Datasheet

PIC12F635/PIC16F636/639
DS41232D-page 124 © 2007 Microchip Technology Inc.
REGISTER 11-2: CONFIGURATION REGISTER 1
R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0
DATOUT1 DATOUT0 LCXTUN5 LCXTUN4 LCXTUN3 LCXTUN2 LCXTUN1 LCXTUN0 R1PAR
bit 8 bit 0
Legend:
R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’
-n = Value at POR ‘1’ = Bit is set ‘0’ = Bit is cleared x = Bit is unknown
bit 8-7 DATOUT<1:0>: LFDATA Output type bit
00 = Demodulated output
01 = Carrier Clock output
10 = RSSI output
11 = RSSI output
bit 6-1 LCXTUN<5:0>: LCX Tuning Capacitance bit
000000 = +0 pF (Default)
:
111111 = +63 pF
bit 0 R1PAR: Register Parity Bit – set/cleared so the 9-bit register contains odd parity – an odd number of set
bits
REGISTER 11-3: CONFIGURATION REGISTER 2
R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0
RSSIFET CLKDIV LCYTUN5 LCYTUN4 LCYTUN3 LCYTUN2 LCYTUN1 LCYTUN0 R2PAR
bit 8 bit 0
Legend:
R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’
-n = Value at POR ‘1’ = Bit is set ‘0’ = Bit is cleared x = Bit is unknown
bit 8 RSSIFET: Pull-down MOSFET on LFDATA pad bit (controllable by user in the RSSI mode only)
1 = Pull-down RSSI MOSFET on
0 = Pull-down RSSI MOSFET off
bit 7 CLKDIV: Carrier Clock Divide-by bit
1 = Carrier Clock/4
0 = Carrier Clock/1
bit 6-1 LCYTUN<5:0>: LCY Tuning Capacitance bit
000000 = +0 pF (Default)
:
111111 = +63 pF
bit 0 R2PAR: Register Parity Bit – set/cleared so the 9-bit register contains odd parity – an odd number of set
bits