w83977atg Winbond Electronics Corp America, w83977atg Datasheet - Page 82

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

7.8.3
This 5-bit register sets SIR output pulse width.
7.8.4
Select Register Set by writing a set number to this register. Reading this register returns F0H.
7.8.5
Bit 7~4:
Default Value
Reset Value
Reset Value
HIR_FNU
SIR_PW
REG.
REG.
REG.
M_FG3~0
SSR
0000
0001
0010
0011
0100
0101
0110
0111
Set6.Reg2 - SIR Pulse Width
Set6.Reg3 - Set Select Register
Set6.Reg4 - High Speed Infrared Beginning Flag Number (HIR_FNU)
S_PW4~0
Others
00000
01101
M_FG3~0 - MIR beginning Flag Number
These bits define the number of transmitter Start Flag of MIR. Note that the number of
MIR start flag should be equal or more than two which is defined in IrDA 1.1 physical
layer. The default value is 2.
M_FG3
BIT 7
BIT 7
SSR7
BIT 7
0
1
0
-
BEGINNING FLAG NUMBER
M_FG2
BIT 6
BIT 6
SSR6
BIT 6
0
1
0
-
2 (Default)
Reserved
1
3
4
5
6
8
M_FG1
SSR5
BIT 5
BIT 5
BIT 5
1
0
1
-
- 74 -
S_PW4
M_FG0
SSR4
BIT 4
BIT 4
BIT 4
SIR OUTPUT PULSE WIDTH
0
1
0
W83977ATF/W83977ATG
3/16 bit time of IR
M_FG3~0
1000
1001
1010
1011
1100
1101
1110
1111
S_PW3
F_FL3
BIT 3
BIT 3
SSR3
BIT 3
1.6 us
1.6 us
0
0
1
S_PW2
F_FL2
BIT 2
BIT 2
SSR2
BIT 2
BEGINNING FLAG NUMBER
0
0
0
Reserved
S_PW1
F_FL1
SRR1
BIT 1
BIT 1
BIT 1
0
0
1
10
12
16
20
24
28
32
S_PW0
F_FL0
SRR0
BIT 0
BIT 0
BIT 0
0
0
0