MODEMDK Silicon Laboratories Inc, MODEMDK Datasheet - Page 15

• 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

9.3. Modem Board Connectors (JP1, JP2)
The AB3 Modem Adapter Board motherboard connects to the Si2457FT18-EVB Modem Board through two
connectors, JP1 and JP2. JP1 is an 8x2 socket providing connection to all Si2457 digital signals and regulated
3.3 V power for the Si2457. The Si2457 digital signals appearing at JP1 (modem board interface) are LVCMOS
and TTL compatible. JP2 is a 4x1 socket providing connection between the modem board and the RJ11 phone
jack. See Table 3 and Table 4 for JP1 and JP2 pin descriptions.
9.4. Dual Telephone Jack (RJ11)
The RJ11 dual telephone jack connector provides an interface from the Si2457 modem to a phone line. Refer to
Table 5 for pin definitions.
Pin #
JP1
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9
Interface
CLKOUT
RXCLK
RESET
TXCLK
Serial
AOUT
GND
DCD
RXD
RTS
ESC
TXD
CTS
INT
VD
RI
Descriptions
Si2457 Pin
EEPROM
Interface
EECLK
EECS
EESD
Table 5. RJ11 Connector Pin Descriptions
Table 3. JP2 Connector Pin Descriptions
Table 4. JP1 Connector Pin Descriptions
P1.4 (CEX4)
P1.5 (CEX5)
P1.3 (CEX3)
P1.1 (CEX1)
P1.0 (CEX0)
P1.2 (CEX2)
1, 2, 5, 6, 7, 8, 11, 12
Interface
Pin #
PCA
3, 4
1
2
Pin #
4, 10
3, 9
Rev. 0.2
Description
AIN0.0 (AIN0.0),
P2.0 (SYSCLK)
P2.6 (TXCLK)
P3.7 (Reset)
P1.7 (/INT1)
P3.0 (GPIO)
P3.1 (GPO)
P0.7 (RXD)
C8051F120 Pin Descriptions
P2.7 (RTS)
P0.6 (TXD)
RING
Interface
TIP
NC
Serial
Description
RING
TIP
NC
P7.5 (Data Bus)
P7.6 (Data Bus)
P7.4 (Data Bus)
P7.7 (Data Bus)
P7.3 (Data Bus)
P7.2 (Data Bus)
P7.1 (Data Bus)
P7.0 (Data Bus)
P1.6 (/INT0)
P4.7 (WR)
P4.6 (RD)
P6.7 (CS)
Interface
P6.0 (A0)
Parallel
MODEM-DK
P0.4 (MOSI),
P0.3 (MISO)
P0.5 (NSS)
P0.2 (SCK)
EEPROM
Interface
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