M65850 Mitsubishi, M65850 Datasheet - Page 6

• Manufacturer Part Number: M65850
• Description: DIGITAL ECHO(DIGITAL DELAY)
• Manufacturer: Mitsubishi

(2) Clock oscillator circuit
oscillator circuit in it, thus providing circuit configuration just by
connecting a resistor for current control to pin 13 ( FP:pin 14 )
CLOCK.
Fully internal clock supply prevents occurrence of undesired
radiation without affecting any external circuit.
following equation.
,as shown below.
(1) Delay time Td
The resistor for current control can be calculated using the
K is the coefficient, and changes according to clock frequency
FUNCTION DESCRIPTION
The M65850P incorporates a current control type clock
The oscillator frequency is:
The delay time can be calculated by the equation :
When fck=1MHz ( fs=125kHz), Td can be set at 164ms.
« Reference »
The M65850P/FP adopts ADM ( Adaptive Delta Modulation ) system in A-D,D-A
converters.
The sampling frequency can be calculated by the following equation :
For clock frequency ( fck )=1MHz, the calculated sampling frequency is :
Delay Time
Td=8N / fck ( N=the number of memory bits=20480 )
101~200
31~100
15~30
fs=clock frequency / 8 ( Hz )
fs=1MHz / 8 =125kHz
( ms )
Rc
fck = 1 MHz. ( Rc=120k )
•
•
K/Clock frequency (fck) [ Hz ]
Clock Frequency
DIGITAL ECHO(DIGITAL DELAY)
11.0M~5.5M
1.62M~800K
5.3M~1.64M
( Hz )
MITSUBISHI
ELECTRIC
M65850P/FP
0.8 X 10
1.0 X 10
1.2 X 10
K value
MITSUBISHI SOUND PROCESSOR ICs
11
11
11
Rc
*
(FP:14)
Rc (
75k~150k
7.5k~15k
18k~62k
Vcc
13
*
(
Clock
frequency : fck
6
Clock
oscillator
circuit
KARAOKE
50
)
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S E R I E S
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