GX4002 Datasheet, PDF (40/74 Pages) Gennum Corporation – Dynamic on-chip power management control

Register Name
ADC_REG7
ADC_REG8
Register
Address^d
149
150
Parameter Name
ADCOFFSETLO
ADCOFFSETHI
Bit Position
7:0
7:0
Access
RW
RW
Reset Value^b
00000000
00000000
Valid Range^d
Function
0-255
0-255
ADC offset LSB, unsigned binary.
ADC offset MSB, unsigned binary.
The following registers are used to configure the ADC:
Register Name
Register
Address^d
ADC_REG0
142
ADC_REG2
143
Parameter Name
ADCRESET
ADCAUTOCONVEN
ADCJUSTLSB
ADCOFFMODE
ADCRESOLUTION
ADCCLKRATE
Bit Position
0:0
1:1
2:2
3:3
2:0
5:3
Access
RW
RW
RW
RW
RW
RW
Reset Value^b
1
1
1
0
001
0101
Valid Range^d
Function
0-1
Reset for the ADC.
0-1
When HIGH, enables auto conversion.
Set LOW for manual.
0-1
When HIGH, justify towards LSB. LOW
justifies towards MSB.
When LOW, offset is subtracted from the
ADC output. When HIGH, offset is added
to the ADC output.
0-1
NOTE: When HIGH, ADCOFFSETHI[7] is
sign and rest of the bits are magnitude.
A sign value of 1 represents negative
numbers.
0-7
ADC resolution control.
0-15
ADC clock divide ratio.
Table 3-4: ADC Resolution
ADCRESOLUTION
000
001
010
011
100
101
110
111
ADC Resolution (bits)
4
6
8
10
12
14
16
Unused
Number of ADC Clocks
for Conversion
15
63
255
1023
4095
16383
65535
Unused
Table 3-5: ADC Clock Rate
ADCCLKRATE[2:0]
000
001
ADC Sampling Clock Rate
(MHz)
1
1.6
GX4002 2x2 14.025Gb/s Crosspoint Switch with Trace
Equalization and Output De-Emphasis
Data Sheet
55972 - 0
March 2012
ADC Conversion Time
(μs) Res = 10 bits
1023
651
40 of 74
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