Features
•
All-in-one Design
– MIDI Control Processor
– Synthesis
– Compatible Effects: Reverb + Chorus
– Programmable Spatializer or Four-channel Surround
(1)
– Four-band Stereo Equalizer
State-of-the-art Synthesis Supplies Best Quality for Price
– 34-voice Polyphony + Effects
– Up to 1 MB Wavetable/Firmware Support
Synthesizer Chipset: SAM9713 + 8-Mbit ROM + 32K x 8 SRAM + DAC
Hardware-programmable DAC Mode
– I2S 16 to 20 bits
– Japanese 16 bits
Firmware/Sample Set Available for Turnkey Designs
– 8-Mbit GS
®
GMS960800B
(2)
– 8-Mbit CleanWave
®
GMS970800B
Typical Applications: Cost-sensitive Portable Karaoke/VCD Karaoke
80-lead TQFP Package: Small Footprint, Easy Mounting
Ideal for Battery Operation
– Low Power
– Power-down Mode
– Wide Supply Voltage Range: 3V to 4.5V Core, 3V to 5.5V Periphery
1. Four-channel surround requires additional DAC.
2. GMS960800B with express permission of Roland Corporation. Special licensing
conditions apply. Refer to warning on last page of this datasheet.
•
•
•
•
•
•
•
Low-cost
Integrated
Synthesizer
with Effects
SAM9713
Notes:
Description
The highly integrated architecture of the SAM9713 combines a specialized high-per-
formance RISC digital signal processor and a general-purpose 16-bit CISC control
processor on a single chip. An on-chip memory management unit allows the digital
signal processor and the control processor to share external ROM and RAM devices.
The ROM bus width should be 16 bits while the SRAM can be selected to be 8 or 16
bits wide. When using an 8-bit SRAM, fast type (static cache) should be selected
because two SRAM cycles will be completed in one ROM cycle duration.
Running at 300 million operations per second (MOPS), the digital signal processor
supports high-quality PCM synthesis as well as most important functions like reverb,
chorus, surround effect and equalizer. By adding an additional stereo DAC, four-
channel audio surround can also be obtained.
The SAM9713 operates from a low-frequency 9.6 MHz typical crystal. A built-in PLL
raises this frequency to a 38.4 MHz internal clock that controls the two processors.
Care has been taken that output pin signals change only when necessary. This mini-
mizes RFI (radio frequency interferences) and power consumption. Minimizing RFI is
mostly important in order to comply with standards such as FCC, CSA and CE.
The core power supply for the SAM9713 should range from 3V to 4.5V; the periphery
supports’ supply from 3V to 5.5V. Therefore, by selecting 3.3V ROM, SRAM and DAC,
it is possible to develop low-power/low-voltage portable applications.
Rev. 1712A–12/00
1
Figure 1.
Typical Hardware Configuration
1 MB
ROM
32K x 8
RAM
MIDI IN
SAM9713
Stereo
DAC
Audio
Out
Pin Description
Pins by Function
Table 1.
Power Supply Group
Pin Name
GND
V
CC
V
C3
Pin Number
5, 14, 21, 23, 36, 38,
57, 61, 62, 65, 74
1, 6, 13, 18, 22, 32,
56, 6480
7, 17, 63
Type
PWR
PWR
PWR
Function
Digital Ground
All pins should be connected to a ground plane.
Power Supply, 3V to 5.5V
All pins should be connected to a VCC plane
Core Power Supply, 3V to 4.5V
All pins should be connected to nominal 3.3V. If 3.3V is not available, then
V
C3
can be derived from 5V by two 1N4148 diodes in series.
Table 2.
Serial MIDI
Pin Name
MIDI IN
Pin Number
15
Type
IN
Function
Serial TTL MIDI IN. All controls are received by this pin.
Table 3.
External ROM/RAM Group
Pin Name
WA0 - WA18
Pin Number
37, 39, 41 - 55, 58, 59
Type
OUT
Function
External ROM/RAM address for up to 512K words (8M bits) of memory. ROM
memory holds firmware and PCM data. RAM memory holds working
variables and effects delay lines.
External ROM/RAM data. Holds read data from ROM or RAM when WOE is
low, writes data to RAM when WWE is low.
External ROM chip select, active low.
External RAM chip select, active low.
WD0 - WD15
WCS0
WCS1
66 - 73, 75 - 79, 2 - 4
29
30
I/O
OUT
OUT
2
SAM9713
SAM9713
Pin Name
WOE
WWE
RBS
Pin Number
31
28
20
Type
OUT
OUT
OUT
Function
External ROM/RAM output enable, active low.
External RAM write, active low.
RAM byte select. Used as lower address from RAM when an 8-bit wide RAM
is connected.
Table 4.
Digital Audio Group
Pin Name
CLBD
WSBD
DABD0
DABD1
DAC/DAAD
Pin Number
19
27
25
26
24
Type
OUT
OUT
OUT
OUT
IN
Function
Digital audio bit clock
Digital audio left/right select
Digital audio main stereo output
Auxiliary digital stereo output. Reserved for surround effects.
DAC type: 0 = I2S 16 to 20 bits, 1 = Japanese 16 bits
Can also be used as digital audio input if 32K x 16 RAM is connected.
Table 5.
Miscellaneous Group
Pin Name
X1 - X2
LFT
RESET
PDWN
Pin Number
10, 9
8
11
12
IN
IN
Type
Function
9.6 MHz crystal connection. An external 9.6 MHz clock can also be used on
X1 (3.3V input). X2 cannot be used to drive external circuits.
PLL external RC network
Reset input, active low. This is a Schmitt trigger input, allowing direct
connection of an RC network.
Power-down, active low. When power-down is active, then all output pins will
be floated. The crystal oscillator will be stopped. To exit from power-down,
PDWN should be high and RESET applied.
Test pins. Should be grounded.
When high, indicates that the synthesizer is up and running.
TEST0 -
TEST2
RUN
33, 34, 35
16
IN
OUT
3
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