Datasheet

Copyright © 2009 Future Technology Devices International Limited 3
Document No.: FT_000053
FT232R USB UART IC Datasheet Version 2.02
Clearance No.: FTDI# 38
2 FT232R Block Diagram
Figure 2.1 FT232R Block Diagram
For a description of each function please refer to Section 4.
x4 Clock
Multiplier
UART
FIFO Controller
Serial Interface
Engine
( SIE )
USB
Protocol Engine
Baud Rate
Generator
UART Controller
with
Programmable
Signal Inversion
3.3 Volt
LDO
Regulator
USB
Transceiver
with
Integrated
Series
Resistors
and 1.5K
Pull-up
USB DPLL
Internal
12MHz
Oscillator
48MHz
48MHz
OCSI
(optional)
OSCO
(optional)
USBDP
USBDM
3V3OUT
VCC
DBUS0
DBUS1
DBUS2
DBUS3
DBUS4
DBUS5
DBUS6
DBUS7
CBUS0
CBUS2
CBUS3
SLEEP#
RESET#
TEST
GND
Reset
Generator
3V3OUT
CBUS1
FIFO TX Buffer
FIFO RX Buffer
Internal
EEPROM
To USB Transeiver Cell