FT4232H QUAD HIGH SPEED USB TO MULTIPURPOSE UART/MPSSE IC
Datasheet
Version 2.4
Document No.: FT_000060 Clearance No.: FTDI#78
3.2.3
Common Pins for FT4232H-56Q
The operation of the following FT4232H-56Q pins are the same regardless of the configured mode:-
Pin No.
Name
Type
Description
POWER
Input
2,31
VCORE
+1.8V input. Core supply voltage input.
POWER
Input
+3.3V input. I/O interface power supply input. Failure to connect all VCCIO
pins will result in failure of the device.
16,36,50
9
VCCIO
VPLL
POWER
Input
+3.3V input. Internal PHY PLL power supply input. It is recommended that
this supply is filtered using an LC filter.
+3.3V Input. Internal USB PHY power supply input. Note that this cannot be
connected directly to the USB supply. A +3.3V regulator must be used. It is
recommended that this supply is filtered using an LC filter.
POWER
Input
5
VPHY
POWER
Input
44
43
VREGIN
VREGOUT
GND
+3.3V Input. Integrated 1.8V voltage regulator input.
POWER
Output
POWER
Input
+1.8V Output. Integrated voltage regulator output. Connect to VCORE with
3.3uF filter capacitor.
21,41,45
0V Ground input.
Table 3.9 Power and Ground for 56-pin VQFN package
Pin No.
Name
OSCI
OSCO
REF
Type
INPUT
OUTPUT
INPUT
INPUT
INPUT
INPUT
INPUT
Description
3
4
Oscillator input.
Oscillator output.
6
Current reference – connect via a 12K Ohm resistor @ 1% to GND.
USB Data Signal Minus.
7
DM
8
DP
USB Data Signal Plus.
10
11
TEST
RESET#
IC test pin – for normal operation should be connected to GND.
Reset input (active low).
Active low power-enable output.
PWREN# = 0: Normal operation.
54
30
PWREN#
OUTPUT
OUTPUT
PWREN# =1: USB SUSPEND mode or device has not been configured.
This can be used by external circuitry to power down logic when device is in
USB suspend or has not been configured.
SUSPEND#
Active low when USB is in suspend mode.
Table 3.10 Common Function pins for 56-pin VQFN Package
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