w83977atf Winbond Electronics Corp America, w83977atf Datasheet - Page 102

• Manufacturer Part Number: w83977atf
• Description: Winbond I/o
• Manufacturer: Winbond Electronics Corp America

Bit 7:
Bit 6:
Bit 5:
Table: IR receiver input pin selection
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)
Bit 4:
Bit 3:
Bit 2~0:
4.9.8 Set7.Reg7 - Infrared Module Control Register (IRM_CR)
Default Value
IRM_CR
Reg.
IRRX is the input of the low speed or high speed IR receiver, IRRXH is the input of the high speed IR receiver.
IRSL0D
0
0
0
0
1
1
1
1
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.
IRSL0D - Direction of IRSL0 Pin
Select function for IRRXH or IRSL0 because they share common pin and have different
input/output direction.
RXINV - Receiving Signal Invert
TXINV - Transmitting Signal Invert
Reserved, write 0.
A write to 1 will Invert the receiving signal.
A write to 1 will Invert the transmitting signal.
AM_FMT IRX_MSL IRSL0D
Bit 7
0
IRX_MSL
IRX_MSL
IRSL0_D
Bit 6
0
0
1
1
0
0
1
1
0
0
1
0
1
Bit 5
0
AUX_RX
RXINV
Bit 4
X
X
X
X
0
1
0
1
- 83 -
0
IRRX (Low/High Speed)
Receiver Pin selected
TXINV
IRRXH (High Speed)
Bit 3
0
High Speed IR
IRSL0 (O/P)
IRRXH (I/P)
Function
Publication Release Date:April 1998
X
X
X
X
0
1
0
1
Bit 2
0
-
W83977ATF
PRELIMINARY
Bit 1
Selected IR Pin
0
-
Reserved
Reserved
IRRXH
IRRXH
IRRX
IRRX
IRRX
IRRX
Revision 0.52
Bit 0
0
-