SI2400URT-EVB Silicon Laboratories Inc, SI2400URT-EVB Datasheet - Page 7

• Manufacturer Part Number: SI2400URT-EVB
• Description: BOARD EVAL FOR SI2400 ISOMODEM
• Manufacturer: Silicon Laboratories Inc
• Series: ISOmodem®r

Specifications of SI2400URT-EVB

• Main Purpose: Telecom, Modem
• Embedded: No
• Utilized Ic / Part: SI2400
• Primary Attributes: Dual RJ-11 Connection to Phone Line, Audio Connector
• Secondary Attributes: RS-232, TTL Serial & USB Interfaces
• Processor To Be Evaluated: Si2400
• Interface Type: RS-232, USB
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Contains lead / RoHS non-compliant
• Other names: 336-1166

3.1.7. USB Interface
The USB cable connects to J5 on the motherboard and
provides both data and power. Installing a jumper on
JP5 enables the USB interface and disables the RS-232
interface. The USB interface is provided by U5. A USB
driver for this chip is available for most PC and MAC
operating systems on the CD.
Figure 3. Jumper Settings for Direct Access Interface
Rev. 0.7
3.1.8. Direct Access Interface
The motherboard supplies power through J3, J4, or
USB, power-on reset, and an RJ-11 jack for the modem.
The direct access interface, JP3, is used to connect the
motherboard to an embedded system. JP3 provides
access to all Si2400 signals available on the daughter
card. It is necessary to install a jumper on JP8 to disable
both the RS-232 and USB interface and prevent signal
contention. Leave the jumper between JP7 pins 1 and
2. Figure 3 illustrates the jumper settings required for
the direct access mode using the motherboard.
Si2400URT-EVB
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