FT311D-32L1C-R FTDI, FT311D-32L1C-R Datasheet - Page 10

• Manufacturer Part Number: FT311D-32L1C-R
• Description: USB Interface IC USB Android Host Controller IC LQFP32
• Manufacturer: FTDI

Specifications of FT311D-32L1C-R

• Rohs: yes
• Product: USB 2.0
• Data Rate: 12 Mbps
• Interface Type: I2C, UART, USB
• Operating Supply Voltage: 3.63 V
• Operating Supply Current: 25 mA
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: LQFP-32
• Minimum Operating Temperature: - 40 C

4
FT311D is FTDIs Android Accessory Mode integrated circuit device or Android Host. The FT311D behaves
like a bridge between an Android device and the various I/O available. Selection of various modes is
performed using CNFGx pins.
4.1 Key Features
Easy to use Android accessory IC translating the Device port of the android tablet into either GPIO, UART,
PWM, I
4.2 Functional Block Descriptions
The following paragraphs describe each function within FT311D. Please refer to the block diagram shown
in
4.2.1 Peripheral Interface Modules
FT311D has six peripheral interface modules available for selection. Full descriptions of each module are
described in
4.2.2 USB Transceivers
USB transceiver cells provide the physical USB device interface supporting USB 1.1 and USB 2.0
standards. Low-speed and full-speed USB data rates are supported. The output driver provides +3.3V
level slew rate control signalling, whilst a differential receiver and two single ended receivers provide USB
DATA IN, SE0 and USB Reset condition detection. These cells also include integrated internal pull-down
resistors as required for host mode.
4.2.3 USB Host
These blocks handle the parallel-to-serial and serial-to-parallel conversion of the USB physical layer. This
includes bit stuffing, CRC generation.
4.3 I/O Peripherals Signal Names
Peripheral
SPI Slave
Figure 2.1
UART
GPIO
PWM
I






2
C
Function Description
2
C Master, SPI Slave or SPI Master capabilities
GPIO - General purpose I/O pins
UART
PWM
I2C Master
SPI Slave
SPI Master
.
Section
uart_tx_active
Signal Name
Copyright © 2012 Future Technology Devices International Limited
uart_cts#
uart_rts#
spi_s_clk
uart_rxd
uart_txd
5.
I2c_sda
I2c_scl
pwm
gpio
Outputs
DS
7
1
1
0
0
0
4
0
1
0
_FT311D
Inputs
7
0
0
1
1
1
0
1
1
1
USB ANDROID HOST IC Datasheet
Document No.: FT_000660 Clearance No.: FTDI# 305
UART active signal (typically used with RS485)
Transmit asynchronous data output
Receive asynchronous data input
Request to send control output
I2C bus serial clock line - slave
I2C bus serial data line - slave
Clear to send control input
Pulse width modulation
General purpose I/O
SPI clock input
Description
Version 1.0
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