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• Specifications

• Block diagram

• Descriptions of the signals

General descriptions of the data format

Support the SD memory only (SDIO and secure are not sup-

ported)

SD clock

Approx. 16MHz (Support up to 25MHz at the maximum)

Transfer

512 bytes/sector

SDCD (Card detection signal)

"L": detection

WP (Write protect)

"L": protect
However, the writing direction is meaningless since it is not sup-
ported

SDCLK

Communications clock

SDCMD

Signal to make communications between the controller side 
and the card side

SDDAT0

Data signal for serial communications

SDDATx

At the time of 4-bit parallel communications

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• The extension CPU (IC3) detects that the SDCD signal becomes "L" through the SD card connection.
• The extension CPU (IC3) starts a negotiation with the connected card.

The extension CPU (IC3) issues a command on the SDCMD line.
The SD card side returns the status on the SDCMD line to respond to the command.

• The extension CPU detects the SD card and receives the data adjusted to the card format information.

• Outline drawing of the data flow

Waveform at the time of Read

43

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• Never touch the power cord during a lightning storm.
• When you operate this product, the wall outlet should be near the product and easily accessible.
• Use only the included AC adaptor and power cord.

You can connect the printer to a PictBridge compatible digital camera or digital video camera to print recorded images.