diff options
| -rw-r--r-- | usrp/doc/inband-signaling-usb | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/usrp/doc/inband-signaling-usb b/usrp/doc/inband-signaling-usb index 420ba753e..d49daed47 100644 --- a/usrp/doc/inband-signaling-usb +++ b/usrp/doc/inband-signaling-usb @@ -10,7 +10,7 @@ format across the USB. +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ - |O|U|E|D| mbz | Chan | mbz | Tag | Payload Len | + |O|U|D|S|E| mbz | Chan | mbz | Tag | Payload Len | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Timestamp | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ @@ -46,14 +46,19 @@ format across the USB. when the FPGA runs out of samples, and it's not between bursts. See the "End of Burst flag" below. + D Dropped Packet Flag: Set in an IN packet if the FPGA + discarded an OUT packet because its timestamp had already + passed. + + S Start of Burst Flag: Set in an OUT packet if the data is the + first segment of what is logically a continuous burst of data. + Must be zero in IN packets. + E End of Burst Flag: Set in an OUT packet if the data is the last segment of what is logically a continuous burst of data. Must be zero in IN packets. Underruns are not reported when the FPGA runs out of samples between bursts. - D Dropped Packet Flag: Set in an IN packet if the FPGA - discarded an OUT packet because its timestamp had already - passed. Chan 5-bit logical channel number. Channel number 0x1f is reserved for control information. See "Control Channel" below. Other |