FT4232HL datasheet(9/55 Pages) FTDI

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FT4232H QUAD HIGH SPEED USB TO MULTIPURPOSE UART/MPSSE IC

Datasheet

Version 2.4

Document No.: FT_000060 Clearance No.: FTDI#78

3.1.3

Common Pins

The operation of the following FT4232H pins are the same regardless of the configured mode:-

Pin No.

Name

Type

Description

12,37,64

VCORE

POWER

Input

+1.8V input. Core supply voltage input.

20,31,42,56

VCCIO

POWER

Input

+3.3V input. I/O interface power supply input. Failure to connect all

VCCIO pins will result in failure of the device.

VPLL

POWER

Input

+3.3V input. Internal PHY PLL power supply input. It is recommended

that this supply is filtered using an LC filter.

VPHY

POWER

Input

+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.

VREGIN

POWER

Input

+3.3V Input. Integrated 1.8V voltage regulator input.

VREGOUT

POWER

Output

+1.8V Output. Integrated voltage regulator output. Connect to VCORE

with 3.3uF filter capacitor.

AGND

POWER

Input

0V Analog ground.

1,5,11,15,

25,35,47,51

GND

POWER

Input

0V Ground input.

Table 3.2 Power and Ground for 64-pin QFN and LQFP package

Pin No.

Name

Type

Description

OSCI

INPUT

Oscillator input.

OSCO

OUTPUT

Oscillator output.

REF

INPUT

Current reference – connect via a 12K Ohm resistor @ 1% to GND.

I/O

USB Data Signal Minus.

I/O

USB Data Signal Plus.

TEST

INPUT

IC test pin – for normal operation should be connected to GND.

RESET#

INPUT

Reset input (active low).

PWREN#

OUTPUT

Active low power-enable output.

PWREN# = 0: Normal operation.

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#

OUTPUT

Active low when USB is in suspend mode.

Table 3.3 Common Function pins for 64-pin QFN and LQFP Package

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