W83L517D_05 Datasheet, PDF (74/133 Pages) Winbond – LPC I/O for Notebook

W83L517D/W83L517D-F
8.6.1 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.
8.6.2 Set4.Reg2 - Infrared Mode Select (IR_MSL)
MODE
BIT 7 BIT 6 BIT 5 BIT 4
BIT 3
Advanced IR -
-
-
-
IR_MSL1
Reset Value
0
0
0
0
0
BIT 2
IR_MSL0
0
BIT 1
TMR_TST
0
BIT 0
EN_TMR
0
Bit 7~4: Reserved, write to 0.
Bit 3, 2: IR_MSL1, 0 - Infrared Mode Select
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.
IR_MSL1, 0
00
01
10
11
Operation Mode Selected
Legacy IR
CIR
Legacy ASK-IR
Legacy SIR
Bit 1:
Bit 0:
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.
8.6.3 Set4.Reg3 - Set Select Register (SSR)
Reading this register returns E8H. Writing this register selects Register Set.
REG.
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
SSR
SSR7 SSR6 SSR5 SSR4 SSR3 SSR2
Default Value
1
1
1
1
1
0
BIT 1
SRR1
0
BIT 0
SRR0
0
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