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USB5533B 数据表(PDF) 34 Page - Microchip Technology

部件名 USB5533B
功能描述  3-Port SS/HS USB Hub Controller
PDF  71 Pages
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制造商  MICROCHIP [Microchip Technology]
网页  http://www.microchip.com
标志 MICROCHIP - Microchip Technology

USB5533B 数据表(HTML) 34 Page - Microchip Technology

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USB5533B
DS00001680C-page 34
 2012 - 2015 Microchip Technology Inc.
5.5.4.7
Port Power Status (81h)
Data1 of the memory is written by the SMBus master and after the command is executed Data 2-6 will be populated
with the status of each port. A ‘1’ means the port power is enabled, a ‘0’ means the port power is disabled.
Data1 is a port mask where each bit represents the port status to return. Bit 0 is the upstream port, bit 1 is the down-
stream port 1, etc.
5.5.4.8
Port Force Disable (82h)
Data1 of the memory is the port mask and Data 2-6 is the port disable state requested.
Data1 is a port mask where each bit represents the port status to return. Bit 0 is the upstream port, bit 1 is the down-
stream port 1, etc.
The port disable byte will be interpreted as follows:
5.5.4.9
Port DP/DM Status (83h)
Data1 of the memory is written by the SMBus master and after the command is executed Data 2-6 will be populated
with the status of each port.
Data1 is a port mask where each bit represents the port status to return. Bit 0 is the upstream port, bit 1 is the down-
stream port 1, etc.
The port DP/DM status byte can be interpreted as follows:
1
USB2_CONNECT
R
0 = No USB2 connection detected. (HS/FS/LS)
1 = USB2 connection detected.
0
USB3_CONNECT
R
0 = No USB3 connection detected.
1 = USB3 connection detected.
TABLE 5-10:
HUB INFORMATION
PORT_DISABLE
(0X82)
Port Disable
Bit
Name
R/W
Description
7
OVERWRITE
W
If this bit is 1 then the data in bits 2:0 will be overwritten.
6:3
Reserved
W
Reserved
2
FORCE_OFF
W
0 = Port Power controlled by hub.
1 = Port Power forced off.
1
USB3_TERM_DIS
W
0 = USB3 Terminations controlled by hub.
1 = USB3 Terminations disabled.
0
USB2_TERM_DIS
W
0 = USB2 Terminations controlled by hub.
1 = USB2 Terminations disabled.
TABLE 5-11:
PORT DP/DM STATUS
PORT_DPDM
(0X83)
Port DP/DM Status
Bit
Name
R/W
Description
7:2
Reserved
W
Reserved
1
FS_DM
W
0 = DM line is below the FS threshold.
1 = DM line is above the FS threshold (LS idle state)
0
FS_DP
W
0 = DP line is below the FS threshold.
1 = DP line is above the FS threshold. (FS idle state)
TABLE 5-9:
HUB INFORMATION (CONTINUED)
PORT_CONNECT
(0X80)
Port Connect Status
Bit
Name
R/W
Description



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