W83697HF/F
CRF0 (Default 0x00)
Bit 7 - 4 : Reserved.
Bit 3
: RXW4C
= 0 No reception delay when SIR is changed from TX mode to RX mode.
= 1 Reception delays 4 characters-time (40 bit-time) when SIR is changed from TX mode
to RX mode.
Bit 2
: TXW4C
= 0 No transmission delay when SIR is changed from RX mode to TX mode.
= 1 Transmission delays 4 characters-time (40 bit-time) when SIR is changed from RX
mode to TX mode.
Bit 1 - 0 : SUBCLKB1, SUBCLKB0
= 00 UART B clock source is 1.8462 Mhz (24MHz/13)
= 01 UART B clock source is 2 Mhz (24MHz/12)
= 10 UART B clock source is 24 Mhz (24MHz/1)
= 11 UART B clock source is 14.769 Mhz (24mhz/1.625)
CRF1 (Default 0x00)
Bit 7
Bit 6
: Reserved.
: IRLOCSEL. IR I/O pins' location select.
= 0 Through SINB/SOUTB.
= 1 Through IRRX/IRTX.
Bit 5
Bit 4
Bit 3
: IRMODE2. IR function mode selection bit 2.
: IRMODE1. IR function mode selection bit 1
: IRMODE0. IR function mode selection bit 0.
IR MODE
IR FUNCTION
Disable
IrDA
IRTX
IRRX
00X
tri-state
high
010*
011*
100
101
Active pulse 1.6 mS
Demodulation into SINB/IRRX
Demodulation into SINB/IRRX
routed to SINB/IRRX
IrDA
Active pulse 3/16 bit time
Inverting IRTX/SOUTB pin
ASK-IR
ASK-IR
Inverting IRTX/SOUTB & 500 KHZ
clock
routed to SINB/IRRX
110
ASK-IR
ASK-IR
Inverting IRTX/SOUTB
Demodulation into SINB/IRRX
Demodulation into SINB/IRRX
111*
Inverting IRTX/SOUTB & 500 KHZ
clock
Note: The notation is normal mode in the IR function.
Publication Release Date: Feb. 2002
Revision 0.70
- 146 -
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