23
23
AVR-3805 / AVC-3890
M30620FC
Terminal Function
75
76
100
1
25
26
50
51
M30620FC
(AD: IC8
25
)
Pin
Pin Name
Symbol
I/O Type
Det
Op
(Int.)
Op
(Ext.)
Res
Function
1
P94/TB4
DSP MS
O
C
-
-
-
Z
DSP control pin
2
P93/TB3
DACCS
O
C
-
-
-
Z
DAC control pin (AD1854: Chip select)
3
P92/SOUT3
DACMDI
O
C
-
-
-
Z
DAC control pin (AD1854)
4
P91/SIN3
DIGITAL REC INH
O
C
-
-
-
Z
DIGITAL INH: Control
5
P90/CLK3
DACMC
O
C
-
-
-
Z
DAC control pin (AD1854)
6
BYTE
BYTE
-
-
-
-
-
-
GND (Ext. data bus bit width switching, 16bit: L)
7
CNVCS
CNVSS
-
-
-
-
-
-
Single-chip/Micro-processor mode switching
(Normal single-chip: L, Rewrite boot program start:
H input set)
8
P87
DAC-RESET1
O
C
-
-
-
Z
DAC control pin ("L": Power Down mode,
"
↑
(rising edge)": Reset, "H": Normal)
O
C
-
-
-
Z
Not used
I
-
-
-
-
L
Reset input (Reset: L)
O
-
-
-
-
-
Oscillator connection
-
-
-
-
-
-
GND
I
-
-
-
-
-
Oscillator connection
-
-
-
-
-
-
+5V
I
-
-
-
-
-
Not used (Fixed to H)
I
-
E
↓
&L
-
Eu
Z
DIR control pin (LC89057W-E)
I
-
E
↓
&L
-
Ed
Z
Main/Sub-
μ
com comm. control input
(ACK from MAIN
μ
com L return)
I
-
Lv
-
Eu
Z
Power down detect (Power down: L)
19 P81
ADC RESET
O
C
-
-
Eu
Z
A/D control pin (Reset: L)
20 P80
OSR
O
C
-
-
Eu
Z
A/D control pin (PCM1804) 96kHz: H
21 P77
DIGITAL POWER
O
C
-
-
Ed
Z
DIGITAL power on/off switching (H: ON)
22 P76
FGAIN
O
C
-
-
Ed
Z
IV AMP GAIN switching control output (Subwoofer YES: L)
23 P75
AD OVER L
I
-
Lv
-
Eu
Z
AD OVERLOAD detect control (For L ch OVERLOAD: H)
24 P74
AD OVER R
I
-
Lv
-
Eu
Z
AD OVERLOAD detect control (For R ch OVERLOAD: H)
25 P73/CTS2
MIC ON
O
C
-
-
-
Z
MIC input used: H Others: L
26 P72/CLK2
P.D MUTE
O
C
-
-
-
Z
MIC/AD input switching control pin
MIC pin input, DIGITAL POWER OFF: L Others: H
27 P71/RXD2
VPP
O
C
-
-
-
-
Normal: H Writing flash ROM for DSP: L
28 P70/TXD2
RSVDSP
O
C
-
-
-
-
Not used
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