Document No.: FT_000060
FT4232H QUAD HIGH SPEED USB TO MULTIPURPOSE UART/MPSSE IC
Datasheet Version 2.09
Clearance No.: FTDI#78
Pin No.
2
3
6
7
8
13
14
Name
OSCI
OSCO
REF
DM
DP
TEST
RESET#
Type
INPUT
OUTPUT
INPUT
INPUT
INPUT
INPUT
INPUT
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.
Description
Table 3.3 Common Function pins
Pin No.
63
62
61
Name
EECS
EECLK
EEDATA
Type
I/O
OUTPUT
I/O
Description
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.
Table 3.4 EEPROM Interface Group
Copyright © 2010 Future Technology Devices International Limited
11
FTDI [ FUTURE TECHNOLOGY DEVICES INTERNATIONAL LTD. ]
