st2064b Sitronix Technology Corporation, st2064b Datasheet - Page 29
st2064b
Manufacturer Part Number
st2064b
Description
8 Bit Microcontroller With 64k Bytes Rom
Manufacturer
Sitronix Technology Corporation
Datasheet
1.ST2064B.pdf
(57 pages)
- Current page: 29 of 57
- Download datasheet (895Kb)
13.3 Noise Generator Control
13.3.1 General description
Noise generator is shown in FIGURE 13-5, which base
frequency is controlled by PSG1[5~0]
13.3.2 Noise Generator Programming
DACE defines noise or DAC function. Writing a “ 1” to C1EN
13.4 PSG Applicaion Circuit
Sounds of two channels are modulated by PSGCK and
combine together into one AC signal. Then it outputs on
Ver. 3.0
PSG1[5~0]
PSGCK
C1N[5~0]
CLOCK
Noise Prescaler
NCK Frequency = PSGCK/(40H-PCH1[5~0])
OUTPUT
ST2064B
FIGURE 13-6 PSG application circuit
PSGOB
FIGURE 13-5 Noise Generator
PSGO
NCK
29/57
CLOCK
will enable noise generator when PSG is in noise mode
PSGOB and PSGO. Positive part of the AC signal is output
from PSGO while the negative part is from PSGOB.
16-Stage White Noise Generator
Buzzer
OUTPUT
Noise out
ST2064B
5/8/09
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