Document No.: FT_000060
FT4232H QUAD HIGH SPEED USB TO MULTIPURPOSE UART/MPSSE IC
Datasheet Version 2.09
Clearance No.: FTDI#78
2
FT4232H Block Diagram
120 MHz
Baud Rate
Generator
Dual Port TX
Buffer
2K Bytes
Dual Port RX
Buffer
2K Bytes
120 MHz
MPSSE/
Multi-
purpose
UART/bit-
bang
Controller
VCC 3V3 IN
V1.8OUT
1.8 Volt
LDO
Regulator
ADBUS0
ADBUS1
ADBUS2
ADBUS3
ADBUS4
ADBUS5
ADBUS6
ADBUS7
EECS
EESK
EEDATA
EEPROM
Interface
120 MHz
120 MHz
Baud Rate
Generator
Dual Port TX
Buffer
2K Bytes
Dual Port RX
Buffer
2K Bytes
MPSSE/
Multi-
purpose
UART/bit-
bang
Controller
OSCI
OSCO
USBDP
UTMI PHY
BDBUS0
BDBUS1
BDBUS2
BDBUS3
BDBUS4
BDBUS5
BDBUS6
BDBUS7
USBDM
RREF
USB Protocol Engine
And FIFO Control
120 MHz
120 MHz
Baud Rate
Generator
Dual Port TX
Buffer
2K Bytes
RESET#
RESET
Generator
Dual Port RX
Buffer
2K Bytes
Multi-
purpose
UART/bit-
bang
Controller
CDBUS0
CDBUS1
CDBUS2
CDBUS3
CDBUS4
CDBUS5
CDBUS6
CDBUS7
TEST
120 MHz
120 MHz
Baud Rate
Generator
Dual Port TX
Buffer
2K Bytes
Dual Port RX
Buffer
2K Bytes
Multi-
purpose
UART/bit-
bang
Controller
DDBUS0
DDBUS1
DDBUS2
DDBUS3
DDBUS4
DDBUS5
DDBUS6
DDBUS7
PWREN#
SUSPEND#
Figure 2.1 FT4232H Block Diagram
For a description of each function please refer to Section 4.
Copyright © 2010 Future Technology Devices International Limited
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FTDI [ FUTURE TECHNOLOGY DEVICES INTERNATIONAL LTD. ]
