FT2232C 查看數據表（PDF） - Future Technology
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FT2232C Datasheet PDF : 56 Pages
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FT2232D Dual USB UART / FIFO I.C.
• Programmable Receive Buffer Timeout
• Extended EEPROM Support
The TX buffer timeout is programmable over USB in
The FT2232D supports 93C46 (64 x 16 bit), 93C56
1ms increments from 1ms to 255ms, thus allowing
(128 x 16 bit), and 93C66 (256 x 16 bit) EEPROMs.
the device to be better optimised for protocols
The extra space is not used by the device, however
requiring faster response times from short data
it is available for use by other external MCU / logic
packets.
whilst the FT2232D is being held in reset. There is
now an adiitional 64 words of space available (128
• Relaxed VCC Decoupling
bytes total) in the user area when a 93C56 or 93C66
The improved level of Vcc decoupling that was
incorporated into BM devices has also been
is used.
implemented in the FT2232D device.
• USB 2.0 (full speed option)
• Baud Rate Pre-Scaler Divisors
The FT2232D (UART mode) baud rate pre-scaler
supports division by (n+0), (n+0.125), (n+0.25),
(n+0.375), (n+0.5), (n+0.625), (n+0.75) and (n+0.875)
where n is an integer between 2 and 16,384 (214).
An EEPROM based option allows the FT2232D to
return a USB 2.0 device descriptor as opposed to
USB 1.1. Note : The device would be a USB 2.0 Full
Speed device (12Mb/s) as opposed to a USB 2.0
High Speed device (480Mb/s).
DS2232D Version 0.91
© Future Technology Devices International Ltd. 2006 Page of 51
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