MITSUBISHI SOUND PROCESSOR ICS
M65831AP/FP
DIGITAL ECHO (DIGITAL DELAY)
PIN DESCRIPTION
Symbol
Function
Name
No.
I/O
Supply voltage
1
VDD
Digital VDD
2
3
XIN
Oscillator input
Oscillator output
I
O
I
Connects to 2MHz ceramic filter
XOUT
Easy mode:inputs D1 data
µ -COM mode:inputs request data
4
5
6
Delay1/Request
D1/REQ
Easy mode:inputs D2 data
µ -COM mode:inputs shift clock
Delay2/Shift clock
D2/SCK
I
I
Easy mode:inputs D3 data
µ -COM mode:inputs serial data
D3/DATA
Delay3/Serial data
Easy mode:inputs D4 data
µ -COM mode:controls ID code
Delay4/ID switch
Test
7
8
9
D4/IDSW
TEST
I
I
I
L=normal mode
H=easy mode
L=µ -COM mode
EASY/ µ -COM Easy/ µ -COM
H=sleep mode
L=normal mode
Sleep
10
SLEEP
I
11
12
13
14
15
16
17
18
19
20
21
22
23
24
Digital GND
Connects to analog GND at one point
Connects to analog GND
D GND
A GND
Analog GND
Low pass filter2 output
Low pass filter2 input
OP-AMP2 output
OP-AMP2 input
Current control 2
Current control 1
Reference
LPF2 OUT
LPF2 IN
OP2 OUT
OP2 IN
CC2
O
I
O
I
Forms low pass filter with external C.R
Forms integrator with external C.R
CC1
=1/2VCC
REF
OP-AMP1 input
OP-AMP1 output
Low pass filter1 output
Low pass filter1 input
Analog VCC
OP1 IN
OP1 OUT
LPF1 OUT
LPF1 IN
VCC
I
Forms integrator with external C.R
O
O
I
Forms low pass filter with external C.R
Supply voltage
MITSUBISHI
ELECTRIC
4
MITSUBISHI [ Mitsubishi Group ]
