SNLS589B September 2016 – July 2018 DS90UB960-Q1
|7:4||SDA_OUTPUT_SETUP||R/W||0x1||Remote Ack SDA Output Setup
When a Control Channel (remote) access is active, this field configures setup time from the SDA output relative to the rising edge of SCL during ACK cycles. Setting this value will increase setup time in units of 640ns. The nominal output setup time value for SDA to SCL when this field is 0 is 80ns.
|3:2||SDA_OUTPUT_DELAY||R/W||0x0||SDA Output Delay
This field configures additional delay on the SDA output relative to the falling edge of SCL. Setting this value will increase output delay in units of 40ns. Nominal output delay values for SCL to SDA are:
|R/W||0||Speed up I2C Bus Watchdog Timer
1: Watchdog Timer expires after approximately 50 microseconds
0: Watchdog Timer expires after approximately 1 second.
|R/W||0||Disable I2C Bus Watchdog Timer
When the I2C Watchdog Timer may be used to detect when the I2C bus is free or hung up following an invalid termination of a transaction. If SDA is high and no signalling occurs for approximately 1 second, the I2C bus will assumed to be free. If SDA is low and no signaling occurs, the device will attempt to clear the bus by driving 9 clocks on SCL