Integrated USB 2.0 Compatible 7-Port Hub
Datasheet
5.2.1.1
5.2.1.2
Implementation Characteristics
Please refer to the MicroChip 24AA00 DataSheet for Protocol and Programming specifics.
Pull-Up Resistor
The Circuit board designer is required to place external pull-up resistors (10KΩ recommended) on the
SDA/SMBDATA & SCL/SMBCLK/CFG_SELO lines (per SMBus 1.0 Specification, and EEPROM
manufacturer guidelines) to Vcc in order to assure proper operation.
5.2.1.3
I2C EEPROM Slave Address
Slave address is 1010000.
Note: 10-bit addressing is NOT supported.
5.2.2
5.2.3
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).
EEPROM DATA
Table 5.1 User-Defined Descriptor Data
DEFAULT
CFG
SELF
DEFAULT
CFG
BUS
(HEX)
BYTE
MSB:
LSB
SIZE
(BYTES)
FIELD
(HEX)
DESCRIPTION
VID
PID
1:0
3:2
2
2
0424
2507
0424
2507
Vendor ID (assigned by USB-IF).
Product ID (assigned by Manufacturer).
DID
5:4
6
2
1
0000
98
0000
1C
Device ID (assigned by Manufacturer).
Config Data
Byte 1
Configuration data byte #1 for Hub options.
Config Data
Byte 2
7
8
1
1
10
00
90
00
Configuration data byte #2 for Hub options.
Non
Removable
Device
Defines the ports that contain attached
devices (this is used only when Hub is part of
a compound device).
Port Disable
Self-Powered
9
A
B
C
D
1
1
1
1
1
00
00
01
64
01
00
00
01
64
01
Selects the ports that will be permanently
disabled
Port Disable
Bus-Powered
Selects the ports that will be permanently
disabled
Max Power
Self-Powered
Max Current for this configuration (expressed
in 2mA units).
Max Power
Bus-Powered
Max Current for this configuration (expressed
in 2mA units).
Hub Controller
Max Current
Self-Powered
Max Current (expressed in 2mA units).
SMSC USB2507
Revision 2.3 (08-27-07)
DATA1S9HEET
SMSC [ SMSC CORPORATION ]
