SPC122A Sunplus Technology Co., Ltd., SPC122A Datasheet - Page 7

• Manufacturer Part Number: SPC122A
• Description: SOUND CONTROLLER WITH 128KB FLASH MEMORY
• Manufacturer: Sunplus Technology Co., Ltd.

*Values shown are for VDD = 5.0V test conditions only.
© Sunplus Technology Co., Ltd.
Proprietary & Confidential
Input/Output IOB port : IOB5 - 4
Input/Output IOC port : IOC3 - 0
Input/Output IOD port : IOD3 - 0
Input/Output IOD port : IOD7 - 4
OD : Open Drain
OD : Open Drain
OD : Open Drain
input data
OD : Open Drain
input data
input data
input data
logic_3
control
logic_4
control
logic_5
control
logic_6
control
output
output
output
output
data
data
data
data
OD-NMOS
OD-NMOS
OD-PMOS
OD-PMOS
buffer or
or buffer
or buffer
or buffer
60K
VDD
60K
90K
60K
7
6.8. Multi-Duty Cycle Mode
The SPC122A offers three unique output waveforms, 1/2, 1/3, and
1/4 duty cycles. The Control Register should be configured to
select 1/2, 1/3, or 1/4 duty cycle and the IOA2 should be
programmed as the multi-duty cycle output port. Programmers
can use the combinations of these duty cycles for remote-control
purpose.
6.9. 1/2, 1/3, 1/4 Duty Cycle Outputs
6.10. Serial Interface I/O
The SPC122A provides serial interface I/O mode for extending
size of ROM/RAM.
read/write data from/to extra memory. The interface I/O Register
is the control register for programming interface I/O.
6.11. Speech and Melody
For speech synthesis, the SPC122A can provide NMI for precise
sampling frequency. Users can record or synthesize the sound
and store it into ROM.
according to the program's design.
recommended for high fidelity and compression of sound such as
PCM, LOG PCM, and ADPCM.
For melody synthesis, the SPC122A offers two-channel(dual) tone
mode. After selecting the dual tone mode, users only need to fill
either TMA or TMB, or both TMA and TMB to generate specific
frequency for each channel. The hardware will toggle the tone
wave automatically without entering into an interrupt service
routine. Users are able to simulate musical instruments or sound
effects by simply controlling the envelope of tone output.
1/2 duty cycle
1/3 duty cycle
1/4 duty cycle
Clock
Serial Interface I/O Port can be used to
The sound data can be played back
Several algorithms are
Preliminary Version: 0.9
P
P
SPC122A
r
r
e
e
l
l
i
i
SEP. 07, 2001
m
m
i
i
n
n
a
a
r
r
y
y