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Data Sheet

AD9084

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS

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Table 26. Pin Function Descriptions (4T4R Differential ADC) (Continued)

Pin No.

Mnemonic

Type

Description

C21

GPIO_20

Input/Output

General-Purpose Input and Output (GPIO).

TRIG_0_B

Input

Trigger Input 0 for Bank B. This pin is floating when unused.

TRIG_1_B

Input

Trigger Input 1 for Bank B. This pin is floating when unused.

D19

GPIO_26

Input/Output

GPIO.

D20

GPIO_27

Input/Output

GPIO.

D21

GPIO_30

Input/Output

GPIO

D22

RESETB

Input

Active Low Reset Input. RESETB places digital logic and

SPI registers in a known default state. RESETB must be

connected to a digital IC that is capable of issuing a reset

signal for the first step in the device initialization process.

E19

GPIO_24

Input/Output

GPIO.

E20

GPIO_25

Input/Output

GPIO.

E21

GPIO_28

Input/Output

GPIO.

E22

GPIO_29

Input/Output

GPIO.

E23

GPIO_21

Input/Output

GPIO.

F19

GPIO_19

Input/Output

GPIO.

F22

GPIO_22

Input/Output

GPIO.

G22

GPIO_23

Input/Output

GPIO.

J4, J5

VCMA_B1, VCMA_B0

Output

ADC Buffer VCMOUT for Bank B. Decouple these pins to GND

with a 1nF capacitor.

J21

GPIO_18

Input/Output

GPIO.

K21

GPIO_17

Input/Output

GPIO.

L14

GPIO_12

Input/Output

GPIO.

L15

GPIO_13

Input/Output

GPIO.

L16

GPIO_14

Input/Output

GPIO.

L17

GPIO_15

Input/Output

GPIO.

L18

GPIO_16

Input/Output

GPIO.

N19

SPI_SDO

Output

Serial Port Data Output.

N20

GPIO_31

Input/Output

GPIO.

N21

GPIO_32

Input/Output

GPIO.

P19

SPI_SDIO

Input/Output

Serial Port Bidirectional Data Input and Output

T19

SPI_CSB

Input

Serial Port Enable Input. Active low.

U19

SPI_CLK

Input

Serial Port Clock Input.

U20

GPIO_33

Input/Output

GPIO.

U21

GPIO_34

Input/Output

GPIO.

W14

GPIO_11

Input/Output

GPIO.

W15

GPIO_10

Input/Output

GPIO.

W16

GPIO_9

Input/Output

GPIO.

W17

GPIO_8

Input/Output

GPIO.

W18

GPIO_7

Input/Output

GPIO.

Y21

GPIO_6

Input/Output

GPIO.

AA4, AA5

VCMA_A1, VCMA_A0

Output

ADC Buffer VCMOUT for Bank A. Decouple these pins to GND

with a 1nF capacitor

AA21

GPIO_5

Input/Output

GPIO.

AC22

GPIO_0

Input/Output

GPIO.

AD19

GPIO_4

Input/Output

GPIO.

AD22

GPIO_1

Input/Output

GPIO.

AE23

GPIO_2

Input/Output

GPIO.

AF7

TRIG_0_A

Input

Trigger Input 0 for Bank A.

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