2

ATSAM2193/ATSAM2193-G

2695A–DRMSD–06/03

Pin Description

44-lead TQFP Package

Table 1. Pin by Function - 44-lead TQFP Package

Pin Name

Pin Number

Type

Function

Power Supply Group

GND

9, 11, 20, 22,

30, 34, 38, 42

PWR

Digital ground - all pins should be connected to a ground plane.

VC3

10, 29

PWR

I/O power supply, 2.25V to 3.6V. All pins should be connected to a nominal 3.3V power.

VC2

1, 12, 32, 41,

44

PWR

Core power supply, 2.25V to 2.75V. All pins should be connected to nominal 2.5V. If the

built-in power switch is used for minimum power-down consumption, then all these pins

should be connected to the output of the power switch PWROUT (pin 36).

PWRIN

35

PWR

Power switch input, 2.25V to 2.95V. Even if the power switch feature is not used, this pin

must be connected to nominal 2.5V.

Serial MIDI, Parallel MIDI (MPU-401)

MIDI IN

17

IN

Serial TTL MIDI IN. Connected to the built-in synthesizer at power-up or after MPU reset.

Connected to the D0 - D7 bus (read mode) when MPU switched to UART mode. This pin

should be tied HIGH if not used.

D0 - D7

6, 8, 14, 16,

18, 21, 24, 26

I/O

8-bit bi-directional bus, under control of CS, RD, WR. These pins should be left

unconnected if not used.

A0

2

IN

This pin has built-in pull-down. Should be left unconnected if not used.

Select:

0 = data registers (read/write)

1 = status register (read), control register (write)

CS

4

IN

Chip select, active low. This pin has a built-in pull-down. It should be left unconnected if not

used.

RD

31

IN

Read, active low. When CS and RD are low, data (A0 = 0) or status (A0 = 1) is read on D0-

D7. Read data is acknowledged on the rising edge of RD. This pin has a built-in pull-down.

It should be left unconnected if not used.

WR

33

IN

Write, active low. When CS and WR are low, data (A0 = 0) or control (A0 = 1) is written from

the D0 -D7 bus to the ATSAM2193 on the rising edge of WR. This pin has a built-in pull-up.

It should be left unconnected if not used.

IRQ

28

OUT

A rising edge indicates that a MIDI byte is available for read on D0 - D7. Acknowledged by

reading the byte.

Digital Audio Group

CLBD

3

OUT

Digital audio bit clock.

WSBD

23

OUT

Digital audio left/right select.

DABD

27

OUT

Digital audio stereo output.

DACSEL

15

IN

DAC type:

0 = I2S 16 to 20 bits

1 = Japanese 16 bits

Miscellaneous Group

X1, X2

39, 40

-

9.6 MHz crystal connection. An external 9.6 MHz clock can also be used on X1 (2.5V

PP

max through 47 pF capacitor). X2 cannot be used to drive external circuits, use CKOUT

instead.