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C0603X7R6R3-224K Datasheet(PDF) 2 Page - Silicon Laboratories |
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C0603X7R6R3-224K Datasheet(HTML) 2 Page - Silicon Laboratories |
2 / 36 page Si2493/57/34/15/04 Global ISOmodem-EVB 2 Rev. 0.7 1. Si2493/57/34/15/04-EVB Setup and Evaluation This section explains how to set up the Si2493/57/34/ 15/04-EVB for evaluation as an RS-232 or USB interface modem. Jumper settings, power connection, PC/terminal connections, and terminal program configuration settings are given. The initial modem setup after power is applied as well as a basic tutorial on modem operation are provided. Si2493/57/34/15/04- EVB configurations for evaluating additional features are discussed separately. See the Si2493/57/34/15 or Si2404 data sheets and “AN93: Si2493/57/34/15/04/04 Modem Designer’s Guide” for complete details. 1.1. Si2493/57/34/15/04-EVB Quick Start— RS-232 Interface 1. Set jumpers according to Figure 1, but change J6 to the arrangement shown in Figure 3 if an FS ISOmodem package is used. 2. Connect: DB-9 to PC COM 1 (with a pass-through cable). RJ-11 to phone line or CO simulator. 9 V ac adaptor (or USB cable). 3. Bring up: Turn on power to modem. Autobaud automatically adjusts modem DTE speed and protocol. 4. Type “AT” followed by a carriage return. Should echo “AT” and then an “OK”. 1.2. Si2493/57/34/15/04-EVB Quick Start— USB Interface 1. Set jumpers according to Figure 3, but change J6 to the arrangement shown in Figure 3 if an FS ISOmodem package is used. 2. Connect: USB cable to PC RJ-11 to phone line or CO simulator 3. Download USB driver for your operating system from the CD supplied with the evaluation board. 4. Install driver. 5. Bring up. Reset the modem. Autobaud automatically adjusts modem DTE speed and protocol. 6. Type “AT” followed by a carriage return. Should echo “AT” and then an “OK”. 1.3. Motherboard and Daughter Card Configuration The EVB consist of a motherboard that takes a plug in daughter card. The motherboard can be configured in a variety of ways that are explained below and are managed via jumpers. The daughter card contains both the modem system side and the isolated line interface (DAA). The daughter card comes preconfigured and functional although the user may decide to change some operating options such as the type of crystal used with the modem chip or the type of control signals used, i.e. UART vs parallel. These features must be managed by changing strapping resistors soldered down to the daughter card and by changing parts associated with the crystal. These possible changes are explained below. 1.3.1. Motherboard Configuration Check all the jumper setting on the S2493/57/34/15/04- EVB before applying power. The standard factory setting for the modem in a 24-pin FT package are shown in the figure below. This setup configures the modem for RS232 serial operation with autobaud enabled. Any standard terminal program configured to communicate through a PC com port can be used to communicate with the EVB. Figure 1 shows the default motherboard setup for the FT package daughter card as well as the functions of connectors and jumpers. |
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