ft232hq Future Technology Devices International Ltd., ft232hq Datasheet - Page 38

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

4.8 MPSSE Interface Mode Description.
MPSSE Mode is designed to allow the FT232H to interface efficiently with synchronous serial protocols
such as JTAG, I
interface is designed to be flexible so that it can be configured to allow any synchronous serial protocol
(industry standard or proprietary) to be implemented using the FT232H.
MPSSE is fully configurable, and is programmed by sending commands down the data stream. These can
be sent individually or more efficiently in packets. MPSSE is capable of a maximum sustained data rate of
30 Mbits/s.
When the FT232H is configured in MPSSE mode, the IO timing and signals used are shown in
Figure 4.14 and Table 4.4 These show timings for CLKOUT=30MHz. CLKOUT can be divided internally to
be provide a slower clock.
Figure 4.14 MPSSE Signal Waveforms
Table 4.4 MPSSE Signal Timings
Name
t1
t2
t3
t4
t5
t6
Min
7.5
7.5
11
1
0
2
C and SPI Bus. It can also be used to program SRAM based FPGA‟s over USB. The MPSSE
Copyright © 2011 Future Technology Devices International Limited
16.67
8.33
8.33
Typ
FT232H SINGLE CHANNEL HI-SPEED USB TO MULTIPURPOSE UART/FIFO IC
15.15
9.17
Max
9.17
7.15
Units
ns
ns
ns
ns
ns
ns
CLKOUT to TDI/DO delay
CLKOUT high period
CLKOUT low period
TDI/DO setup time
TDI/DO hold time
CLKOUT period
Comments
Document No.: FT_000288
Clearance No.: FTDI #199
Datasheet Version 1.0
38