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Teledyne LeCroy Verification Script Engine Reference Manual
Page 18 of 115
5.2 Trace Event-dependent Set of Members
This set of members is defined and can be used only for a specific event or after calling functions that provide
values of variables:
5.2.1 USB Packet-specific Set of Members
Members of this set are valid for all USB packet events:
in.RawPacket: Bit source of the whole packet. Note: You can extract any necessary information using the
GetNBits(), NextNBits(), or PeekNBits() functions. (Refer to section 14 in the USBScriptDecodeManual.pdf.)
in.RawPacketLength: Length of the packet (in bytes).
in.Duration: Time it took to transmit the packet on the bus (VSE Time object).
in.Errors: A bitmap of packet level errors. The table below describes the current list of possible packet errors
and their bit positions in the error bitmap:
Error type
Bit position
Description
USB2 Errors:
PID_ERROR
1
Bad PID value
CRC5_ERROR
2
Bad CRC5
CRC16_ERROR
3
Bad CRC16
PACKETLEN_ERROR
4
Wrong packet length
BIT_STUFF_ERROR
5
Bit stuffing error
EOP_ERROR
6
Bad End Of Packet
BABBLE_START_ERROR
7
Babble start error
BABBLE_END_ERROR
8
Babble end (Loss Of Activity) error
FRAME_LENGTH_ERROR
9
Wrong frame length
HANDSHAKE_TIMEOUT_ERROR
10
Bad turnaroud timing or timeout
condition for handshake
INTERNAL_ERROR
11
Analyzer internal error
DATA_TOGGLE_ERROR
12
Data toggling error
MICROFRAME_ERROR
13
Bad frame or microframe number
MOD_8_ERROR
14
Last Byte Incomplete error
OTG_ERROR
15
Bad OTG Signal value
USB3 Errors. TBD.
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