MODEMDK Silicon Laboratories Inc, MODEMDK Datasheet - Page 14

• Manufacturer Part Number: MODEMDK
• Description: KIT DEV EMBEDDED MODEM
• Manufacturer: Silicon Laboratories Inc
• Type: Network Controller & Processorr

Specifications of MODEMDK

• Main Purpose: *
• Embedded: *
• Utilized Ic / Part: C8051F120
• Primary Attributes: *
• Secondary Attributes: *
• Interface Type: RS-232, RJ-11, JTAG
• Product: Modules
• For Use With/related Products: C8051F120
• 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: 336-1285

MODEM-DK
9.1. Switches and LEDs
Three switches are provided on the AB3 Modem Adapter Board. They are connected to C8051F120 GPIO (general
purpose I/O) pins through the J1 96-pin connector. Pressing SW1, SW2, or SW3 generates a logic low signal on
the port pin. See Table 1 for the port pins corresponding to each switch.
Nine LEDs are also provided on the adapter board. Two LEDS, one red and one green, are provided as general
purpose indicators. These LEDs are connected to C8051F120 GPIO pins through the J1 96-pin connector. Seven
LEDS, one red and six green, are provided as modem signal indicators. These LEDs are connected to C8051F120
GPIO pins that are used for modem signals to the Si2457 on the modem board. See Table 1 for the port pins
corresponding to each LED.
9.2. PCM Interface (JP4)
The Si2457 PCM interface is available on JP4. Table 2 lists the pin connections for JP4 designed to connect
directly to the Si3000SSI-EVB JP6.
14
JP4 Pin AB3 Board Signal Si2457 Pin Si2457 Signal
10
1
2
3
4
5
6
7
8
9
Table 2. JP4 Connector Pin Descriptions
Table 1. Target Board I/O Descriptions
Description
LED1 (green)
DCD (green)
RXD (green)
RTS (green)
TXD (green)
CTS (green)
CLKOUT
LED2 (red)
RXCLK
RESET
ESC (red)
RI (green)
TXCLK
EESD
3.3 V
3.3 V
GND
GND
GND
SW1
SW2
SW3
Rev. 0.2
6, 20
6, 20
5, 21
6, 20
5, 21
24
18
12
P3.4
P3.5
P3.6
P3.2
P3.3
P3.1
P1.1
P2.7
P0.7
P0.6
P1.0
P1.2
3
4
I/O
CLKOUT
FSYNC
RESET
VD3.3
VD3.3
GND
GND
SDO
GND
SDI