DS_FT2232D Datasheet, PDF (47/61 Pages) List of Unclassifed Manufacturers – Future Technology Devices International Ltd

Document No.: FT_000173
FT2232D DUAL USB TO SERIAL UART/FIFO IC Datasheet
Version 2.05
Clearance No.: FTDI# 127
Time
Description
Min
Typical
Max
Value
tperiod
Clock Period
41.6
83.3
125.0
ns
thigh
Clock signal high 20.8
41.6
62.5
ns
time
tlow
Clock signal low 20.8
41.6
62.5
ns
time
Table 8.13 MCU Host Bus Emulation Mode Signal Timing - Clock (OSC) Signal
Unit
Figure 8.13 MCU Host Bus Emulation Example - USB <=> CAN Bus Interface
Figure 8.13 shows an example where the FT2232D is used to interface a Philips SJA1000 CAN Bus
Controller to a PC over USB. In this example IORDY is not used and so is pulled up to Vcc. I/O1 is used to
monitor the Interrupt output (INT) of the SJA1000. The MODE pin on the SJA1000 is pulled high to select
Intel mode. See the semiconductors section of the Philips website (www.philips.com) for more details
on the SJA1000 and suitable CAN Bus transceiver devices.
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