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蓝牙驱动,调晶振:How to calibrate crys...

资料介绍
How to calibrate crystal trimHow to calibrate crystal trim

FAE SH Sallen.dong Dec 20st, 2006

Purpose
In RF test procedure, we often meet with carrier frequency drift fail. To calibrate crystal trim , we can resolve this issue usually.

Need to tools

Bluesuit 1.Bluetest.exe 2.btcli.exe 频谱分析仪 MT8852B or CMU200

Step 1

1.断开BT chip 与Host的连接 2.从TX ,RX 把UART接到PC的口。(需要用到RS232-TTL3V 电平转接 板)

Step 2 Open btcli.exe

1.Select protocol :bcsp 2.Select com port:com1 3.Select baud rate:115200 4.Click OK 5.Set crystal :psset 0x01fe 0x6590(26M)/0x3e80(16M) 6.Set crystal trim:psset 0x01f6 0x001d(default) see next page. 7.Bcset warm_reset (exit btcli)

Btcli

Open bluetest

1.Select protocal:bcsp 2.Select port:com1 3.Baud rate :115200 4.Click “OK”

Bluetest

Txstart

1.Select Txstrart 2.Click “execute”

Spectrum analys……
标签:calibratecrystal
蓝牙驱动,调晶振:How to calibrate crys...
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