Rainbow Electronics MAX1329 - Manual (Page 23)

MAX1329/MAX1330
12-/16-Bit DASs with ADC, DACs, DPIOs, APIOs,
Reference, Voltage Monitors, and Temp Sensor
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Pin Description
PIN
MAX1329 MAX1330
NAME FUNCTION
1 1 DPIO1 Digital Programmable Input/Output 1
2 2 DPIO2 Digital Programmable Input/Output 2
3 3 DPIO3 Digital Programmable Input/Output 3
4 4 DPIO4 Digital Programmable Input/Output 4
5 5 DOUT
Serial-Data Output. DOUT outputs serial data from the data register. DOUT changes on the
falling edge of SCLK and is valid on the rising edge of SCLK. When
CS is high, DOUT is
high impedance, unless APIO1 is programmed for SPI mode.
6 6 SCLK
Serial-Clock Input. Apply an external serial clock to transfer data to and from the device.
When
CS is high, SCLK is inactive unless APIO3 is configured for SPI mode. Then the input
on SCLK is level-shifted and output at APIO3.
7 7 DIN
Serial-Data Input. Data on DIN is clocked in on the rising edge of SCLK when CS is low.
When CS is high, DIN is inactive unless APIO2 is configured for SPI mode. Then the input
on DIN is level-shifted and output at APIO2.
8 8 CS
Active-Low Chip-Select Input. Drive CS low to transfer data to and from the device. When
CS is high and APIO4 is configured for SPI mode, APIO4 is low.
9 9 RST1
Open-Drain Reset Output 1. RST1 remains low while DV
DD is below 1.8V. RST1 can be
reprogrammed as a push-pull, active-high, or active-low Status register interrupt output.
10 10 RST2
Open-Drain Reset Output 2. RST2 remains low while DV
DD is below 2.7V. RST2 can be
reprogrammed as a push-pull, active-high, or active-low Status register interrupt output.
11 11 APIO1 Analog Programmable Input/Output 1
12 12 APIO2 Analog Programmable Input/Output 2
13 13 APIO3 Analog Programmable Input/Output 3
14 14 APIO4 Analog Programmable Input/Output 4
15 15 SNO1 Analog Switch 1 Normally-Open Terminal
16 16 SCM1 Analog Switch 1 Common Terminal
17 17 SNC1 Analog Switch 1 Normally-Closed Terminal
18 18 IN1+ Operational Amplifier 1 Noninverting Input
19 19 IN1- Operational Amplifier 1 Inverting Input. Also internally connected to ADC mux.
20 20 OUT1 Operational Amplifier 1 Output. Also internally connected to ADC mux.
21 — N.C. No Connection. Not internally connected.
22 — FBB DACB Force-Sense Feedback Input. Also internally connected to ADC mux.
23 — OUTB DACB Force-Sense Output. Also internally connected to ADC mux.
— 21 IN2+ Operational Amplifier 2 Noninverting Input
— 22 IN2- Operational Amplifier 2 Inverting Input. Also internally connected to ADC mux.
— 23 OUT2 Operational Amplifier 2 Output. Also internally connected to ADC mux.