Method for providing read data flow control or error reporting using a read data strobe

A host device comprising:

• a processing unit;
• and
• a host interface coupled to the processing unit, the host interface configured at least to:
• program a first predetermined latency of a plurality of predetermined latencies;
• count a counter value for receipt of a read data strobe signal from a peripheral device;
• capture valid data when the counter value is not above the first predetermined latency when the read data strobe signal is received;
• and
• send an error response to the processing unit when the counter value is above the first predetermined latency before the read data strobe signal has been received.

A system comprising:

• a peripheral device;
• an interface bus coupled to the peripheral device;
• and
• a host device comprising a processing unit and a host interface that is coupled to the interface bus, the host interface configured at least to:
• program a first predetermined latency of a plurality of predetermined latencies;
• count a counter value for receipt of a read data strobe signal from the peripheral device;
• capture valid data when the counter value is not above the first predetermined latency when the read data strobe signal is received;
• and
• send an error response to the processing unit when the counter value is above the first predetermined latency before the read data strobe signal has been received.