DS_FT313H Datasheet, PDF (54/64 Pages) Future Technology Devices International Ltd. – The FT313H is a Hi-Speed Universal Serial Bus (USB) Host Controller compatible with Universal Serial Bus Specification Rev 2.0 and supports data transfer speeds of up to 480M bit/s.

Document No.: FT_000589
FT313H USB2.0 HS Host Controller Datasheet Version 1.1
Clearance No.: FTDI# 318
Figure 7-1 FT313H Chip Schematic
7.1 Examples of Bus Interface connection
7.1.1 16-Bit SRAM asynchronous bus interface
FT313H
CS_E/CS_N
OE_N/RE_N/RD_N
WE_N/WR_N
AD<15:0>
A<7:0>
INT
DACK
DREQ
Microcontroller
CS_N
RD_N
WR_N
AD<15:0>
A<7:0>
INT
DACK
DREQ
If DMA transfers are not used the DACK and DREQ signals may be left floating or the DACK signal may be
terminated with external 10k ohm pull-down resistor.
If the microcontroller has no AD<0> pin for 16-bit wide devices, the unused AD<0> signal with must be
terminated with an external 10k ohm pull-down resistor.
7.1.2 8-Bit SRAM asynchronous bus interface
FT313H
CS_E/CS_N
OE_N/RE_N/RD_N
WE_N/WR_N
AD<7:0>
A<7:0>
INT
DACK
DREQ
Microcontroller
CS_N
RD_N
WR_N
AD<7:0>
A<7:0>
INT
DACK
DREQ
8-Bit SRAM bus interface doesn’t use high AD<15:8> data bus, must terminate AD<15:8> signals with
external 10k ohm pull-down resistors.
If DMA transfers are not used the DACK and DREQ signals may be left floating or the DACK signal may be
terminated with external 10k ohm pull-down resistor.
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