Service manual

CD-BK2100V
– 54 –
ICK1 VHiM65856SP-1: Mic Amp. (M65856SP) (2/2)
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
Function
33 KEY CONIN Input Monaural input for external KEY CONTROL IC
Input/Output interface terminal for external KEY CONTROL IC
34 SOURCEOUT Output Monaural input for external KEY CONTROL IC
Input/Output interface terminal for external KEY CONTROL IC
35 ROUT Output Rch mixing output
36 LOUT Output Lch mixing output
37 VCFIL — Vocal cut filter
Processes frequencies lower then the vocal band
38* PS1 Input Phase shift input 1
Determines a constant at time of phase shift
39* PS2 Input Phase shift input 2
Determines a constant at time of phase shift
40 LATCH Input Latch input via serial bus
41 CLOCK Input Clock input via serial bus
42 DATA Input Data input via serial bus
42
DATA
41
CLOCK
40
LATCH
39
PS2
38
PS1
37
VCFIL
36
LOUT
35
ROUT
34
SOURCEOUT
33
KEYCONIN
32
RIN
31
LIN
30
VOLIN
29
LPF2OUT
28
LPF2IN2
27
LPF2IN1
26
DAINTOUT
25
DAINTIN
24
DACONT
23
VCC
22
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
GND
MIC SW
MCLKCONT
VALC
MIC1IN
ALC1
MCLK
MIC
VOL
MIC SW
(L,R)/2
L R STEREO
MIC1NFIN
MIC1OUT
MIC1VOLIN
MIC2IN
ALC2
MIC2NFIN
MIC2OUT
MIC2VOLIN
MICOUT
LPF1IN1 LPF1IN2
LPF1OUT
ADINTOUT
ADINTIN
ADCONT
REF
MICRO-
COMPUTER I/F
PHASE
SHIFTER
SURROUND
ALC
ALC
MIC
VOL
ECHO
VOL
ECHO
F.BVOL
LPF
16kbit
SRAM
MAIN LOGIC
LPF D/A
VCC GND
ND
1/2Vcc
Figure 54 BLOCK DIAGRAM OF IC
Port NamePin No.
Input/Output