W83977AF Information Storage Devices, Inc, W83977AF Datasheet - Page 83

• Manufacturer Part Number: W83977AF
• Description: W83877TF Plus Kbc, Cir, RTC
• Manufacturer: Information Storage Devices, Inc

4.8.3 Set6.Reg2 - SIR Pulse Width
This 5-bit register sets SIR output pulse width.
4.8.4 Set6.Reg3 - Set Select Register
Select Register Set by writing a set number to this register. Reading this register returns F0H.
4.8.5 Set6.Reg4 - High Speed Infrared Beginning Flag Number (HIR_FNU)
Bit 7~4:
Default Value
HIR_FNU
Reset Value
Reset Value
SIR_PW
Reg.
Reg.
Reg.
SSR
M_FG3~0
0000
0001
0010
0011
0100
0101
0110
0111
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.
S_PW4~0
M_FG3
Others
SSR7
00000
01101
Bit 7
Bit 7
Bit 7
0
1
0
-
Beginning Flag Number
M_FG2
SSR6
Bit 6
Bit 6
Bit 6
2 (Default)
0
1
0
Reserved
-
1
3
4
5
6
8
M_FG1
SSR5
Bit 5
Bit 5
Bit 5
0
1
1
-
SIR Output Pulse Width
- 71 -
3/16 bit time of IR
S_PW4
M_FG0
SSR4
Bit 4
Bit 4
Bit 4
1.6 us
1.6 us
0
1
0
M_FG3~0
1000
1001
1010
1011
1100
1101
1110
1111
W83977F/ W83977AF
S_PW3
F_FL3
SSR3
Bit 3
Bit 3
Bit 3
Publication Release Date: March 1998
0
0
1
S_PW2
Beginning Flag Number
F_FL2
SSR2
Bit 2
Bit 2
Bit 2
0
0
0
Reserved
PRELIMINARY
S_PW1
F_FL1
SRR1
10
12
16
20
24
28
32
Bit 1
Bit 1
Bit 1
0
0
1
Revision 0.58
S_PW0
F_FL0
SRR0
Bit 0
Bit 0
Bit 0
0
0
0