Terminal And Pin Definitions; Table 3-2. Afe881H1Evm Terminal And Pin Definitions - Texas Instruments AFE881H1 User Manual

EVM Hardware Overview

3.4 Terminal and Pin Definitions

Table 3-2 shows the EVM terminal and pin definitions, allowing the user to operate and connect the device to
optional power settings and other input and output signals.
Terminal or Pin
J1
J2
J3
J4
J5
J6
J7
J8
J9 SPI Conn
J10 USB2ANY
J11
J12 UART Conn
J13 POL_SEL
J14 RES_LOAD
J15
J16 CLK_OUT
J17 CAP_LOAD
J18
J19, J20 FILT_SEL
J21 HART_IN
J22 HART_OUT
8 AFE881H1 Evaluation Module

Table 3-2. AFE881H1EVM Terminal and Pin Definitions

Name
VDD Shunt 1-2: Connect VDD to PVDD for use when VDD = PVDD = 1.8 V
Open 1-2: Disconnects VDD when PVDD > 1.8 V
PVDD Banana Jack: Optional for external PVDD
3p3V Shunt 1-2: Connect PVDD to USB2ANY 3.3-V supply
Shunt 3-4: Connect IOVDD to USB2ANY 3.3-V supply
GND Banana Jack: Optional for external GND
VREFIO Shunt 1-2: Connect REF3312 to VREFIO for external reference
Open 1-2: Open for device internal reference
IOVDD Shunt 1-2: Connect IOVDD to power
REF EN Shunt 1-2: Enable device internal reference
Shunt 2-3: Disable device internal reference
UARTIN Shunt 1-2: Connect UARTIN to device from USB2ANY through voltage level shifter
Pin 1: RESET
Pin 3: SCLK
Pin 5: SDI
Pin 7: CS
Pin 9: SDO
Pin 2, 4, 6, 8, 10: GND
30-pin ribbon cable connection, see
ADC
Terminal 1: AIN0
Terminal 2: GND
Terminal 3: AIN1
Pin 1: UART_IN
Pin 3: UART_OUT
Pin 5: RTS
Pin 7: CD
Pin 9: ALARM
Pin 2, 4, 6, 8, 10: GND
Shunt 1-2: Pull up to PVDD
Shunt 2-3: Pull down to GND
Open: Connection to AIN1 terminal of J11
Shunt 1-2: Connect 10-kΩ load to VOUT
VOUT Terminal 1: GND
Terminal 2: VOUT
Pin 1: CLK_OUT
Pin 2: GND
Shunt 1-2: Connect 150-pF load to VOUT
IOVDD Banana Jack: Optional for external IOVDD
Shunt 1-2: HART IN terminal internal filter selected
Shunt 2-3: HART IN terminal external filter selected
Terminal 1: GND
Terminal 2: HART input
Terminal 1: GND
Terminal 2: HART output
Copyright © 2021 Texas Instruments Incorporated
Function
Table 2-1
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SLAU858 – NOVEMBER 2021
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