JAJSF25C March 2018 – January 2023 DS90UB936-Q1
PRODUCTION DATA
RX port specific register. The FPD-Link III Port Select register 0x4C configures which unique RX port registers can be accessed by I2C read and write commands.
BIT | FIELD | TYPE | DEFAULT | DESCRIPTION |
---|---|---|---|---|
7:6 | FREQ_HYST | R/W | 0x3 | Frequency Detect Hysteresis The Frequency detect hysteresis setting allows ignoring minor fluctuations in frequency. A new frequency measurement will be captured only if the measured frequency differs from the current measured frequency by more than the FREQ_HYST setting. The FREQ_HYST setting is in MHz. |
5:4 | FREQ_STABLE_THR | R/W | 0x0 | Frequency Stable Threshold The Frequency detect circuit can be used to detect a stable clock frequency. The Stability Threshold determines the amount of time required for the clock frequency to stay within the FREQ_HYST range to be considered stable: 00 : 40 µs 01 : 80 µs 10 : 320 µs 11 : 1.28 ms |
3:0 | FREQ_LO_THR | R/W | 0x5 | Frequency Low Threshold Sets the low threshold for the Clock frequency detect circuit in MHz. This value is used to determine if the clock frequency is too low for proper operation. |