3

ATSAM9703

1710C–DRMSD–12/02

Pin Description

Pins by Function

Table 1. Power Supply Group

Pin Name

Pin Number

Type

Function

GND

2, 6, 8, 16, 20, 22, 26,

28, 38, 46, 49, 53, 59,

71, 75, 82, 83, 94

PWR

Digital Ground

All pins should be connected to a ground plane.

VCC

1, 7, 15, 21, 27, 37,

48, 52, 58, 70, 74, 81,

95

PWR

Power Supply, 3V to 5.5V

All pins should be connected to a VCC plane.

VC3

9, 19, 24, 77

PWR

Core Power Supply, 3.3V ± 10 %.

All pins should be connected to +3.3V. If 3.3V is not available, then it can be

derived from 5V by two 1N41418 diodes in series.

Table 2. Serial MIDI

Pin Name

Pin Number

Type

Function

MIDI IN

17

IN

Serial TTL MIDI IN. All controls are received by this pin.

Table 3. External ROM/RAM Group

Pin Name

Pin Number

Type

Function

WA[24:0]

47, 50, 51, 54 - 57,

60 - 69, 72, 73, 76,

78 - 80, 84, 85

OUT

External ROM/RAM address for up to 32M words (64 MB) of memory. ROM

memory holds firmware and PCM data. RAM memory holds working

variables and effect delay lines.

WD[15:0]

86 - 93, 96 -100, 3 - 5

I/O

External ROM/RAM data. Holds read data from ROM or RAM when WOE is

low, writedatatoRAM when WWE is low.

WCS0

34

OUT

External ROM chip select, active low.

WCS1

35

OUT

External RAM chip select, active low.

WOE

36

OUT

External ROM/RAM Output enable, active low.

WWE

33

OUT

External RAM write, active low

RBS

25

OUT

RAM byte select. Used as lower address from RAM when 8-bit wide RAM is

connected.

Table 4. Digital Audio Group

Pin Name

Pin Number

Type

Function

CLBD

23

OUT

Digital audio bit clock

WSBD

32

OUT

Digital audio left/right select

DABD0

30

OUT

Digital audio main stereo Output

DABD1

31

OUT

Auxiliary digital stereo Output. Reserved for surround effects.

DAAD

29

IN

Digital audio two channels input. Up to eight channels of audio can be input

to the chip by using pins P1 to P3 alternate function.