Document
E2D0082-29-93
¡ Semiconductor MSM9836-xxx
¡ Semiconductor Voice Synthesis IC with Built-in Mask ROM
This version: Sep. 1999 MSM9836-xxx Previous version: May. 1997
GENERAL DESCRIPTION
The MSM9836 is a PCM voice synthesis IC with built-in 3-Mbit mask ROM, D/A converter, and low-pass filter (LPF). The MSM9836 is specifically designed for applications that use a microcontroller. For this reason, functional support for standalone mode and RC oscillation has been omitted from the MSM9805, and the ROM capacity and the number of phrases have been increased. By using Oki's Sound Analysis and Editing Tool, ROM data such as Phrase Control Table can be easily set, created, edited, and evaluated. The following table lists the functional differences between the MSM9836 and the MSM9805.
MSM9836 ROM Capacity Interface Oscillation Maximum Number of Phrases Status Signal 3 Mbits Microcontroller Ceramic 127 NAR/BUSY simultaneous output MSM9805 2 Mbits Microcontroller/Standalone Ceramic/RC 63 Only NAR output when operating in microcontroller interface mode
FEATURES
• 8-bit OKI nonlinear PCM method/8-bit Straight PCM method • Sampling frequency : 4.0 kHz/5.3 kHz/6.4 kHz/8.0 kHz/10.6 kHz/12.8 kHz/ (Can be set for each phrase) 16.0 kHz • ROM capacity : 3 Mbits • Maximum playback time : 97.7 sec (fSAM = 4.0 kHz) 73.7 sec (fSAM = 5.3 kHz) 61.0 sec (fSAM = 6.4 kHz) 48.8 sec (fSAM = 8.0 kHz) • Master clock frequency : 4.096 MHz (Ceramic oscillation/external clock input) • Edit ROM function • Maximum number of phrases : 127 • Built-in current mode 10-bit D/A converter • Built-in low-pass filter • Power supply voltage : +2.0 to +5.5 V • Package : 24-pin plastic SOP (SOP24-P-430-1.27-K) (Product name: MSM9836-xxxGS-K) xxx indicates code number. Chip
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BLOCK DIAGRAM
I6 I5 I4 I3 I2 I1 I0
Address Controller
7
19-Bit Multiplexer
3-Mbit ROM (Including 17 Kbits of Edit ROM & Address ROM) 8
DATA Controller TEST ST NAR BUSY 19-Bit Address Counter I/O Interface PCM Synthesizer
10
XT XT Crystal Circuit Timing Controller
10-Bit DAC & LPF
MSM9836-xxx
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EXTCK
RESET
VDD
GND
VREF
AOUT
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MSM9836-xxx
PIN CONFIGURATION (TOP VIEW)
VDD XT XT NC TEST BUSY EXTCK ST NC 1 2 3 4 5 6 7 8 9 24 AOUT 23 VREF 22 GND 21 NC 20 NAR 19 NC 18 I6 17 RESET 16 NC 15 I5 14 I4 13 I3
I0 10 I1 11 I2 12
NC : No connection 24-Pin Plastic SOP
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MSM9836-xxx
PIN DESCRIPTIONS
Pin Symbol Type Description The IC enters the standby state if this pin is set to "L" level. At this time, oscillation 17 RESET I stops and AOUT output becomes GND level, then the IC returns to the initial state. Apply a "L" pulse upon power-on. This pin has an internal pull-up resistor. Signal output pin that indicates whether the 7-bit LATCH (see Block Diagram) is idle. 20 7 NAR EXTCK O I NAR at "H" level indicates that the LATCH is empty and ST input is enabled. Ceramic oscillator input/external clock input switching pin. Set to "H" level if ceramic oscillation.