IDTECH Augusta - USB Descriptors and Formats

Copyright 2019 ID TECH. All rights reserved. Document Number: 80145503-001
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<TaskID><R><NoFunc><FuncID>
Where:
<NoFunc> is number of properties to review in a task. Now only support <NoFunc> = 1
<TaskID><R><00> allows host to review all properties in a task.
<TaskID><R><01><FuncID> allows host to review setting for a property.
Response:
<ACK><TaskID><NoFunc><FuncBLOCK> or (fail)
<NAK><ErrorCode1><ErrorCode2>
<TaskID> is needed for each <FuncID> in review command.
Note that in contrast to the ITP format, in NGA protocol the LRC value does not come at the end, and
does not include STX, length bytes, nor ETX in its calculated XOR value.
8.3. USB Descriptors
Following are the USB descriptors used by Augusta. The detailed information should be adjusted and
tested as need be during implementation.
USB-HID
Device Descriptor:
Field
Value (Hex)
Description (ACR38)
Length
12
Length = 18
Des type
01
BCD USB
00 02
USB 2.0
Device Class
00
Not specific
Sub Class
00
Unused
Device Protocol
00
Unused
Max Packet Size
40
Max Packet Size is 64 bytes
VID
0A CD
PID
38 20 (39 20
for SRED)
BCD Device Release
00 01
i-Manufacture
01
i-Product
02
i-Serial-Number
03
# Configuration
01
Configuration Descriptor:
Field
Value (Hex)
Description
Length
09
Des type
02
Total Length
29 00
No. Interface
01