Yamaha YMC-700 Service Manual page 56

YMC-700/YMC-500
QQ
3 7 63 1515 0
IC354: SN74AHCT574PWR (DIGITAL P.C.B.)
Octal edge-triggered D-type flip-flops with 3-state outputs
Pin No.
1
2
3
4
5
6
7
8
9
10
TE
11
L 13942296513
12
13
14
15
16
17
18
19
20
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1
OE
11
CLK
C1
2
1D
1D
C8
9
8D
8D
Port Name Function Name
OE /EXPE
1D D00
2D D01
3D D02
4D D03
5D D04
6D D05
7D D06
8D D07
GND DGND
CLK NPGA_EXSTB
8Q 5TUNER_CS
7Q 5PWM_N_PDN
6Q 5TUNER_MT
5Q 5PWM_N_MT
4Q 5PRE_SW_N_MT
3Q 5PWM_N__RST
2Q 5ISEL_B
1Q 5ISEL_A
VCC VCC
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y
i
2 9
8
OE 1 20
1D 2 19
2D
3 18
19
3D 4 17
1Q
4D 5 16
5D 6 15
6D 7 14
8 13
7D
8D 9 12
12
GND 10 11
8Q
Detail of Function
Extended port enable
Data bus 00
Data bus 01
Data bus 02
Data bus 03
Data bus 04
Data bus 05
Data bus 06
Data bus 07
Ground of external
Q Q
Bank select 0
3 6 7 1 3 1 5
Tuner chip select
PWM modulator power down
Tuner mute
Digital AMP mute
Subwoofer mute
PWM modulator reset
Audio input selector
Audio input selector
Power supply +5V
co
.
9 4 2 8
V
CC
1Q
2Q
3Q
4Q
5Q
6Q
7Q
8Q
CLK
0 5 8 2 9 9 4 2 8
m
9 9
9 9