Document No.: FT_000053
FT232R USB UART IC Datasheet Version 2.07
Clearance No.: FTDI# 38
2
VCC
FT232R Block Diagram
SLEEP#
48MHz
3.3 Volt
LDO
Regulator
Baud Rate
Generator
3V3OUT
FIFO RX
Buffer
USBDP
USBDM
USB
Transceiver
with
Integrated
Series
Resistors
and 1.5K
Pull-
up
Serial Interface
Engine
( SIE )
USB
Protocol Engine
UART
FIFO Controller
UART Controller
with
Programmable
Signal Inversion
DBUS0
DBUS1
DBUS2
DBUS3
DBUS4
DBUS5
DBUS6
DBUS7
Internal
EEPROM
USB DPLL
3V3OUT
CBUS0
CBUS1
CBUS2
CBUS3
CBUS4
FIFO TX Buffer
OSCO
(optional)
OCSI
(optional)
Internal
12MHz
Oscillator
x4 Clock
Multiplier
RESET#
To USB Transeiver Cell
Reset
Generator
48MHz
TEST
GND
Figure 2.1 FT232R Block Diagram
For a description of each function please refer to Section 4.
Copyright © 2010 Future Technology Devices International Limited
4
FTDI [ FUTURE TECHNOLOGY DEVICES INTERNATIONAL LTD. ]
