FT2232HQ-REEL FTDI, FT2232HQ-REEL Datasheet - Page 25

• Manufacturer Part Number: FT2232HQ-REEL
• Description: USB Interface IC USB HS to Dual UART/ FIFO/SPI/JTAG/I2C
• Manufacturer: FTDI

Specifications of FT2232HQ-REEL

• Mounting Style: SMD/SMT
• Package / Case: QFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

4.4 FT245 Synchronous FIFO Interface Mode Description
When channel A is configured in an FT245 Synchronous FIFO interface mode the IO timing of the signals
used are shown in Figure 4.4, which shows details for read and write accesses. The timings are shown in
Table 4.1. Note that only a read or a write cycle can be performed at any one time. Data is read or
written on the rising edge of the CLKOUT clock.
Figure 4.4 FT245 Synchronous FIFO Interface Signal Waveforms
Name
t10
t11
t12
t13
t14
t1
t2
t3
t4
t5
t6
t7
t8
t9
Minimum
7.5
7.5
11
11
11
1
1
1
1
0
1
0
0
Copyright © 2010 Future Technology Devices International Limited
Typical
16.67
8.33
8.33
FT2232H DUAL HIGH SPEED USB TO MULTIPURPOSE UART/FIFO IC
Minimum Units
7.15
7.15
7.15
7.15
7.15
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
WR# setup time to CLKOUT (WR# low after TXE# low)
RD# setup time to CLKOUT (RD# low afterOE# low)
CLKOUT to read DATA valid
OE# to read DATA valid
Write DATA setup time
Write DATA hold time
CLKOUT high period
CLKOUT low period
CLKOUT TO TXE#
CLKOUT to RXF#
CLKOUT to OE#
CLKOUT period
WR# hold time
RD# hold time
Description
Document No.: FT_000061
Clearance No.: FTDI#77
Datasheet Version 2.10
25