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USB2502-HT Datenblatt(PDF) 15 Page - Microchip Technology

Teilenummer USB2502-HT
Bauteilbeschribung  2-Port USB 2.0 Hub Controller
PDF  40 Pages
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Hersteller  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

USB2502-HT Datenblatt(HTML) 15 Page - Microchip Technology

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 2007 - 2016 Microchip Technology Inc.
DS000002248A-page 15
USB2502
5.2.2
IN-CIRCUIT EEPROM PROGRAMMING
The EEPROM can be programmed via ATE by pulling RESET_N low (which tri-states the Hub’s EEPROM interface and
allows an external source to program the EEPROM).
5.2.3
EEPROM DATA
5.2.3.1
EEPROM Offset 1:0(h) - Vendor ID
5.2.3.2
EEPROM Offset 3:2(h) - Product ID
TABLE 5-1:
USER-DEFINED DESCRIPTOR DATA
Field
Byte
MSB:
LSB
Size
(Bytes)
Default
CFG
Self
(Hex)
Default
CFG
Bus
(Hex)
Description
VID
1:0
2
0424
0424
Vendor ID (assigned by USB-IF).
PID
3:2
2
2502
2502
Product ID (assigned by Manufacturer).
DID
5:4
2
0000
0000
Device ID (assigned by Manufacturer).
Config Data
Byte 1
6
1
88
0C
Configuration data byte #1 for Hub options.
Config Data
Byte 2
7
1
90
90
Configuration data byte #2 for Hub options.
Non Removable
Device
8
1
00
00
Defines the ports that contain attached devices
(this is used only when Hub is part of a
compound device).
Port Disable
Self-Powered
9
1
00
00
Selects the ports that will be permanently
disabled
Port Disable
Bus-Powered
A
1
00
00
Selects the ports that will be permanently
disabled
Max Power
Self-Powered
B
1
01
01
Max Current for this configuration (expressed
in 2mA units).
Max Power
Bus-Powered
C
1
64
64
Max Current for this configuration (expressed
in 2mA units).
Hub Controller
Max Current
Self-Powered
D
1
01
01
Max Current (expressed in 2mA units).
Hub Controller
Max Current
Bus-Powered
E
1
64
64
Max Current (expressed in 2mA units).
Power-On
Time
F
1
32
32
Time until power is stable.
Bit Number
Bit Name
Description
15:8
VID_MSB
Most Significant Byte of the Vendor ID.
7:0
VID_LSB
Least Significant Byte of the Vendor ID.
Bit Number
Bit Name
Description
15:8
PID_MSB
Most Significant Byte of the Product ID.
7:0
PID_LSB
Least Significant Byte of the Product ID.



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