w83977atg Winbond Electronics Corp America, w83977atg Datasheet - Page 76

• Manufacturer Part Number: w83977atg
• Description: W83877tf Plus Kbc, Gp I/o, Wake-up, Fir, Cir, Pb-free
• Manufacturer: Winbond Electronics Corp America

7.6.3
Reading this register returns E8H. Writing this register selects Register Set.
7.6.4
These are combined to be a 13-bit register. Writing these registers programs the transmitter frame
length of a package. These registers are only valid when APM=1 (automatic package mode,
Set5.Reg4.bit5). When APM=1, the physical layer will split data stream to a programmed frame
length if the transmitted data is larger than the programmed frame length. When these registers are
read, they will return the number of bytes which is not transmitted from a frame length programmed.
Bit 7~4: Reserved, write to 0.
Bit 3, 2: IR_MSL1, 0 - Infrared Mode Select
Bit 1:
Bit 0:
Default Value
Reset Value
Reset Value
REG.
TFRLL
SSR
TFRLH
REG.
Set4.Reg3 - Set Select Register (SSR)
Set4.Reg4, 5 - Transmitter Frame Length (TFRLL/TFRLH)
Select legacy IR, SIR, or ASK-IR mode. Note that in legacy SIR/ASK-IR user should set
DIS_BACK=1 to avoid backward when programming baud rate.
TMR_TST - Timer Test
When set to 1, reading the TMRL/TMRH returns the programmed values of TMRL/TMRH
instead of the value of down counter. This bit is for testing timer register.
EN_TMR - Enable Timer
A write to 1 will enable the timer.
IR_MSL1, 0
BIT 7
SSR7
00
01
10
11
BIT 7
1
bit 7
0
-
-
BIT 6
SSR6
BIT 6
1
bit 6
0
-
-
SSR5
BIT 5
1
BIT 5
bit 5
0
-
-
- 68 -
SSR4
BIT 4
1
BIT 4
bit 12
bit 4
OPERATION MODE SELECTED
0
0
W83977ATF/W83977ATG
BIT 3
SSR3
Legacy ASK-IR
1
BIT 3
bit 11
bit3
Legacy SIR
Legacy IR
0
0
CIR
BIT 2
SSR2
0
BIT 2
bit 10
bit 2
0
0
SRR1
BIT 1
BIT 1
0
bit 1
bit 9
0
0
SRR0
BIT 0
BIT 0
bit 0
bit 8
0
0
0