W83787IF Datasheet, PDF (77/123 Pages) Winbond – WINBOND I/O WITH SERIAL-INFRARED SUPPORT

W83787IF
SIRRX1, SIRRX0 (Bit 5, 4):
These two bits select IRRX in the IR function.
00
IRRX2 (Pin 3, PDCIN)
01
IRRX1 (Pin 42, SINB)
10
IRRX4 (Pin 94, nCS0)
11
IRRX3 (Pin 1, nRESIDE)
During the power-on reset, the default value is 00. .
Half/Full DUPLEX (Bit 3):
This bit select IR function operating in Half or Full Duplex mode.
0
The IR function is Full Duplex.
1
The IR function is Half Duplex.
IRMODE2, IRMODE1, IRMODE0 (Bit 2, 1, 0):
These three bits select IR operation mode.
IR MODE
00X
010*
011*
100
101
110
111*
IR Function
Disable
IrDA
IrDA
ASK-IR
ASK-IR
ASK-IR
ASK-IR
IRTX
tri-state
Active pulse 1.6 us
Active pulse 3/16 bit time
Inverting IRTX pin
Inverting IRTX & 500KHZ clock
Inverting IRTX
Inverting IRTX & 500KHZ clock
IRRX
high
Demodulation into SINB
Demodulation into SINB
routed to SINB
routed to SINB
Demodulation into SINB
Demodulation into SINB
Note: The notation is normal mode in the IR function.
The SIR schematic diagram controlled the register CRC and CRD is shown as follows.
16550A
SIN
UART2
SOUT
Transmission
Time Frame
HUPLX
(CRD.bit3)
IRRX1 _SIN2
1
MUX ⁰
1
MUX ⁰
RX2INV _URIRSEL IRMODE2,1=00
(CRC.bit1) _(CRC.bit3)
IRMODE2
(CRD.bit2)
IRDA Mod.
3/16
1
IRDA Mod.
Mod1.6u
0 MUX
IRDA
500KHZ
IRMODE0
(CRD.bit0)
1
0 MUX
Demodulation
IR-DA
1
MUX 0
IRMODE1
(CRD.bit1)
0
1 MUX
IRMODE2
(CRD.bit2)
Demodulation
ASK_IR
01
00
10
MUX ¹¹
IRRX2
IRRX4
IRRX3
(default)
PDCIN
NCS0
NRSTIDE
SIRRX1~0
CR0D.bit5,4
0
1 MUX
TX2INV
URIRSEL _CRC.bit0
(CRC,bit3)
11,00
01
MUX10
(default)
IRTX2 _PDBDIR
IRTX1 _SOUT2
IRTX3
NCS1
SIRTX1~0
CRD.bit7,6
IRMODE0
(CRD.bit0)
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Publication ReleaseDate:Sep 1995
Revision A1