CS5535-UDCF AMD (ADVANCED MICRO DEVICES), CS5535-UDCF Datasheet - Page 412

• Manufacturer Part Number: CS5535-UDCF
• Manufacturer: AMD (ADVANCED MICRO DEVICES)

Specifications of CS5535-UDCF

• Operating Temperature (min): 0C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Compliant

6.12.10.2 IR Transmitter Modulator Control Register (IRTXMC)
I/O Offset
Type
Reset Value
IRTXMC selects the modulation subcarrier parameters for CEIR and Sharp-IR mode transmission. For Sharp-IR, only the
subcarrier pulse width is controlled by this register; the subcarrier frequency is fixed at 500 kHz.
After reset, the value of this register is 69h, selecting a carrier frequency of 36 kHz and an IR pulse width of 7 µs for CEIR,
or a pulse width of 0.8 µs for Sharp-IR.
412
Bit
7:5
4:0
7
MCPW[2:0]
0 0 0
0 0 1
0 1 0
0 1 1
1 0 0
1 0 1
1 1 0
1 1 1
Name
MCPW[2:0]
MCFR[4:0]
MCPW[2:0]
01h
R/W
69h
6
31506B
Low Frequency (TXHSC = 0) (CEIR only)
Description
Modulation Subcarrier Pulse Width. Specifies the pulse width of the subcarrier clock,
as shown in Table 6-49. (Default = 011.)
Modulation Subcarrier Frequency. These bits set the frequency for the CEIR modula-
tion subcarrier. The encoding is defined in Table 6-50. (Default = 01001.)
Table 6-49. Modulation Carrier Pulse Width
5
Reserved
Reserved
Reserved
Reserved
IRTXMC Bit Descriptions
10.6 µs
6.0 µs
7.0 µs
9.0 µs
IRTXMC Bit Map
4
3
AMD Geode™ CS5535 Companion Device Data Book
High Frequency (TXHSC = 1) (CEIR or
MCFR[4:0]
2
UART and IR Port Register Descriptions
Sharp-IR)
Reserved
Reserved
Reserved
Reserved
Reserved
0.7 µs
0.8 µs
0.9 µs
1
0