ft232hq Future Technology Devices International Ltd., ft232hq Datasheet - Page 17

• Manufacturer Part Number: ft232hq
• Description: Ft232h Single Channel Hi- Speed Usb To Multipurpose Uart/fifo Ic
• Manufacturer: Future Technology Devices International Ltd.

3.5.5 FT232H pins used in an MPSSE
The FT232H has a Multi-Protocol Synchronous Serial Engine (MPSSE). This mode is enabled by sending a
software command (Set Bit Mode option) to the FTDI driver. The MPSSE can be configured to a number
of industry standard serial interface protocols such as JTAG, I
proprietary bus protocol. For example, it is possible to connect FT232H‟s to an SRAM configurable FPGA
such as supplied by Altera or Xilinx. The FPGA device would normally be un-configured (i.e. have no
defined function) at power-up. Application software on the PC could use the MPSSE (and D2XX driver) to
download configuration data to the FPGA over USB. This data would define the hardware function on
power up. The MPSSE can be used to control a number of GPIO pins. When configured in this mode, the
pins used and the descriptions of the signals are shown in Table 3.10
Table 3.10 MPSSE Configured Pin Descriptions
For functional description of this mode, please refer to section 4.8
Pin No.
13
14
15
16
17
18
19
20
21
25
26
27
28
29
30
31
Copyright © 2011 Future Technology Devices International Limited
TMS/CS
GPIOH0
GPIOH1
GPIOH2
GPIOH3
GPIOH4
GPIOH5
GPIOH6
GPIOH7
TCK/SK
TDI/DO
TDO/DI
GPIOL0
GPIOL1
GPIOL2
GPIOL3
Name
FT232H SINGLE CHANNEL HI-SPEED USB TO MULTIPURPOSE UART/FIFO IC
OUTPUT
OUTPUT
OUTPUT
INPUT
Type
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
Clock Signal Output. For example:
JTAG – TCK, Test interface clock
SPI – SK, Serial Clock
Serial Data Output. For example:
JTAG – TDI, Test Data Input
SPI – DO
Serial Data Input. For example:
JTAG – TDO, Test Data output
SPI – DI, Serial Data Input
Output Signal Select. For example:
JTAG – TMS, Test Mode Select
SPI – CS, Serial Chip Select
General Purpose input/output
General Purpose input/output
General Purpose input/output
General Purpose input/output
General Purpose input/output
General Purpose input/output
General Purpose input/output
General Purpose input/output
General Purpose input/output
General Purpose input/output
General Purpose input/output
General Purpose input/output
MPSSE Configuration Description
2
C or SPI, or it can be used to implement a
Document No.: FT_000288
Clearance No.: FTDI #199
Datasheet Version 1.0
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