SI2401FS10-EVB Silicon Laboratories Inc, SI2401FS10-EVB Datasheet - Page 6

• Manufacturer Part Number: SI2401FS10-EVB
• Description: BOARD EVAL SI2401 UART INTERFACE
• Manufacturer: Silicon Laboratories Inc
• Series: ISOmodem®r

Specifications of SI2401FS10-EVB

• Main Purpose: Telecom, Modem
• Embedded: No
• Utilized Ic / Part: SI2401
• Primary Attributes: Dual RJ-11 Connection to Phone Line, Audio Connector
• Secondary Attributes: RS-232, TTL Serial & USB Interfaces
• Processor To Be Evaluated: Si2401
• 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: 336-1167

Si2401FS10-EVB
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.
6
Carrier Detect
Received Data
Transmit Data
Data Terminal Ready
Signal Ground
Data Set Ready
Ready to Send
Clear to Send
Ring Indicator
Notes:
1. JP6 + JP5 jumper option.
2. JP6 Jumper option.
3. DSR connected to DTR at J1.
J1 Name
Figure 3. Jumper Settings for Direct Access Interface
Table 4. DB9 Pin Connections
J1 Symbol
RXD
DSR
TXD
DTR
RTS
CTS
CD
SG
RD
Rev. 1.1
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 Si2401 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.
J1 Pin
1
4
9
2
3
5
6
7
8
1
2
1
Si2401 Pin
Note
14
12
nc
nc
5
6
7
3
Si2401 Name
ESC/GPIO3
GND
RXD
TXD
CTS