcontroller Interface
The Serial Microcontroller Interface is used to access the SICOFI
4-μC
s internal
registers and the Coefficient RAM (CRAM). The Serial Microcontroller Interface consists
of four pins: two data pins (DIN, DOUT), one clock pin (DCLK) and one pin for chip select
(CS#). If DIN and DOUT are strapped together, only three microcontroller I/O pins are
required to build this interface.
Figure 20
Serial Microcontroller Interface
CHCLK1
CHCLK2
XR4.Field T
0000
Output (Pin 33)
High level (+5V)
Clock period = T *2ms
(min. 2 ms, max. 28 ms)
XR5.CHCLK2
00
01
10
11
Output (Pin 16)
High level (+5V)
512 kHz signal
256 kHz signal
16384 kHz signal
0001 to 1110
1111
Low level (0V)
SICOFI4-μC
Microcontroller
Out
In
Out
Out
CS#
DOUT
DCLK DIN
SICOFI4-μC
Microcontroller
Out
Out
I/O
CS#
DOUT
DCLK DIN
Configuration A:
Separate DIN, DOUT
Configuration B:
Bi-Directional Data
2466_221
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