Datasheet

12 | Keysight | Serial Bus Options for InfiniiVision X-Series Oscilloscopes - Data Sheet
USB 2.0 low- and full-speed
USB input source (D+ & D-) Analog channels 1, 2, 3 or 4
Digital channels D0-D15
Speed Low (1.5 Mb/s) and Full (12 Mb/s)
Triggering Start of packet (SOP)
End of packet (EOP)
Suspend – when bus is idle for > 3 ms
Resume – when exiting an idle state > 10 ms
Reset – when SE0 is > 10 ms
Token packet with specified content
Data packet with specified content
Handshake packet with specified content
Special packet with specified content
All errors – any of the below error conditions
PID error – if packet type field does not match check field
CRC5 error – if 5 bit CRC error is detected
CRC16 error – if 16 bit CRC error is detected
Glitch error – if two transitions occur in half a bit time
Bit stuff error – if >6 consecutive “ones” are detected
SE1 error – if SE1 > 1 bit time
Hardware-based decode
– Base format Hex, Binary, ASCII or Decimal data decode
– Token packets (excluding SOF, 3 bytes) PID (yellow, “OUT”, “IN”, “SETUP”, “PING”)
PID Check (yellow when valid, red when error detected) – numeric value
Address (blue, 7 bits)
Endpoint (green, 4 bits)
CRC (blue when valid, red when error detected, 5 bits)
– Token packets (SOF, 3 bytes) PID (yellow, “SOF”)
PID Check (yellow when valid, red when error detected, 5 bits)
Frame (green, 11-bits) – the frame number
CRC (blue when valid, red when error detected, 5 bits)
– Data packets (3 to 1027 bytes) PID (yellow, “DATA0”, “DATA1”, DATA2”, “MDATA”)
PID Check (yellow when valid, red when error detected, 16 bits)
– Handshake packets (1 byte) PID (yellow, “ACK”, “NAK”, “STALL”, “NYET”, “PRE”, “ERR”)
PID Check (yellow when valid, read when error detected) – numeric value
Hub Addr (green, 7 bits)
SC (blue, 1 bit)
Port (green, 7 bits)
S & E|U (blue, 2 bits)
ET (green, 2 bits)
CRC (blue when valid, red when error detected, 5 bits
– Multi-bus analysis USB low-full-speed plus one other serial bus (including another USB bus)
Specifications/Characteristics (Continued)