JAJSIB2 December 2019 ADC3421-Q1
PRODUCTION DATA.
7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
CHC TEST PATTERN | CHD TEST PATTERN | ||||||
R/W-0h | R/W-0h |
LEGEND: R/W = Read/Write; -n = value after reset |
Bit | Field | Type | Reset | Description |
---|---|---|---|---|
7-4 | CHC TEST PATTERN | R/W | 0h | These bits control the test pattern for channel C after the TEST PATTERN EN bit is set.
0000 = Normal operation 0001 = All 0's 0010 = All 1's 0011 = Toggle pattern: data alternate between 101010101010 and 010101010101. 0100 = Digital ramp: data increment by 1 LSB every clock cycle from code 0 to 4095. 0110 = Custom pattern: output data are the same as programmed by the CUSTOM PATTERN register bits. 1000 = Deskew pattern: data are AAAh. 1010 = PRBS pattern: data are a sequence of pseudo random numbers. 1011 = 8-point sine wave: data are a repetitive sequence of the following eight numbers that form a sine-wave: 0, 599, 2048, 3496, 4095, 3496, 2048, 599. Others = Do not use |
3-0 | CHD TEST PATTERN | R/W | 0h | These bits control the test pattern for channel D after the TEST PATTERN EN bit is set.
0000 = Normal operation 0001 = All 0's 0010 = All 1's 0011 = Toggle pattern: data alternate between 101010101010 and 010101010101. 0100 = Digital ramp: data increment by 1 LSB every clock cycle from code 0 to 4095. 0110 = Custom pattern: output data are the same as programmed by the CUSTOM PATTERN register bits. 1000 = Deskew pattern: data are AAAh. 1010 = PRBS pattern: data are a sequence of pseudo random numbers. 1011 = 8-point sine wave: data are a repetitive sequence of the following eight numbers that form a sine-wave: 0, 599, 2048, 3496, 4095, 3496, 2048, 599. Others = Do not use |