w83l517g Winbond Electronics Corp America, w83l517g Datasheet - Page 74

• Manufacturer Part Number: w83l517g
• Description: Winbond Lpc I/o For Notebook W83l517d/ W83l517d-f
• Manufacturer: Winbond Electronics Corp America

8.6.1
This is a 12-bit timer whose resolution is 1ms, that is, the maximum programmable time is 2
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.
8.6.2
8.6.3
Reading this register returns E8H. Writing this register selects Register Set.
Advanced IR
Bit 7~4: Reserved, write to 0.
Bit 3, 2: IR_MSL1, 0 - Infrared Mode Select
Default Value
Reset Value
Bit 1:
Bit 0:
MODE
REG.
SSR
Set4.Reg0, 1 - Timer Value Register (TMRL/TMRH)
Set4.Reg2 - Infrared Mode Select (IR_MSL)
Set4.Reg3 - Set Select Register (SSR)
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.
BIT 7
SSR7
BIT 7
0
-
1
IR_MSL1, 0
BIT 6
0
-
00
01
10
11
SSR6
BIT 6
1
BIT 5
0
-
SSR5
BIT 5
BIT 4
1
0
-
IR_MSL1
- 74 -
SSR4
BIT 4
BIT 3
1
0
Operation Mode Selected
W83L517D/W83L517D-F
SSR3
BIT 3
Legacy ASK-IR
IR_MSL0
1
Legacy SIR
BIT 2
Legacy IR
0
CIR
SSR2
BIT 2
0
TMR_TST
BIT 1
0
SRR1
BIT 1
0
EN_TMR
BIT 0
12
SRR0
BIT 0
0
-1 ms.
0