Hello,
I am evaluating the serializer/deserializer for an interface to an external radio tuner system providing an interface for command/response, I2S audio, and AM/FM/DAB IQ. I have quite a few question after reading the datasheet that I'm looking to clarify in order to be confident the system will work as expected.
- Serializer: What is the input capacitance of the I2S pins?
- Serializer: What is the input capacitance of the DIN pins?
- Can the link operate properly without a HS/VS/DE signal input toggling at the appropriate 130 PCLK ratios?
- There is a note in the serializer Datasheet that “Note: The bit rates of any I2S bits must maintain one fourth of the PCLK rate.”
- Does this imply the I2S must be synchronous with the PCLK?
- If we intend to send both I2S and IQ are we violating this requirement?
- 48 ksps I2S = 1.536 MHz I2S CLK
- 744ksps -> 2048ksps IQ = 11.904 MHz -> 40.960 MHz PCLK
- What is the maximum size for a single I2C write transaction (bytes between start and stop), when sent over the control channel?
- What is the maximum size for a single I2C read transaction (bytes between start and stop), when sent over the control channel?
- Can the I2C transaction be configured to match our expected format for the devices? The write seems to be fine, but the read has an empty write beforehand as shown…and we would provide the NACK at the end rather than the ACK as shown.
- Requirement for I2C with my devices:
- Would it be possible to get an idea on volume pricing for the serializer / deserializer?
Thanks.
