msm9405 Oki Semiconductor, msm9405 Datasheet - Page 24

• Manufacturer Part Number: msm9405
• Description: Irda Communication Controller
• Manufacturer: Oki Semiconductor

¡ Semiconductor
ICR2[0-3]
IRC2 bit
ICR2[4]
ICR2[5]
ICR2[6]
ICR2[7]
These bits work as the SBF when Extended-SIR mode is selected, and as the MBF when the MIR
mode is selected. This function is disabled in SIR mode and FIR mode.
SBF (SIR beginning Flags): These bits determine the number of BOFs to be added during
sending in Extended-SIR mode as shown below.
MBF (MIR Beginning Flags): These bits determine the number of BOFs to be added during
sending in MIR mode as shown below.
RXINV (IRIN Signal Invert): This bit is used to select active low or active high of the receive signal.
RXINV = "0": Active low
RXINV = "1": Active high
IRIN_SL (IRIN Select): This bit determines how the receive signal input pin is used.
IRIN_SL = "0": Only the input from the IRIN-A pin (2.4 kbps to 4 Mbps) is accepted.
IRIN_SL = "1": An input from IRIN-A or IRIN-B is automatically selected depending on the transfer
rate. (A: 2.4 to 115.2 kbps, B: 0.576 to 4 Mbps)
SD_INV (SD Signal Invert): This bit changes the polarity (active high/low) of the SD pin output on
the MSM9405.
SD_INV = "0": Active high ("H" output during shutdown)
SD_INV = "1": Active low ("L" output during shutdown)
CTEST (Counter Test): Normally this bit is set to "0". When TFL/TCC and MDS/RCC are read after
"1" is written to this bit, the TFL and MDS values can be obtained.
Encoding
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
SIR BOFs
13
17
25
49
49
49
49
49
49
1
2
3
4
5
7
9
Description
MIR BOFs
12
16
24
24
24
24
24
24
24
24
24
2
3
4
5
8
MSM9405
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