Document No.: FT_000589
FT313H USB2.0 HS Host Controller Datasheet Version 1.2
Clearance No.: FTDI# 318
Pin No.
Name
Type
Description
Bit 4 of the address bus; when not in use, connect to
GND
30
A4
I
Input; 3.3V tolerant
Bit 5 of the address bus; when not in use, connect to
GND
31
32
33
A5
VCC (1V2)
A6
I
P
I
Input; 3.3V tolerant
Core power 1.2V input; for normal operation, this
pin must be connected to pin 46. Connect a 0.1uF
decoupling capacitor.
Bit 6 of the address bus; when not in use, connect to
GND
Input; 3.3V tolerant
Bit 7 of the address bus; when not in use, connect to
GND
34
35
A7
I
Input; 3.3V tolerant
I/O supply voltage; connect a 0.1uF decoupling
capacitor
VCC(I/O)
P
1.8V, 2.5V or 3.3V
DMA request;
36
37
38
DREQ
DACK
O
I
Push-pull output; 3.3V tolerant
DMA acknowledge; Internal pull-down.
Input; 3.3V tolerant
Address latch enable
Input; 3.3V tolerant
ALE/ADV_N
I
Command latch enable
Input; 3.3V tolerant
39
40
41
CLE
I
I
I
RESET_N
FREQSEL1
Chip reset; Internal pull-up. Input; 3.3V tolerant
Input clock frequency selection pin1
Input; 3.3V tolerant
Input clock frequency selection pin2
Input; 3.3V tolerant
42
FREQSEL2
I
43
44
AGND
P
Analog Ground
Crystal oscillator or clock input; 3.3V peak input
allowed
X1/CLKIN
AI
Crystal oscillator output; leave open if an external
clock is applied on pin X1/CLKIN
45
46
X2
AO
AO
VOUT(1V2)
Internal 1.2V regulator output; connect 4.7uF and
Copyright © 2013 Future Technology Devices International Limited
12
FTDI [ FUTURE TECHNOLOGY DEVICES INTERNATIONAL LTD. ]
