pc87591l-n05 National Semiconductor Corporation, pc87591l-n05 Datasheet - Page 173

• Manufacturer Part Number: pc87591l-n05
• Description: Lpc Mobile Embedded Controller
• Manufacturer: National Semiconductor Corporation

Revision 1.2
4.0 Embedded Controller Modules
ADC Parameters Index Register (ADCPINX)
This register holds an index to the ADC parameters registers. Use it while initializing the ADC (see “Initializing the ADC” on
page 168 for more details). ADCPINX is cleared (00
Location: 00 FF2A
Type:
ADC Parameters Data Register (ADCPD)
This register enables access to the ADC parameters registers. Use it while initializing the ADC (see “Initializing the ADC” on
page 168 for more details).
Location: 00 FF2C
Type:
Bit
Name
Reset
Bit
Name
15-0 Parameter Data. The register is used to access the ADC parameters register that the Index register (ADCPINX)
2-0
7-3
7-0
Bit
Bit
Bit
VOLDLY (Voltage Channel Delay). Compensates for the settling time of the input interface and externally added
filter (if used). The conversion of the VOLDLY value to delay, in terms of ADC clock cycles, is shown below. To
calculate the required value and the resulting delay time, see Section 4.11.3 on page 167 and “Calculating the
Voltage Channel Delay” on page 177.
VOLDLY Value
Bits
2 1 0:
0 0 1:
0 1 0:
0 1 1:
1 0 0:
1 0 1:
1 1 0:
1 1 1:
Other:
Reserved (must be set to ‘00010’).
Index. Defines which parameter register is being accessed by the ADCPD register. Use only the Index values
recommended by National Semiconductor. Accessing other Index values may cause the ADC module to behave
in an undefined manner.
points to.
Writing 01
R/W
R/W
15
16
16
16
7
0
to index 00
14
Voltage Channel Delay (ADC Clock Cycles)
4
8
16
32
64
128
256 (default)
Reserved
13
16
6
0
locks the parameter data registers from any further writes until the next reset.
12
11
5
0
(Continued)
10
16
) on reset.
9
Description
Description
Description
173
Parameter Data
4
0
8
Index
7
3
0
6
5
2
0
4
3
1
0
2
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1
0
0
0