KRF-X7775D/X7775D-S/VR-5080/5090
11
CIRCUIT DESCRIPTION
Port No.
Port Name
I/O
Function
ACTIVE
H
L
1
ERF
I
D.I.R. (X08, IC6) error flag.
2
FS96 DET
I
96KHz fs detection. H : fs>88.1kHz detection
3
AUTO
I
Non-PCM detection. H : Non-PCM detection
4
AVSS
-
GND
5
DIR PD
O
Power down for D.I.R. (X08, IC6).
L : DIR power down and reset
6
DIR CS
O
Chip select for D.I.R. (X08, IC6). L : Chip selection
7
AVREF
-
Reference voltage.
8
DIR DIN
I
Data input from D.I.R. (X08, IC6).
9
DIR DOUT
O
Data output for D.I.R. (X08, IC6).
10
DIR CLK
O
Clock output for D.I.R. (X08, IC6).
11
D MUTE
O
Mute signal output for D.I.R. (X08, IC6).
Data mute
12
DAC PD
O
Power down for D/A converter (X08, IC11/14/17/20).
Power
down
13
DAC 96K
O
Double speed sampling mode for D/A converter speed mode
(X08, IC11/14/17/20). H : Double
14
DAC MUTE
O
Mute signal output for D/A converter
Mute
(X08, IC11/14/17/20).
15
ADC RST
O
Reset signal output for A/D converter (X08, IC7).
Reset
16
MDT
I
Main microcomputer master data.
17
SDT
O
Sub microcomputer data output.
18
MCK
I
Main microcomputer control data clock
19
MREQ
I
Main microcomputer master request.
20
SREQ
O
Main microcomputer slabe request.
21
REC 6dB
O
Rec gain control when HDCD +6dB.
+6dB on
22~24
DSEL A~C
O
Control port for digital input selector (A~C).
25
DSP POWER
O
Power supply for DSP/DAC/ADC/DIR.
26
DSP RESET
O
Reset signal output for DSP.
27~32
DSP D0~D5
I/O DSP control data.
33
VSS
-
GND
34,35
DSP D6,7
I/O DSP control data.
36
DSP REQ
O
DSP communication request.
Request
37
DSP ACK
I
Input port of command data reading from DSP.
Ack.
38
DSP BUSY
I
DSP status busy.
Busy
39
DSP WRT
O
DSP Write
Data write
Data read
40
DTS DET
I
DSP DTS detection.
DTS
41
PCM ZERO
I
PCM zero data detection.
PCM 0
42
HDCD DET
I
DSP HDCD sync. Detection.
HDCD
43
HDCD 6dB DET
I
DSP HDCD +6dB detection. (KPCM)
+6dB
44
OVER LEVEL
I
DSP over level detection.
Over level
45
PCM MUTE
O
DSP mute control (PCM).
Fixed
46
DRIVE
O
DSP D.R.I.V.E. /HDCD control (PCM).
D.R.I.V.E/
HDCD ON
47
SUB MUTE
O
Sub microcomputer analog mute.
Mute on
48~50
C ROOMB(C/B/A)
O
Zone B video selector control.
51,52
YC SEL(B, A)
O
Zone A video selector control.
53~59
C ROOMA(A~G)
O
Zone A video selector control.
60
RESET
I
Reset signal input.
61
YC MUTE
O
Zone A video selector (Y/C) mute control.
62
FSC CTRL
O
Zone A video selector FSC control.
63
VSEL
O
Zone A video selector control.
64
CTRL A2
O
Zone A video selector control A2.
65
CTRL B
O
Zone A video selector control B.
66
CTRL A
O
Zone A video selector control A.
8-2 Port Description of Sub Microcomputer : uPD784224K50
7
(X08,IC43)
