20-101-1258 Rabbit Semiconductor, 20-101-1258 Datasheet - Page 94

• Manufacturer Part Number: 20-101-1258
• Description: COMPUTER SINGLE-BOARD BL4S160
• Manufacturer: Rabbit Semiconductor

Specifications of 20-101-1258

• Module/board Type: Single Board Computer Module
• Product: Modules
• Processor Type: Rabbit 4000
• Sram: 1 MB
• Flash: 2 MB
• Timers: 8 bit, 10 bit
• Number Of I/os: 20
• Backup Battery: 3 V Lithium Coin Type
• Operating Voltage: 9 V to 36 V
• Board Size: 96 mm x 146 mm x 16 mm
• Description/function: Computer Module
• For Use With/related Products: BL4S160
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 316-1171

FUNCTION DESCRIPTION
PARAMETER
BL4S100 User’s Manual
int anaInDriver(char cmd);
Low-level driver to read the ADS7870 A/D converter chip. Reads the voltage of an an-
alog input channel by serial clocking an 8-bit command to the ADS7870 by its Direct
Mode method.
assumes that Mode2 (least significant byte first) and the A/D converter oscillator have
been enabled.
See anaInConfig() for additional setup information.
After the last data bit is transferred, the conversion begins immediately. An exception
error will occur if Direct Mode bit D7 is not set.
cmd
anaInConfig()
The
MSB is set high for direct-mode access. The format is as follows:
Use the following calculation and tables to determine
cmd = 0x80 | (gain_code<<4) + channel_code
cmd
gain_code
parameter contains a gain code and channel code, and the
anaInDriver
D7
1
0
1
2
3
4
5
6
7
uses the Register Mode method. This function call
gain_code
D6–D4
Multiplier
10
16
20
1
2
4
5
8
channel_code
D3–D0
cmd
:
92