Understanding JESD204B RX Standard Synchronization and Error Handling
Explore the key functionalities of the JESD204B RX Standard, including synchronization requests, error detection, and reporting mechanisms. Learn about synchronization upon initialization, error handling requiring re-initialization, and more for reliable data link setup in JESD204B interfaces.
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Presentation Transcript
JESD204B RX Standard ~SYNC Request and Error Notification 1
JESD204B RX Standard Section 7 The JESD204B Standard Section 7 highlighted the three main functionality of SYNCB or ~SYNC signal Request Synchronization upon initialization Synchronization request upon errors requiring re-initialization Detection of an error not requiring re-initialization 2
JESD204B Errors Minimum Required Optional Error Reporting 3
SYNC REQUEST Synchronization request upon errors requiring re-initialization ~SYNC 5 frame + 9 octets Minimum Required per JESD204B standard. Other selection depends on application requirement. TI recommends customers to evaluate their applications needs. For maximum reliability, select all of settings. 4
Error Reporting Detection of an error not requiring re-initialization ~SYNC 2 Frames Selection depends on application requirement. For instance, the selection may be all settings not selected by SYNC_REQUEST 5
JESD204B RX Standard Error Notification via Other Interfaces 6
JESD204B Section 7.6.5 Other non-JESD204B interface errors 7
0x64 to 0x6B Lane Alarms Shared alarm with standard JESD204B Link0 Level. This is the individual lane level. For reliable JESD204B bring-up, TI recommends a full JESD204B initialization upon detection of these alarms TI recommends a full JESD204B initialization upon detection of these alarms 9
SYSREF Alarms Please mask bit15-13 since these are link3 to link1 alarms. Not used. For reliable JESD204B bring-up, TI recommends a full JESD204B initialization upon detection of these alarms Link3 - not supported Link2 - not supported Link1 - typically not used Link0 - used all the time Mask in config5 Not used 10
LOS Alarms JESD short test alarm. Not used in normal operation For reliable JESD204B bring-up, TI recommends a full JESD204B initialization upon detection of these alarms 11
