W83977G Winbond Electronics Corp America, W83977G Datasheet - Page 72

• Manufacturer Part Number: W83977G
• Description: W83877TF plus KBC, CIR, RTC, Pb-free
• Manufacturer: Winbond Electronics Corp America

7.5.2
This register is read only. Reading this register returns IR Control Register value of Set 0.
7.5.3
This register is read only. Reading this register returns IR FIFO Control Register (UFR) value of SET
0.
7.5.4
Reading this register returns E4H. Writing a value selects a Register Set.
7.6
7.6.1
This is a 12-bit timer whose resolution is 1ms, that is, the maximum programmable time is 2 12 -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.
Default Value
Default Value
Default Value
REG.
REG.
REG.
SSR
SSR
SSR
ADDRESS
W83977F-A/ W83977G-A/ W83977AF-A/ W83977AG-A
OFFSET
Set4 - TX/RX/Timer counter registers and IR control registers.
0
1
2
3
4
5
6
7
Reg1 - Mapped IR Control Register (MP_UCR)
Reg2 - Mapped IR FIFO Control Register (MP_UFR)
Reg3 - Sets Select Register (SSR)
Set4.Reg0, 1 - Timer Value Register (TMRL/TMRH)
BIT 7
SSR7
BIT 7
SSR7
BIT 7
SSR7
0
0
1
REGISTER
IR_MSL
RFRLH
TFRLH
RFRLL
TFRLL
NAME
TMRH
TMRL
SSR
BIT 6
SSR6
BIT 6
SSR6
BIT 6
SSR6
0
0
1
SSR5
SSR5
SSR5
BIT 5
BIT 5
BIT 5
Timer Value Low Byte
Timer Value High Byte
Infrared Mode Select
Sets Select Register
Transmitter Frame Length Low Byte
Transmitter Frame Length High Byte
Receiver Frame Length Low Byte
Receiver Frame Length High Byte
0
0
1
BIT 4
SSR4
BIT 4
SSR4
BIT 4
SSR4
-64
0
0
0
REGISTER DESCRIPTION
SSR3
SSR3
SSR3
BIT 3
BIT 3
BIT 3
0
0
0
SSR2
SSR2
SSR2
BIT 2
BIT 2
BIT 2
0
0
1
SRR1
SRR1
SRR1
BIT 1
BIT 1
BIT 1
0
0
0
SRR0
SRR0
SRR0
BIT 0
BIT 0
BIT 0
0
0
0