101-0522 Rabbit Semiconductor, 101-0522 Datasheet - Page 46

• Manufacturer Part Number: 101-0522
• Description: MODULE RABBITCORE RCM3220
• Manufacturer: Rabbit Semiconductor

Specifications of 101-0522

• Module/board Type: MPU Core Module
• For Use With/related Products: RCM3220
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 101-522; 101-522

PARAMETERS
RETURN VALUE
RabbitCore RCM3700 User’s Manual
unsigned int anaInDriver(unsigned int cmd,
Reads the voltage of an analog input channel by serial-clocking an 8-bit command to the ADS7870 A/D
converter by the Direct Mode method. This function assumes that Mode1 (most significant byte first) and
the A/D converter oscillator have been enabled. See anaInConfig() for the setup.
The conversion begins immediately after the last data bit has been transferred. An exception error will
occur if Direct Mode bit D7 is not set.
cmd contains a gain code and a channel code as follows.
Use the following calculation and the tables below to determine cmd:
len, the output bit length, is always 12 for 11-bit conversions
Channel Code
unsigned int len);
D7—1; D6–D4—Gain Code; D3–D0—Channel Code
cmd = 0x80 | (gain_code*16) + channel_code
* Negative input is ground.
† Not accessible on RCM3700 Prototyping Board
7*
3
0
1
2
4
5
6
†
Differential Input
+AIN0 -AIN1
+AIN2 -AIN3
+AIN4 -AIN5
+AIN6 -AIN7
-AIN0 +AIN1
-AIN2 +AIN3
-AIN4 +AIN5
-AIN6 +AIN7
Lines
Gain Code
0
1
2
3
4
5
6
7
Channel Code
10
11
12
13
14
15
Multiplier
8
9
x10
x16
x20
x1
x2
x4
x5
x8
Single-Ended
Input Lines
AIN0
AIN1
AIN2
AIN3
AIN4
AIN5
AIN6
AIN7
*
4–20 mA
AIN0*
AIN1*
AIN2*
AIN7*
Lines
AIN3
AIN4
AIN5
AIN6
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