pc87317vul National Semiconductor Corporation, pc87317vul Datasheet - Page 187

• Manufacturer Part Number: pc87317vul
• Description: Pc87317vul/pc97317vul Superi/o Plug And Play Compatible With Acpi Compliant Controller/extender
• Manufacturer: National Semiconductor Corporation

TABLE 7-26. Consumer-IR Carrier Frequency Encoding
MCFR Bits
Encoding
43210
00000
00001
00010
00011
00100
00101
00110
00111
01000
01001
01010
01011
01100
01101
01110
11010
11011
11100
11101
11110
11111
DFR Bits
4 3 2 1 0
1 1 0 1 1
1 1 1 0 1
. . .
Low Frequency
(TXHSC = 0)
min/max
56.9 KHz
reserved
reserved
reserved
reserved
30 KHz
31 KHz
32 KHz
33 KHz
34 KHz
35 KHz
36 KHz
37 KHz
38 KHz
39 KHz
40 KHz
41 KHz
53 KHz
54 KHz
55 KHz
56 KHz
max
max
min
min
. . .
Enhanced Serial Port with IR - UART2 (Logical Device 5)
51.90
57.36
54.38
60.10
0 0 1
High Frequency
(TXHSC = 1)
reserved
reserved
reserved
400 KHz
reserved
reserved
reserved
reserved
450 KHz
reserved
reserved
480 KHz
reserved
reserved
reserved
reserved
reserved
reserved
reserved
reserved
reserved
. . .
DBW2-0 (Bits 7, 6 and 5 of IRRXDC)
49.54
60.55
51.90
63.44
0 1 0
187
7.18.3 Consumer-IR Configuration Register (RCCFG),
This register control the basic operation of the Consumer-
IR mode. After reset, the content of this register is 00h.
Bits 1,0 - Transmitter Modulator Mode (RC_MMD(1,0))
0
MCPW Bits
7
Encoding
0 1 1
47.39
64.11
49.65
67.17
Determines how infrared pulses are generated from the
transmitted bit string. (see Table 7-28).
TABLE 7-27. Carrier Clock Pulse Width Options
R_LEN
7 6 5
0 0 0
0 0 1
0 1 0
0 1 1
1 0 0
1 0 1
1 1 0
1 1 1
0
6
FIGURE 7-37. RCCFG Register Bitmap
T_OV
0
5
RXHSC
0
4
RCDM_DS
0
0
3
45.41
68.12
47.58
71.37
1 0 0
Low Frequency
(TXHSC = 0)
Reserved
0
2
10.6 sec
Reserved
Reserved
Reserved
Reserved
6 sec
7 sec
9 sec
TXHSC
0
1
RC_MMD1
0
Consumer-IR
0
Reset
Required
RC_MMD0
43.60
72.66
45.68
76.13
1 0 1
Configuration Register
High Frequency
(TXHSC = 1)
Reserved
Reserved
Reserved
Reserved
Reserved
0.7 sec
0.8 sec
0.9 sec
Offset 02h
1 1 0
41.92
77.85
43.92
81.57
www.national.com
(RCCFG)
Bank 7,