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Fox (LP3500)
4.4.5 A/D Converter Inputs
The functions in this section apply only to the LP3500 model.
Use this function to configure the ADS7870 A/D converter. This function will address the ADS7870 in
Register Mode only, and will report an error if you try to use it in Direct Mode. Refer to ADS7870 spec-
ification for proper addressing and commands.
unsigned int anaInConfig(unsigned int
instructionbyte, unsigned int cmd, long baud);
ADS7870 Signal
ADS7870 State
LP3500 Function/State
LN0
Input
AIN0
LN1
Input
AIN1
LN2
Input
AIN2
LN3
Input
AIN3
LN4
Input
AIN4
LN5
Input
AIN5
LN6
Input
AIN6
LN7
Input
AIN7
/RESET
Input
Board reset device
RISE/FALL
Input
Tied up for SCLK active on rising edge
PIO_0
Input
Pulled down unless driven by serial interface connection
PIO_1
Input
Pulled down unless driven by serial interface connection
PIO_2
Input
Pulled down unless driven by serial interface connection
PIO_3
Input
Pulled up unless driven by Vcc monitor
CONVERT
Input
Pulled down, not used
BUSY
Output
PF1 pulled down; 1 state converter is busy
CCLKCNTRL
Input
Tied down; 0 state sets CCLK as input
CCLK
Input
Tied down; external conversion clock
SCLK
Input
PF0; serial data transfer clock
SDI
Input
PC0; 3-wire mode for serial data input
SDO
Output
PC1; serial data output /CS driven
/CS
Input
PF3 pulled up; active-low enables serial interface
BUFIN
Input
Tied down; reference buffer amplifier
Содержание Fox LP3500
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