W83977F-A Datasheet, PDF (72/182 Pages) Winbond – WINBOND I/O

W83977F-A/ W83977G-A/ W83977AF-A/ W83977AG-A
7.5.2 Reg1 - Mapped IR Control Register (MP_UCR)
This register is read only. Reading this register returns IR Control Register value of Set 0.
REG.
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
SSR
Default Value
SSR7
0
SSR6
0
SSR5
0
SSR4
0
SSR3
0
SSR2
0
SRR1
0
BIT 0
SRR0
0
7.5.3 Reg2 - Mapped IR FIFO Control Register (MP_UFR)
This register is read only. Reading this register returns IR FIFO Control Register (UFR) value of SET
0.
REG.
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
SSR
Default Value
SSR7
0
SSR6
0
SSR5
0
SSR4
0
SSR3
0
SSR2
0
SRR1
0
SRR0
0
7.5.4 Reg3 - Sets Select Register (SSR)
Reading this register returns E4H. Writing a value selects a Register Set.
REG.
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
SSR
Default Value
SSR7
1
SSR6
1
SSR5
1
SSR4
0
SSR3
0
SSR2
1
BIT 1
SRR1
0
BIT 0
SRR0
0
7.6 Set4 - TX/RX/Timer counter registers and IR control registers.
ADDRESS
OFFSET
REGISTER
NAME
REGISTER DESCRIPTION
0
TMRL
Timer Value Low Byte
1
TMRH
Timer Value High Byte
2
IR_MSL
Infrared Mode Select
3
SSR
Sets Select Register
4
TFRLL
Transmitter Frame Length Low Byte
5
TFRLH
Transmitter Frame Length High Byte
6
RFRLL
Receiver Frame Length Low Byte
7
RFRLH
Receiver Frame Length High Byte
7.6.1 Set4.Reg0, 1 - Timer Value Register (TMRL/TMRH)
This is a 12-bit timer whose resolution is 1ms, that is, the maximum programmable time is 212-1 ms.
The timer is a down-counter and starts counting down when EN_TMR (Enable Timer) of Set4.Reg2 is
set to 1. When the timer counts down to zero and EN_TMR=1, the TMR_I is set to 1 and a new initial
value will be loaded into counter.
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