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Flow Control
3.6.2.7 USB Configuration
The USB Configuration menu helps read USB information and configures USB settings.
Item
USB transfer time-out
Device reset time-out
Device power-up delay
Mass Storage Devices
57600
115200[Default]
None[Default]
Hardware RTS/CTS
Software Xon/Xoff
Options
1 sec
5 sec
10 sec
20 sec[Default]
10 sec
20 sec[Default]
30 sec
40 sec
Auto[Default]
Manual
Auto[Default]
Floppy
Forced FDD
Hard Disk
CD-ROM
HPS-246U4A/HPS-246UTA Quick Reference Guide 51
Quick Reference Guide
other side. Long or noisy lines may
require lower speeds.
Flow control can prevent data loss from
buffer overflow. When sending data, if
the receiving buffers are full, a 'stop'
signal can be sent to stop the data flow.
Once the buffers are empty, a 'start'
signal can be sent to re-start the flow.
Hardware flow control uses two wires to
send start/stop signals.
Description
The time-out value for Control, Bulk, and
Interrupt transfers.
USB mass storage device Start Unit command
time-out.
Maximum time the device will take before it
properly reports itself to the Host Controller.
'Auto' uses default value: for a Root port it is
100ms, for a Hub port the delay is taken form
Hub descriptor.
Mass storage device emulation type. 'AUTO'
enumerates devices according to their media
format. Optical drives are emulated as
'CDROM', drives with no media will be
emulated according to a drive type.
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