ZHCSE48B September 2015 – January 2019 ADC31JB68
PRODUCTION DATA.
The SPI may enable the following test pattern sequences. Short- and long-transport layer, RPAT, and JSPAT sequences are not supported.
Test Pattern | Description | Common Purpose |
---|---|---|
D21.5 | Data is transmitted across a normal link but ADC sampled data is replaced with D21.5 symbols, resulting in an alternating 1 and 0 pattern (101010...) on each serial lane. After enabling this pattern, the JESD204B link must be re-initialized. | Jitter or system debug |
K28.5 | Continuous K28.5 symbols are output on each serial lane. Link initialization is not possible nor required. | System debug |
Repeated ILA | ILA repeats indefinitely on each serial lane. After enabling this pattern, the JESD204B link must be reinitialized. | System debug |
Ramp | Data is transmitted across a normal link but ADC sampled data is replaced with a ramp pattern. The ramp ascends through a 16-bit range and the step is programmable. After enabling this pattern, the JESD204B link must be reinitialized. | System debug and transport layer verification |
PRBS | Standard pseudo-random bit sequences are output on each serial lane. PRBS 7/15/23 Complies with ITU-T O.150 specification and is compatible with J-BERT equipment. Link initialization is not possible nor required. | Jitter and bit error rate testing |