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Philips Semiconductors
ISP1521
Hi-Speed USB hub controller
Product data Rev. 03 — 24 November 2004 31 of 53
9397 750 13702
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
12.3.2 Get device status
This request returns two bytes of data; see Tabl e 2 7.
12.3.3 Get interface status
The request returns two bytes of data; see Tabl e 2 8.
12.3.4 Get endpoint status
The request returns two bytes of data; see Tabl e 2 9.
12.3.5 Get hub status
The request returns four bytes of data; see Table 30.
Table 26: Get hub configuration response
Bit Function Value Description
0 configuration value 0 device is not configured
1 device is configured
1 to 7 reserved 0 -
Table 27: Get device status response
Bit Function Value Description
0 self-powered 1 self-powered
1 remote wake-up 0 disabled
1 enabled
2 to 15 reserved 0 -
Table 28: Get interface status response
Bit Function Value Description
0 to 15 reserved 0 -
Table 29: Get endpoint status response
Bit Function Value Description
0 halt 0 endpoint is not halted
1 endpoint is halted
1 to 15 reserved 0 -
Table 30: Get hub status response
Bit Function Value Description
0 local power source 0 local power supply good
1 local power supply lost (inactive)
1 overcurrent indicator 0 no overcurrent condition currently exists
1 a hub overcurrent condition exists
2 to 15 reserved 0 -
16 local power status change 0 no change in the local power status
1 local power status has changed