SMSC USB2507 Manuel D’Utilisation
Integrated USB 2.0 Compatible 7-Port Hub
Datasheet
SMSC USB2507
19
Revision 2.3 (08-27-07)
DATASHEET
5.2.1.1
Implementation Characteristics
Please refer to the MicroChip 24AA00 DataSheet for Protocol and Programming specifics.
5.2.1.2
Pull-Up Resistor
The Circuit board designer is required to place external pull-up resistors (10K
Ω 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.
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
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 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
BUS
(HEX)
DESCRIPTION
VID
1:0
2
0424
0424
Vendor ID (assigned by USB-IF).
PID
3:2
2
2507
2507
Product ID (assigned by Manufacturer).
DID
5:4
2
0000
0000
Device ID (assigned by Manufacturer).
Config Data
Byte 1
Byte 1
6
1
98
1C
Configuration data byte #1 for Hub options.
Config Data
Byte 2
Byte 2
7
1
10
90
Configuration data byte #2 for Hub options.
Non
Removable
Device
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).
devices (this is used only when Hub is part of
a compound device).
Port Disable
Self-Powered
Self-Powered
9
1
00
00
Selects the ports that will be permanently
disabled
disabled
Port Disable
Bus-Powered
Bus-Powered
A
1
00
00
Selects the ports that will be permanently
disabled
disabled
Max Power
Self-Powered
Self-Powered
B
1
01
01
Max Current for this configuration (expressed
in 2mA units).
in 2mA units).
Max Power
Bus-Powered
Bus-Powered
C
1
64
64
Max Current for this configuration (expressed
in 2mA units).
in 2mA units).
Hub Controller
Max Current
Self-Powered
Max Current
Self-Powered
D
1
01
01
Max Current (expressed in 2mA units).