20-101-0383 Rabbit Semiconductor, 20-101-0383 Datasheet - Page 42

• Manufacturer Part Number: 20-101-0383
• Description: MODULE RABBITCORE RCM2020
• Manufacturer: Rabbit Semiconductor

Specifications of 20-101-0383

• Module/board Type: MPU Core Module
• Product: Microcontroller Modules
• Core Processor: Rabbit 2000
• Clock Speed: 18.432 MHz
• Interface Type: Ethernet, Serial
• Flash: 256 KB
• Timers: 5 x 8 bit, 2 x 10 bit
• Operating Supply Voltage: 4.75 V to 5.25 V
• Board Size: 48.3 mm x 58.4 mm x 14 mm
• Core: RCM2020
• Processor Series: RCM2000
• For Use With/related Products: RCM2020
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 316-1082

5.2 I/O
The RCM2000 was designed to interface with other systems, and so there are no drivers
written specifically for this purpose. The general Dynamic C read and write functions
allow you to customize the parallel I/O to meet your specific needs. For example, use
to set all the port E bits as inputs, or use
to set all the port E bits as outputs.
The sample programs in the Dynamic C
5.2.1 PCLK Output
The PCLK output is controlled by bits 7 and 6 of the Global Output Register (GOCR) on
the Rabbit 2000 microprocessor, and so can be enabled or disabled in software. Starting
with Dynamic C v 7.02, the PCLK output is disabled by default at compile time to mini-
mize radiated emissions; the PCLK output is enabled in earlier versions of Dynamic C.
Use the following code to set the PCLK output as needed.
38
PCLK output driven with peripheral clock:
PCLK output driven with peripheral clock ÷ 2:
PCLK output off (low):
PCLK output on (high):
WrPortI(PEDDR, &PEDDRShadow, 0x00);
WrPortI(PEDDR, &PEDDRShadow, 0xFF);
WrPortI(GOCR, &GOCRShadow, (GOCRShadow&~0xc0));
WrPortI(GOCR, &GOCRShadow, ((GOCRShadow&~0xc0)| 0x40));
WrPortI(GOCR, &GOCRShadow, ((GOCRShadow&~0xc0)| 0x80));
WrPortI(GOCR, &GOCRShadow, (GOCRShadow | 0xc0));
SAMPLES
directory provide further examples.
RabbitCore RCM2000