Hi team,
My customer is using UB935 and UB936 and, now they are trying to test BER by BIST.
But, they cannot start BIST(0xD[5] stays "0") even though the setting seems to be okay.
Could you review their setting and give us an advice?
BTW, UB935's datasheet mentions as below. Cannot BIST is used in non synchronous external clock mode?
"BIST mode is enabled by BIST configuration register 0xB3[0] on the deserializer and should be run in the
synchronous mode."
Ser: UB935(Camera module)
Mode: Non synchronous external clock mode
Refclk: 42MHz
Datarate: 3.36Gbps
Des: UB936
Use RX0 port
BIST_OUT_MODE = 10 (Outputs enabled during BIST)
BIST_PIN_CONFIG = 0 (Bist configured through bits 2:0 in this register)
BIST_CLOCK_SOURCE = 00 (External/System clock)
BIST_EN = 1 (Enabled)
then
Check SER_BIST_ACT register bit 0xD0[5]
Regards,
