Document No.: FT_000060
FT4232H QUAD HIGH SPEED USB TO MULTIPURPOSE UART/MPSSE IC
Datasheet Version 2.05
Clearance No.: FTDI#78
Pin No.
Name
Type
INPUT
OUTPUT
INPUT
INPUT
INPUT
INPUT
INPUT
Description
2
3
6
7
8
13
14
OSCI
OSCO
REF
DM
DP
TEST
RESET#
Oscillator input.
Oscillator output.
Current reference – connect via a 12K Ohm resistor @ 1% to
GND.
USB Data Signal Minus.
USB Data Signal Plus.
IC test pin – for normal operation should be connected to GND.
Reset input (active low).
Active low power-enable output.
PWREN# = 0: Normal operation.
60
PWREN#
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.
36
SUSPEND#
OUTPUT
Active low when USB is in suspend mode.
Table 3.3 Common Function pins
Pin No.
Name
Type
Description
63
62
EECS
EECLK
EEDATA
I/O
OUTPUT
I/O
EEPROM – Chip Select. Tri-State during device reset.
Clock signal to EEPROM. Tri-State during device reset. When not in reset,
this outputs the EEPROM clock.
EEPROM – Data I/O Connect directly to Data-In of the EEPROM and to
Data-Out of the EEPROM via a 2.2K resistor. Also, pull Data-Out of the
EEPROM to VCC via a 10K resistor for correct operation. Tri-State during
device reset.
61
Table 3.4 EEPROM Interface Group
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