ATSAM3303 datasheet(7/25 Pages) ATMEL

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ATSAM3303

6091A–DRMSD–07/04

Slave 8-bit interface read, active low. D7 - D0 data is output when RD

goes low and CS is low

R|B

SmartMedia Ready Busy/ status

P0.13

General-purpose input pin

IRQ

Out

Slave 8-bit interface interrupt request. High when data is ready to be

transferred from chip to host. Reset by a read from host (CS = 0 and RD = 0)

SMRE

Out

SmartMedia read enable (RE), active low

FS0

Freq sense, sensed at power up. Together with FS1, allows the

firmware to know the operating freq of the chip (see FS1).

P0.8

I/O

General-purpose I/O pin

INT

Out

Serial slave synchronous interface data request, active low

MIDI_IN

Serial MIDI in

P0.14

General-purpose input pin

SDIN

Serial slave synchronous interface input data

MIDI_OUT

Out

Serial MIDI out

FS1

Freq sense, sensed at power up. FS1/FS0 allow firmware to know

operating frequency of chip as follows:

6.9552 MHz

9.6 MHz

11.2896 MHz

12.288 MHz

P0.9

I/O

General-purpose I/O

DABD3 - 0

67, 66, 65, 64

Out

Four stereo channels of digital audio output, I2S format

CLBD

Out

Audio bit clock for DABD3 - 0. Audio bit clock for DAAD3 - 0 if the

corresponding CLAD3 - 0 is not used.

WSBD

Out

Audio left/right channel select for DABD3 - 0. Audio left/right channel for

DAAD3 - 0 if the corresponding WSAD3 - 0 is not used.

CKOUT

Out

External DAC/Codec master clock. Same frequency as X2 pin. Can be

programmed to be 128 x Fs, 192 x Fs, 256 x Fs, 384 x Fs, where Fs is

the DAC/Codec sampling rate.

DAAD0

Stereo audio data input, I2S format. Can operate on CLBD master rate

or CLAD0 external rate when sampling rate conversion is requested.

P0.15

General-purpose input pin

DAAD3 - 1

60, 59, 55

Three additional channels of stereo audio input, I2S format. Can

individually operate on CLBD master rate or corresponding CLAD3 - 1

when sampling rate conversion is requested.

DAAD3 - 1 have built-in pull-downs. They may be left open if not used.

MUTE

I/O

External DAC/Codec Mute. Sensed at power up. If found high, then

MUTE becomes an active high output. If found low, then MUTE

becomes an active low output.

P1.6

I/O

General-purpose I/O pin

WA21

Out

External memory address bit, extension to 64 Mbits

Table 2. Pinout by Pin Name

Pin Name

Pin Number

Type

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