cs5535 National Semiconductor Corporation, cs5535 Datasheet - Page 396

• Manufacturer Part Number: cs5535
• Description: Geode Cs5535 Companion Multi-function South Bridge
• Manufacturer: National Semiconductor Corporation

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UART/IR Controller Register Descriptions
5.12.10.3 CEIR Configuration Register (RCCFG)
I/O Offset
Type
Reset Value
RCCFG controls the basic operation of the CEIR mode.
Bit
R_LEN
7
6
5
7
MCFR[4:0]
01101
01110
01111
10000
10001
10010
10011
10100
10101
10110
10111
11000
11001
11010
11011
11100
11101
11110
11111
Name
R_LEN
T_OV
RXHSC
02h
R/W
00h
T_OV
6
Table 5-50. CEIR Carrier Frequency Encoding (Continued)
Description
Run Length Control. When set to 1, this bit enables run length encoding/decoding. The
format of a run length code is:
Yxxxxxxx, where Y is the bit value and xxxxxxx is the number of bits minus 1 (selects
from 1 to 128 bits).
Receiver Sampling Mode.
0: Programmed T period sampling.
1: Oversampling mode.
Receiver Carrier Frequency Select. This bit selects the receiver demodulator fre-
quency range.
0: Low frequency: 30.0-56.9 kHz.
1: High frequency: 400-480 kHz.
RXHSC
Low Frequency (TXHSC = 0)
5
Reserved
RCCFG Bit Descriptions
56.9 kHz
40 kHz
41 kHz
42 kHz
43 kHz
44 kHz
45 kHz
46 kHz
47 kHz
48 kHz
49 kHz
50 kHz
51 kHz
52 kHz
53 kHz
54 kHz
55 kHz
56 kHz
RCCFG Register Map
RCDM_DS
4
396
(Continued)
RSVD
3
TXHSC
2
High Frequency (TXHSC = 1)
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
1
RC_MMD[1:0]
Revision 0.8
0