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USB5534B Datenblatt(PDF) 31 Page - Microchip Technology

Teilenummer USB5534B
Bauteilbeschribung  4-Port SS/HS USB Hub Controller
PDF  73 Pages
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Hersteller  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

USB5534B Datenblatt(HTML) 31 Page - Microchip Technology

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 2012 - 2015 Microchip Technology Inc.
DS00001681C-page 31
USB5534B
5.5.4
SPECIAL HUB COMMANDS
Below is a list of the extended commands and the code used to execute them.
The extended commands provide access to the status of the device. From these registers a SMBus controller can see
the connection status of the hub, communicate with the UCS1000, and change the SMBus address if desired. When
the extended command is sent the hub will interpret the memory starting at offset 00h as follows:
TABLE 5-1:
SPECIAL SMBUS COMMANDS
Operation
OPCODE
Description
Reboot
9936h
Reboot internal MCU.
Configuration Register
Access
9937h
Read and Write Configuration Registers
Extended Command
993Eh
Execute Extended Status Commands
USB Attach
AA55h
Enter Configuration Stage
USB Attach with SMBus
Access
AA56h
Enter Configuration Stage with SMBus Access Enabled
TABLE 5-2:
EXTENDED COMMANDS
Command
Code
Set Address
00h
Get Default Address
01h
Get Hub Info
02h
Get UCS Port Mask
03h
Port Connect Status
80h
Port Power Status
81h
Port Force Disable
82h
Port DP/DM Status
83h
UCS Byte Read
84h
UCS Byte Write
85h
UCS Block Read
86h
UCS Block Write
87h
TABLE 5-3:
MEMORY FORMAT FOR EXTENDED HUB COMMAND
RAM Address
Description
Notes
0000h
Command
Code of the extended command to execute.
0001h
Status
Always write 0 to this register, it will be updated after the command is exe-
cuted with the status.
0002h
Data1
The first byte of data to write to or read from when executing the command.
...
...
...
0004h+N
DataN
The Nth byte of data to write to or read from when executing the command.



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