TC6374AF datasheet(13/125 Pages) TOSHIBA

13 / 125 page

TC6374AF Hardware Datasheet

Rev. 1.22

02/2/15

TOTAL 125

PAGE NO. 13

6-3. SD memory card/ MultiMediaCard/ SmartMedia™/ NOR flash memory interface 1

Pin name

Pin number

I/O

Pin function

Functional description

FD7 - FD4

112-109

MEDIA DATA

BUS

The terminal is prepared to connect with media data bus. If clock is stabled

after resetting and NOR flash memory is re-written, it takes the upper position

of NOR flash memory data bus. In other modes, it takes the upper position of

address/data common bus to SmartMedia™. Address and data (including

command) are discriminated by FALE and FCLE. The terminal is set to Hi-Z

when #CD=“H”(media non-inserted).

FD3 - FD0

127-124

MEDIA DATA

BUS

The terminal is prepared to connect with media data bus. If clock is stabled

after resetting and NOR flash memory is re-written, it takes the lower position

of NOR flash memory data bus. In other modes, it takes the lower position of

address/data common bus to SmartMedia™. Address and data (including

command) are discriminated by FALE and FCLE. When SD Memory Card is

used, it is used as 4 bit data bus. If MultiMediaCard is used and SD Memory

Card is in the 1 bit mode, FD0 only is used. It is set to Hi-Z when #CD=

“H”(media non-inserted).

#FCE

106

SmartMedia™

CHIP ENABLE

The terminal indicates the chip enable output signal of SmartMedia™. If

#CD=“H”(media not-inserted), it indicates Hi-Z.

FCLE/MMC

103

SmartMedia™

COMMAND

LATCH

ENABLE/SD

Memory Card

MultiMediaCar

d CLOCK

The terminal indicates, if SmartMedia™ is used, the command latch enable

output signal to SmartMedia™. If command is outputted to FD bus, it

outputs ”H”. If SD Memory Card and MultiMediaCard are used, it indicates

250KHz, 2MHz, 8MHz and16MHz clock output signal to SD Memory Card and

MultiMediaCard. Clock output frequency is determined by the maximum

operation frequency of media. It is set to “L” when #CD=“H”(media

not-inserted).

FALE

104

SmartMedia™

ADDRESS

LATCH

ENABLE

Indicates address latch enable output signal to SmartMedia™. Outputs “H” if

address is outputted to FD bus. The terminal is set to “L” if #CD=“H”(media

not-inserted).

#FRE

107

SmartMedia™

READ

ENABLE

Indicates read enable output signal to SmartMedia™. Outputs “L” if address is

outputted to FD bus. The terminal is set to “Hi-Z” if #CD=“H”(media

not-inserted).

#FWE/MM

CMD

116

SmartMedia™

WRITE

ENABLE/SD

Memory Card

MultiMediaCar

d COMMAND

Indicates the write enable output signal to SmartMedia™ if used. Outputs “L”

if written to FD bus. If SD Memory Card and MultiMediaCard are used, it

becomes command/response input/output signal from/to SD Memory Card

and MultiMediaCard. The terminal is set to Hi-Z when #CD=“H” (media not

inserted).

#FBSY

105

SmartMedia™

BUSY

Indicates ready/busy input signal from SmartMedia™. Indicates the busy if ”0”

is inputted, or the ready if ”1” is inputted. Connects with the terminal via pull-up

resistor from SmartMedia™ ready/busy output.

#FWP

117

SmartMedia™

WRITE

PROTECT

Indicates write protect output signal to SmartMedia™. Write protection is

enabled except for the time when SmartMedia™ is accessed. The terminal is

set to “L” if #CD= “H”(media not inserted).

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