FT2232H datasheet(39/60 Pages) FTDI

tên linh kiện	FT2232H

Giải thích chi tiết về linh kiện	DUAL HIGH SPEED USB TO MULTIPURPOSE UART

PDF	60 Pages

Scroll/Zoom	100%

nhà sản xuất	FTDI [Future Technology Devices International Ltd.]

Trang chủ	http://www.ftdichip.com

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39 / 60 page

Document No.: FT_000061

FT2232H DUAL HIGH SPEED USB TO MULTIPURPOSE UART/FIFO IC

Datasheet Version 2.05

Clearance No.: FTDI#77

4.11 RS232 UART Mode LED Interface Description

When configured in UART mode the FT2232H has two IO pins on each channel dedicated to controlling LED

status indicators, one for transmitted data the other for received data. When data is being transmitted /

received the respective pins drive from tri-state to low in order to provide indication on the LED’s of data

transfer. A digital one-shot timer is used so that even a small percentage of data transfer is visible to the end

user.

Figure 4.19 Dual LED UART Configuration

Figure 4.19

shows a configuration using two individual LED’s – one for transmitted data the other for

received data.

Figure 4.20 Single LED UART Configuration

In Figure 4.20 the transmit and receive LED indicators are wire-OR’ed together to give a single LED

indicator which indicates any transmit or receive data activity.

Note that the LED’s are connected to the same supply as VCCIO.

FT2232H

TXLED#

RXLED#

VCCIO

220R

FT2232H

TXLED#

RXLED#

VCCIO

220R

LED

FT2232H bảng dữ liệu(PDF) 39 Page - Future Technology Devices International Ltd.