w83877atd Winbond Electronics Corp America, w83877atd Datasheet - Page 69

• Manufacturer Part Number: w83877atd
• Description: Winbond I/o
• Manufacturer: Winbond Electronics Corp America

Bit 7~4: Reserved, write to 0.
Bit 3, 2: IR_MSL1, 0 - Infrared mode Select
Bit 1:
Bit 0:
4.3.6.3 Set4.Reg3 - Set Select Register (SSR)
Reading this register returns E8
4.3.6.4 Set4.Reg4, 5 - Transmitter Frame Length (TFRLL/TFRLH)
default Value
Reset Value
Reset Value
TFRLL
TFRLH
Reg.
Reg.
SSR
Select legacy UART or SIR or ASK-IR mode. Note that using legacy SIR/ASK-IR should set
DIS_BACK=1 to avoid backward operation when programming baud rate. Mode selected is
shown below. Note that to avoid legacy backward operation, the bit of DIS_BACK (Disable
Backward, in Set2.Reg4. Bit7) should be set to 1 when legacy ASK-IR mode or legacy SIR
mode is selected.
TMR_TST - Timer Test
Write to 1 will cause reading the TMRL/TMRH will return the programmed values of
TMRL/TMRH, that is, it does not return down count counter value. This bit is for test timer
register.
EN_TMR - Enable Timer
Write to 1 enables the timer.
SSR7
Bit 7
Bit 7
bit 7
1
0
-
-
IR_MSL1, 0
00
01
10
11
SSR6
Bit 6
Bit 6
bit 6
1
0
-
-
16
. A write to this register selects other Set.
SSR5
Bit 5
Bit 5
bit 5
1
0
-
-
SSR4
bit 12
Bit 4
Bit 4
- 65 -
bit 4
1
0
0
Operation Mode Selected
Legacy ASK-IR
Legacy UART
SSR3
bit 11
Legacy SIR
Bit 3
Bit 3
bit3
Reserved
1
0
0
Publication Release Date: April 1998
SSR2
bit 10
Bit 2
Bit 2
bit 2
0
0
0
W83877ATF
SRR1
Bit 1
Bit 1
bit 1
bit 9
0
0
0
Version 0.51
SRR0
Bit 0
Bit 0
bit 0
bit 8
0
0
0