Document No.: FT_000052
FT245R USB FIFO IC Datasheet Version 2.10
Clearance No.: FTDI# 39
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FT245R Block Diagram
VCC
PWREN#
3V3OUT
3.3 Volt
LDO
Regulator
VCCIO
FIFO RX Buffer
128 bytes
D0
D1
D2
D3
D4
D5
D6
D7
RD#
WR
RXF#
TXE#
Internal
EEPROM
3V3OUT
FIFO TX Buffer
256 bytes
USBDP
USBDM
USB
Transceiver
with
Integrated
Series
Resistors
and 1.5K
Pull-up
Serial Interface
Engine
( SIE )
USB
Protocol Engine
FIFO Controller
with
Programmable
High Drive
To USB
Transceiver
Cell
USB DPLL
OSCO
(optional)
OCSI
(optional)
Internal
12MHz
Oscillator
48MHz
Clock
Multiplier
RESET#
To USB Transceiver Cell
RESET
GENERATOR
TEST
GND
Figure 2.1 FT245R Block Diagram
For a description of each function please refer to Section 4.
Copyright © 2010 Future Technology Devices International Limited
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