W83L517D_05 Datasheet, PDF (89/133 Pages) Winbond – LPC I/O for Notebook

W83L517D/W83L517D-F
8.9.8 Set7.Reg7 - Infrared Module Control Register (IRM_CR)
REG.
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
IRM_CR AM_FMT IRX_MSL IRSL0D RXINV TXINV
-
DEFAULT
VALUE
0
0
0
0
0
0
BIT 1
-
0
BIT 0
-
0
Bit 7:
Bit 6:
Bit 5:
AM_FMT - Automatic Format
A write to 1 will enable automatic format IR front-end module. These bits will affect the
output of IR_SL2~0 which is referred by IR front-end module selection (Set7.Reg4~6)
IRX_MSL - IR Receiver Module Select
Select the receiver input path from the IR front end module if IR module has a separated
high speed and low speed receiver path. If the IR module has only one receiving path,
then this bit should be set to 0.
IRX_MSL
Receiver Pin selected
0
IRRX (Low/High Speed)
1
IRRXH (High Speed)
IRSL0D - Direction of IRSL0 Pin
Select function for IRRXH or IRSL0 because they share common pin and have different
input/output direction.
IRSL0_D
Function
0
IRRXH (I/P)
1
IRSL0 (O/P)
Table: IR receiver input pin selection
IRSL0D
IRX_MSL
AUX_RX
HIGH SPEED IR SELECTED IR PIN
0
0
0
X
IRRX
0
0
1
X
IRRXH
0
1
X
0
IRRX
0
1
X
1
IRRXH
1
0
0
X
IRRX
1
0
1
X
Reserved
1
1
X
0
IRRX
1
1
X
1
Reserved
Note: that (1) AUX_RX is defined in Set5.Reg4.Bit4, (2) high speed IR includes MIR (1.152M or 0.576M bps) and FIR (4M bps),
(3) IRRX is the input of the low speed or high speed IR receiver, IRRXH is the input of the high speed IR receiver.
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Publication Release Date: May 23, 2005
Revision 1.0