PIC12F635/PIC16F636/639
FIGURE 11-1:
FUNCTIONAL BLOCK DIAGRAM – ANALOG FRONT-END
÷ 64
AGC
LCX
Detector
WAKEX
Tune X
RF
Lim
Sensitivity
Control X
Mod
A
÷ 64
LCCOM
WAKEY
AGC
LCY
Σ
Detector
WAKEZ
Tune Y
RF
Lim
Sensitivity
Control Y
Mod
A
LCCOM
÷ 64
AGC
LCZ
Detector
Tune Z
RF
Lim
Sensitivity
Control Z
Watchdog
Mod
A
B
Modulation
Depth
To Sensitivity X
32 kHZ
Oscillator
AGC
Timer
Output Enable
Filter
LCCOM
To Sensitivity Y
To Sensitivity Z
AGC Preserve
Command Decoder/Controller
To Modulation
Transistors
To Tuning Cap X
To Tuning Cap Y
To Tuning Cap Z
Configuration
Registers
RSSI
SCLK/ALERT
CS
LFDATA/RSSI/
CCLK/SDIO
VSST
VDDT
MCU
DS41232D-page 100
© 2007 Microchip Technology Inc.