ADUCM350 datasheet(22/41 Pages) AD

22 / 41 page

Data Sheet

ADuCM350

Rev. A | Page 21 of 40

Pin No.

Mnemonic

I/O1

I/O Supply2

GPIO

Pull-Up/Down2

Description

DVDD

N/A

1.8 V Digital Regulator Decoupling Capacitor Pin.

AVDD_RX/AVDD_TX

AVDD TX/RX

N/A

1.8 V Analog Regulator Decoupling Capacitor

Pin for Receiver (Rx)/Transmitter (Tx) Circuits.

AGND_RX/AGND_TX

N/A

Rx/Tx Analog Ground.

K10

AGND_REF

N/A

Reference Ground.

H14

DGND

N/A

Digital Ground.

DGND1

N/A

Digital Ground.

DGND2/LCD_GND

N/A

Digital Ground/Ground for LCD.

DGND USB

N/A

USB Ground. Connect DGND USB to the

digital ground plane.

AFE Pins

P12

AN_A

VCCM_ANA

N/A

ADC Mux Input.

P13

AN_B

VCCM_ANA

N/A

ADC Mux Input.

R13

AN_C

VCCM_ANA

N/A

ADC Mux Input.

R14

AN_D

VCCM_ANA

N/A

ADC Mux Input.

RCAL 1

VCCM_ANA

N/A

Terminal A of Calibration Resistor. Connect

RCAL 1 to the switch matrix.

RCAL 2

VCCM_ANA

N/A

Terminal B of Calibration Resistor. Connect

RCAL 2 to the switch matrix.

AFE 1

VCCM_ANA

N/A

Uncommitted AFE Pin 1.

AFE 2

VCCM_ANA

N/A

Uncommitted AFE Pin 2.

AFE 3

VCCM_ANA

N/A

Uncommitted AFE Pin 3.

AFE 4

VCCM_ANA

N/A

Uncommitted AFE Pin 4.

AFE 5

VCCM_ANA

N/A

Uncommitted AFE Pin 5.

AFE 6

VCCM_ANA

N/A

Uncommitted AFE Pin 6.

AFE 7

VCCM_ANA

N/A

Uncommitted AFE Pin 7.

AFE 8

VCCM_ANA

N/A

Uncommitted AFE Pin 8.

P11

TIA_I

VCCM_ANA

N/A

Transimpedance Amplifier Input. Connect the

IV resistor to this pin.

R11

TIA_O

VCCM_ANA

N/A

Transimpedance Amplifier Output. Connect

the IV resistor to this pin.

R12

REF_EXCITE

VCCM_ANA

N/A

Gated Precision Reference Voltage.

Debug Interface

TDO-SWO/P0.6/UTX

I/O

VCCM_DIG

Pull-up

JTAG Serial Data Output or Serial Wire Trace

Output/GPIO/UART_TX. This is a

multifunction pin.

TDI/P0.7/URX

I/O

VCCM_DIG

Pull-up

JTAG Serial Data Input/GPIO/UART_RX. This is

a multifunction pin.

TMS-SWDIO/P0.8

I/O

VCCM_DIG

Pull-up

JTAG Test Mode Select or Serial Wire

Data/GPIO. This is a multifunction pin.

TCK-SWCLK/P0.9

I/O

VCCM_DIG

Pull-down

JTAG Test Clock or Serial Wire Clock/GPIO. This

is a multifunction pin.

R15

TRST

VCCM

N/A

Trace Reset.

M15

TRACECLK

VCCM

N/A

Trace Clock.

M14

TRACE0

VCCM

N/A

Trace Data 0.

N15

TRACE1

VCCM

N/A

Trace Data 1.

N14

TRACE2

VCCM

N/A

Trace Data 2.

P15

TRACE3

VCCM

N/A

Trace Data 3.

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