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1999 May 10 30
Philips Semiconductors Preliminary specification
Universal Serial Bus (USB) CODEC UDA1325
COMMAND SUMMARY
COMMAND NAME RECIPIENT CODING DATA PHASE
Initialization commands
Set address/enable device D0h write 1 byte
Read address/enable device D0h read 1 byte
Set endpoint enable device D8h write 1 byte
Read endpoint enable device D8h read 1 byte
Set mode device F3h write 1 byte
Data flow commands
Read interrupt register device F4h read 1 byte
Select endpoint control OUT 00h read 1 byte (optional)
control IN 01h read 1 byte (optional)
other endpoints 00h + endpoint index read 1 byte (optional)
Get endpoint status control OUT 40h read 1 byte
control IN 41h read 1 byte
other endpoints 40h + endpoint index read 1 byte
Set endpoint status control OUT 40h write 1 byte
control IN 41h write 1 byte
other endpoints 40h + endpoint index write 1 byte
Read buffer selected endpoint F0h read n bytes
Write buffer selected endpoint F0h write n bytes
Acknowledge setup selected endpoint F1h none
Clear buffer selected endpoint F2h none
Validate buffer selected endpoint FAh none
General commands
Read current frame number F5h read 1 or 2 bytes