Kenwood KRF-V7771D Service Manual page 12

6-2 Pin description
Pin No. Name I/O
1 25/26 O ASIC KAG09 CS4925/CS4226 SELECT
2 N.C. I —
3 A15 O EX ROM ADDRESS SET
4 AVSS — —
5 A16 O EX ROM ADDRESS SET
6 A17 O EX ROM ADDRESS SET
7 AVREF1 — +5V
8 CS_SCDIN I CS4226 & CS4925 SERIAL DATA IN
9 CS_SCDOUT O CS4226 & CS4925 SERIAL DATA OUT
10 CS_SCCLK O CS4226 & CS4925 SERIAL CLOCK
11 MDT I Microprocessor communication MASTER DATA
12 SDT O Microprocessor communication SLAVE DATA
13 MCK I Microprocessor communication MASTER CLOCK
14 MREQ I Microprocessor communication MASTER REQUEST
15 SREQ O Microprocessor communication SLAVE REQUEST
16 DSP_SO I DSP56007(THX,Re-EQ) MASTER IN SLAVE OUT
17 DSP_SI O DSP56007(THX,Re-EQ) MASTER OUT SLAVE IN
18 DSP_CK O DSP56007(THX,Re-EQ) CLOCK
19~26 N.C. I —
27 DSP_RST O DSP56007(THX,Re-EQ) RESET
28 DSP_SS O DSP56007(THX,Re-EQ) SLAVE SELECT
29 DSP_HR I DSP56007(THX,Re-EQ) HOST REQUEST
30 PEAK_LEVEL O PEAK LEVEL LED driver
31,32 N.C. I —
33 VSS GND
34~38 N.C. I —
39 (9992/7771) I (9992/7771) model non use
40~46 N.C. I —
47 SUB_MUTE SUB MUTE Control
48-52 N.C. I —
53 CS_PDN O CODEC CS4226 POWER DOWN
54 CS_FREQ1 I CODEC CS4226 FS CHECK1
55 CS_FREQ0 I CODEC CS4226 FS CHECK0
56 N.C. I —
57 CS_26 O CODEC CS4226 CHIP SELECT
58,59 N.C. I —
60 RESET I RESET
61 CS_OVL/ERR I CODEC CS4226 OVER LEVEL/ERROR Detector
62 CS_AUDIO I CODEC CS4226 AUDIO/NO AUDIO Detector
63 CS_AC3 I CODEC CS4226 AC-3/MPEG Detector
64 DATA_IN I CODEC CS4226 DATA output detector
65 ABOOT_I I/O DSP CS4925 AUTO BOOT/INTREQ
66 CS_RST O DSP CS4925 RESET
67 CS_25 O DSP CS4925 CHIP SELECT
68 VDD — +5V
69,70 X2,1 — CERAMICS CLOCK OSCILLATION
71 IC(VPP) — GND
72,73 XT2,1 — N.C.
74 AVDD — +5V
75 AVREF0 — GND
76 DSA O DIGITAL INPUT SELECTOR TC74HC153AF
77 DSB O DIGITAL INPUT SELECTOR TC74HC153AF
78 DSG O DIGITAL INPUT SELECTOR TC74HC153AF
79 DI/AI O INPUT SELECTOR DIGITAL/ANALOG SELECT TC74HC153AF
80 INT/BOOT O CS4925 INTRQ/AUTO BOOT SELECT
Description
L : Transmitting data to CS4925
H : Transmitting data to CS4226
6-3 PORT CONTROL
6-3-1 Pin3,5,6 EX ROM CONTROL CS492501 (x08 : IC30 ) CONDITION : BOOT
A15 (pin3) A16 (pin5) A17 (pin6)
AC-3 / PCM L L
MPEG H H
DSP MODE H L
6-3-2 Pin76-79 TC74HC153AF (X08 : IC26) CONTROL
INPUT TYPE SEL.OUTPUT DI/AI(pin79)
EXCEPT
CD1
ANALOG ONLY VIDEO2
VIDEO3
V IDEO4
CD1
VIDEO2
ANALOG
VIDEO3
VIDEO4
CD1
VIDEO2
DIGITAL
VIDEO3
VIDEO4
L
L
L
DSG(pin78) DSB(pin77) DSA(pin76)
H H OPTION
H H OPTION
L L H
L L L
L L L
L L H
OPTION
OPTION
H
H
L
L