EVB-USB2524 Evaluation Board Revision B1

Revision 0.9 (09-28-06)

SECURITY LEVEL

SMSC EVB-USB2524

4

3 Hardware Configuration

The EVB-USB2524 has two sets of resistor jumpers. The first set selects the USB2524 configuration;

internal defaults, SMBus slave or EEPROM configuration. The second set enables dual LED mode.

3.1

USB2524 Configuration Selection

The USB2524 has three configuration pins CFG_SEL[2:0], that determines the operating mode of the USB2524. The

selection of a configuration is done with six resistor combinations shown in Table 3.1. Only three resistors are

installed to either pull up or pull down each configuration pin. Figure 3.1 shows a section of the PCB for the EVB-

USB2524 where the resistors are located.

Table 3.1 Resistor selection for USB2524 configuration

CFG_SEL2

CFG_SEL1

CFG_SEL0

Configuration

R1

R3

R6

Internal Default Configuration

3-wire port configuration

Strap options enabled

USB LED mode

R1

R3

R5

SMBus Slave Configuration

R1

R4

R6

Internal Default Configuration

4-wire port configuration

Strap options enabled

USB LED mode

R1

R4

R5

EERPOM Configuration

Note:

This is default if no jumpers are populated

on J1

R2

R3

R6

Internal Default Configuration

4-wire (edge) port configuration

Strap options enabled

Single mode LED

R2

R3

R5

Internal Default Configuration

4-wire (edge) port configuration

Dual mode LED

R2

R4

R6

Reserved

R2

R4

R5

Reserved