JVC MX-DVA9 Service Manual page 64

MX-DVA9/MX-DVA9R
BU2092BC (IC811) : PORT EXPANDER
1. Terminal Layout
Vss
1
DATA 2
CLOCK 3
LCK 4
Q0 5
Q1
6
Q2 7
Q3 8
Q4 9
BA3835S (IC812) : SPIIC
1.Terminal layout
BIASC 1
VREFC 2
3
RREF
4
N. C.
105Hz
BPF
N. C. 5
340Hz
BPF
A-C
1kHz
6
DIFOUT
BPF
3.4kHz
BPF
C
7
DIF
CIN
10.5kHz
BPF
A
8
AIN
VCC 9
1-64
CONTROL
CIRCUIT
B I A S
V R E F
REFFERENCE CURRENT
PEAK
HOLD
RES
PEAK
HOLD
RES
PEAK
MPX
HOLD
RES
PEAK
HOLD
RES
PEAK
HOLD
RES
DEC
2.Pin function
Pin No. Symbol
Vdd 1 Vss
18
2 DATA
3 CLOCK
17 OE
4 LCK
5~16 Q0~Q11
Q11
16
Q10
15
17 OE
Q9
14
18 Vdd
Q8
13
Q7
12
11 Q6
Q5
10
2.Pin function
Pin No. Symbol
1 BIASC
18
GND
VREFC
2
17 AOUT
3
RREF
16
TEST
4 NC
5 NC
15
N. C.
6 DIFOUT
7 CIN
8 AIN
14
N. C.
9 VCC
10 A
11 B
13 SEL
13 SEL
14 NC
15
NC
12
C
16 TEST
17 AOUT
18
GND
11
B
A
10
I/O Function
- Connect to GND
I Serial data input
I Shift clock of data
I Latch clock of data
Parallel data output
O
Latch data L
OUT PUT ON OFF
I Output enable
- Power supply
I/O Function
I Connection for decoupplig
capacitor that from reference
voltage linar section
I Connection for decoupplig
capacitor that from reference
voltage logic section
I Connection for reference
resistor that from band pass
filter fo
- Non connect
- Non connect
O Differntial amplifier output pin
Differntial amplifier input pin2
I
Differntial amplifier input pin1
I
- Power supply
I Output select control pin
Output select control pin
I
Output select control pin
I
- Non connect
Non connect
-
I TEST signal input
O MPX output pin
- Connect to GND
H