DS
_FT311D
USB ANDROID HOST IC Datasheet
Version 1.0
Document No.: FT_000660 Clearance No.: FTDI#
305
Pin No.
17
18
4
Name
USBDP
USBDM
XTIN
Type
INPUT/OUTPUT
INPUT/OUTPUT
INPUT
Description
USB Data Signal Plus.
USB Data Signal Minus.
Input to 12MHz Oscillator Cell. Connect 12MHz
crystal across pins 4 and 5.
Output from 12MHz Oscillator Cell. Connect 12MHz
crystal across pins 4 and 5.
For internal use. Pull to GND
For factory use. Pull to 3V3.
Reset input (active low).
No connect pins. Leave unterminated.
Active low signal that may be used to control a
switch for enabling power to the USB port pin 1
(VBUS).
Configuration pin 0 used to select between
GPIO,UART,PWM,I
2
C and SPI.
Pull to Ground = Logic „0‟(No external resistor
needed)
Leave Open = Logic „1‟ (Internal Pull up is present)
Configuration pin 1 used to select between
GPIO,UART,PWM,I
2
C and SPI.
Pull to Ground = Logic „0‟(No external resistor
needed)
Leave Open = Logic „1‟ (Internal Pull up is present)
Configuration pin 2 used to select between
GPIO,UART,PWM,I
2
C and SPI.
Pull to Ground = Logic „0‟(No external resistor
needed)
Leave Open = Logic „1‟ (Internal Pull up is present)
Output signal to indicate a problem with the USB
connection
5
8
9
10
20, 21
XTOUT
TEST1
TEST2
RESET#
NC
OUTPUT
INPUT
INPUT
INPUT
-
OUTPUT
11
TEST0
12
CNFG0
INPUT
14
CNFG1
INPUT
15
CNFG2
INPUT
32
USB_ERROR#
OUTPUT
Table 3.2 Common Function pins
Pin
No.
23
24
25
26
Name
IOBUS0
IOBUS1
IOBUS2
IOBUS3
Type
INPUT/OUTPUT
INPUT/OUTPUT
INPUT/OUTPUT
INPUT/OUTPUT
Description
I/O signal. Function depends on CNFG pin setting. See table 3.4
I/O signal. Function depends on CNFG pin setting. See table 3.4
I/O signal. Function depends on CNFG pin setting. See table 3.4
I/O signal. Function depends on CNFG pin setting. See table 3.4
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7
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