参数资料
型号: SH1475IMLTRT
元件分类: 微控制器/微处理器
英文描述: SPECIALTY MICROPROCESSOR CIRCUIT, PQCC36
封装: 6 X 6 MM, 0.50 MM PITCH, ROHS COMPLIANT, PLASTIC, MLPQ-36
文件页数: 7/11页
文件大小: 143K
代理商: SH1475IMLTRT
SH1475 TO HOST COMMUNICATION
Copyright 1999-2005 Semtech Corporation
SH1475 data sheet v1.08 (2005-04-21)
www.semtech.com
5
SH1475
nChipSelect
(from Host)
nTxReq
(from Host)
MISO
(from Host)
1
23
4
5
F L O A T I N G
FLOATING
D O N’ T C A R E
DON’T CARE
F L O A T I N G
FLOATING
SCLK
(from SH1475)
MOSI
(from SH1475)
nWakeUp
(from SH1475)
Host is awake or sleeping, SH1475 has data to send
1. SH1475 asserts nWakeUp.
2. Host asserts nChipSelect. If nChipSelect is low already, it will stay low.
3. SH1475 drives the MOSI and SCLK lines and sends the packet. Host may send a complete command packet,
or Host must keep MISO line static (or at least NOT send command packet sync pattern in the first byte).
4. SH1475 floats the MOSI and SCLK lines and de-asserts nWakeUp.
5. Host may de-assert nChipSelect and go to sleep.
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