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Route internal GP16~GP23 on the TW6869

as the GPIO1~GPIO8;

Connect them to the TB1~TB8 and J3 (34-pin)

connector

LED

Power-OK indicators: D1 and D2

The LED D1 and D2 are used for indicating on-board Power-OK status.

LED

Description

Main Power, 3.3V Power-OK Status

Core Power, 1.2V Power-OK Status

(for the Video Decoder Chipset TW6869, core power status

monitoring)

GPIO Status Indicators: D9 ~ D16

The LED D9, D10, …, and D16 are used for indicating the status of the GPIO (General

Purpose Digital Input/Output) pin signals, labeled as GPIO1, GPIO2, …, and GPIO8 on

the board, and directly connected to the TB1 ~ TB8 and J3 (34-pin) connector’s digital

in/out pins. A logic ‘0’ (low) turns the LED on and a logic ‘1’ (high) turns it off.

LED

Lable

Signal

GPIO1

Status of GPIO1 ( ‘0’  On and ‘1’  Off )

D10

GPIO2

Status of GPIO2 ( ‘0’  On and ‘1’  Off )

D11

GPIO3

Status of GPIO3 ( ‘0’  On and ‘1’  Off )

D12

GPIO4

Status of GPIO4 ( ‘0’  On and ‘1’  Off )

D13

GPIO5

Status of GPIO5 ( ‘0’  On and ‘1’  Off )

D14

GPIO6

Status of GPIO6 ( ‘0’  On and ‘1’  Off )

D15

GPIO7

Status of GPIO7 ( ‘0’  On and ‘1’  Off )

D16

GPIO8

Status of GPIO8 ( ‘0’  On and ‘1’  Off )

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