sh6613 SinoWealth Micro-Electronics Corp. Ltd, sh6613 Datasheet - Page 9

• Manufacturer Part Number: sh6613
• Description: 4k 4-bit Microcontroller With Lcd Driver
• Manufacturer: SinoWealth Micro-Electronics Corp. Ltd

8. Programmable sound generator(PSG)
PSG has channel1 and channel2. The function block diagram is as follows.
The PSG function provides four subfunctions for wide application.
Programmable sound
Program sound is created by two channels. Every channel can be programmed as follows.
Enable/Disable every channel sounds.
Select every channel sound frequency.
Two channel sounds are mixed into one PSG output.
The PSG output can be controlled at 4 volume levels.
Fine noise
PSG can provide wide-band noise.
The wide-band noise volume can be controlled at 4 volume levels.
Alarm
PSG can provide many alarm functions by software.
The alarm carrier frequency can be programmed individual.
The alarm volume can be controlled at 4 volume levels.
Remote control
The remote control is the only expandable application for PSG sound. Since the remote control frequency is 56.13KHz or
37.92KHz, the software could select the sound frequency.
8.1 PSG subblock diagram
MPX block diagram
The MPX block selects 4 clock sources as PSG clk that provides for the two channel clk sources.
SEL1
0
0
1
1
SEL0
OSCX
OSC
0
1
0
1
OSCX
OSC
Clk source
/16
OSCX/16
/2
OSC/2
OSCX
OSC
SEL0
CLK-SLECTOR
MPX
SEL1
CHANNEL1
CHANNEL2
OSC=32.768K
OSC=32.768K
OSCX=455K
OSCX=455K
OSCX=1.8M
OSCX=1.8M
OSC=262K
OSC=262K
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PSG CLK
CH1 CLK
CH2 CLK
MIXER
PSG clk
32.768K
16.384K
112.5K
28.4K
262K
131K
455K
1.8M
PSG
PSG
SH6613/B/C
V1.2