参数资料
型号: ISP1520BD,557
厂商: NXP SEMICONDUCTORS
元件分类: 总线控制器
英文描述: UNIVERSAL SERIAL BUS CONTROLLER, PQFP64
封装: 10 X 10 MM, 1.40 MM HEIGHT, PLASTIC, MS-026, SOT-314-2, LQFP-64
文件页数: 24/54页
文件大小: 288K
代理商: ISP1520BD,557
ISP1520_4
Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Product data sheet
Rev. 04 — 28 April 2006
29 of 53
Philips Semiconductors
ISP1520
Hi-Speed USB hub controller
11.3.6 Get port status
This request returns 4 B of data. The rst word contains port status bits (wPortStatus),
and the next word contains port status change bits (wPortChange). The contents of
wPortStatus is given in Table 31, and the contents of wPortChange is given in Table 32.
17
overcurrent indicator change
0
no change in overcurrent
1
overcurrent status has changed
18 to 31
reserved
0
-
Table 30.
Get hub status response …continued
Bit
Function
Value
Description
Table 31.
Get port status response (wPortStatus)
Bit
Function
Value
Description
0
current connect status
0
no device is present
1
a device is present on this port
1
port enabled or disabled
0
port is disabled
1
port is enabled
2
suspend
0
port is not suspended
1
port is suspended
3
overcurrent indicator
0
no overcurrent condition exists
1
an overcurrent condition exists
4
reset
0
reset signaling is not asserted
1
reset signaling is asserted
5 to 7
reserved
0
-
8
port power
0
port is in the powered-off state
1
port is not in the powered-off state
9
low-speed device attached
0
full-speed or high-speed device is
attached
1
low-speed device is attached
10
high-speed device attached
0
full-speed device is attached
1
high-speed device is attached
11
port test mode
0
not in port test mode
1
in port test mode
12
port indicator control
0
displays default colors
1
displays software controlled color
13 to 15
reserved
0
-
Table 32.
Get port status change response (wPortChange)
Bit
Function
Value
Description
0
connect status change
0
no change in the current connect status
1
change in the current connect status
1
port enable or disable change
0
port is enabled
1
port is disabled
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