ZHCSCX0D January 2014 – October 2017 ADC12J1600 , ADC12J2700
PRODUCTION DATA.
The short-transport test mode is available when the device is operated in DDC bypass mode (decimation = 1). The short transport pattern has a length of one frame. Table 36 lists the formula followed by each sample of the pattern.
BIT | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
~LID | LID | SID+1 |
LID is the lane ID (0 to 7) and SID is the sample number within the frame (0 to 4). The entire pattern has a length of one frame and is listed in Table 37.
LANE (CONVERTER ID) | SAMPLE NUMBER (SID) | |||||
---|---|---|---|---|---|---|
0 | 1 | 2 | 3 | 4 | ||
0 | 0xF01 | 0xF02 | 0xF03 | 0xF04 | 0xF05 | |
1 | 0xE11 | 0xE12 | 0xE13 | 0xE14 | 0xE15 | |
2 | 0xD21 | 0xD22 | 0xD23 | 0xD24 | 0xD25 | |
3 | 0xC31 | 0xC32 | 0xC33 | 0xC34 | 0xC35 | |
4 | 0xB41 | 0xB42 | 0xB43 | 0xB44 | 0xB45 | |
5 | 0xA51 | 0xA52 | 0xA53 | 0xA54 | 0xA55 | |
6 | 0x961 | 0x962 | 0x963 | 0x964 | 0x965 | |
7 | 0x871 | 0x872 | 0x873 | 0x874 | 0x875 |
The long-transport test mode is available in all DDC modes (decimation > 1). Patterns are generated in accordance with the JESD204B standard and are different for each output format.
Table 38 lists one example of the long transport test pattern:
TIME → | ||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CHAR NO. | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 |
Lane 0 | 0x0003 | 0x0002 | 0x8000 | 0x8000 | 0x8000 | 0x8000 | 0x8000 | 0x8000 | 0x8000 | 0x8000 | 0x0003 | |||||||||||
Lane 1 | 0x0002 | 0x0005 | 0x8000 | 0x8000 | 0x8000 | 0x8000 | 0x8000 | 0x8000 | 0x8000 | 0x8000 | 0x0002 | |||||||||||
Lane 2 | 0x0004 | 0x0002 | 0x8001 | 0x8000 | 0x8000 | 0x8000 | 0x8000 | 0x8000 | 0x8000 | 0x8000 | 0x0004 | |||||||||||
Lane 3 | 0x0004 | 0x0004 | 0x8000 | 0x8001 | 0x8000 | 0x8000 | 0x8000 | 0x8000 | 0x8000 | 0x8000 | 0x0004 | |||||||||||
Frame n |
Frame n + 1 |
Frame n + 2 |
Frame n + 3 |
Frame n + 4 |
Frame n + 5 |
Frame n + 6 |
Frame n + 7 |
Frame n + 8 |
Frame n + 9 |
Frame n + 10 |
If multiple devices are all programmed to the transport layer test mode (while JESD_EN = 0), then JESD_EN is set to 1, and then SYSREF is used to align the LMFC of the devices, the patterns will be aligned to the SYSREF event (within the skew budget of JESD204B). For more details see JESD204B, section 5.1.6.3.