isp1122 NXP Semiconductors, isp1122 Datasheet - Page 19

• Manufacturer Part Number: isp1122
• Description: Isp1122 Universal Serial Bus Stand-alone Hub
• Manufacturer: NXP Semiconductors

Philips Semiconductors
9397 750 07002
Product specification
9.4.5 Get port status
The hub returns 4 bytes. The first 2 bytes contain the port status bits (wPortStatus,
see
Table
Table 20: Get port status response (wPortStatus)
Table 21: Get port status response (wPortChange)
Bit #
0
1
2
3
4
5 to 7
8
9
10 to 15
Bit #
0
1
2
3
4
5 to 15
Table
21).
20). The last 2 bytes hold the port status change bits (wPortChange, see
Function
current connect status
port enabled/disabled
suspend
overcurrent indicator
reset
reserved
port power
low-speed device attached
reserved
Function
connect status change
port enabled/disabled
change
suspend change
overcurrent indicator change 0
reset change
reserved
Rev. 03 — 29 March 2000
Value
0
1
0
1
0
1
0
1
0
1
0
0
1
0
1
0
Value
0
1
0
1
0
1
1
0
1
0
Description
no device present
device present on this port
port disabled
port enabled
port not suspended
port suspended
no overcurrent condition
overcurrent condition detected
reset not asserted
reset asserted
-
port powered off
port power on
full-speed device attached
low-speed device attached
-
Description
no change in current connect status
current connect status changed
no port error
port disabled by a port error
no change in suspend status
resume complete
no change in overcurrent status
overcurrent indicator changed
no change in reset status
reset complete
-
USB stand-alone hub
© Philips Electronics N.V. 2000. All rights reserved.
ISP1122
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