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ISP1122ABD Arkusz danych(PDF) 18 Page - NXP Semiconductors

Numer części ISP1122ABD
Szczegółowy opis  Universal Serial Bus stand-alone hub
PDF  48 Pages
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Producent  PHILIPS [NXP Semiconductors]
Strona internetowa  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

ISP1122ABD Arkusz danych(HTML) 18 Page - NXP Semiconductors

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Philips Semiconductors
ISP1122A
USB stand-alone hub
Preliminary specification
Rev. 01 — 27 March 2000
18 of 48
9397 750 06986
© Philips Electronics N.V. 2000. All rights reserved.
9.4 Hub responses
This section describes the hub responses to requests from the USB host.
9.4.1
Get device status
The hub returns 2 bytes, see Table 16.
9.4.2
Get configuration
The hub returns 1 byte, see Table 17.
9.4.3
Get interface status
The hub returns 2 bytes, see Table 18.
9.4.4
Get hub status
The hub returns 4 bytes, see Table 19.
Table 16: Get device status response
Bit #
Function
Value
Description
0
self-powered
0
bus-powered
1
self-powered
1
remote wake-up
0
no remote wake-up
1
remote wake-up enabled
2 to 15
reserved
0
-
Table 17: Get configuration response
Bit #
Function
Value
Description
0
configuration value
0
device not configured
1
device configured
1 to 7
reserved
0
-
Table 18: Get interface status response
Bit #
Function
Value
Description
0 to 15
reserved
0
-
Table 19: Get hub status response
Bit #
Function
Value
Description
0
local power source
0
local power supply good
1
local power supply lost
1
overcurrent indicator
0
no overcurrent condition
1
hub overcurrent condition detected
2 to 15
reserved
0
-
16
local power status change
0
no change in local power status
1
local power status changed
17
overcurrent indicator change 0
no change in overcurrent condition
1
overcurrent condition changed
18 to 31
reserved
0
-



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