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USB2503 数据表(PDF) 18 Page - SMSC Corporation

部件名 USB2503
功能描述  Integrated USB2.0 Compatible 3-Port Hub
PDF  43 Pages
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制造商  SMSC [SMSC Corporation]
网页  http://www.smsc.com
标志 SMSC - SMSC Corporation

USB2503 数据表(HTML) 18 Page - SMSC Corporation

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Integrated USB 2.0 Compatible 3-Port Hub
Datasheet
Revision 2.1 (12-06-06)
18
SMSC USB2503/USB2503A
DATASHEET
5.2.1.3
I2C EEPROM Slave Address
Slave address is 1010000.
Note:
10-bit addressing is NOT supported.
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
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
2503
2503
Product ID (assigned by Manufacturer).
DID
5:4
2
0000
0000
Device ID (assigned by Manufacturer).
Config Data
Byte 1
6
1
98
1C
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.



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