Yamaha neoHD YMC-700, Руководство по обслуживанию

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55
YMC-700/YMC-500
YMC-70
0/YMC-50
0
1 OE
2 D0
D1
D2
D3
D4
D5
D6
D7
3
4
5
6
7
20 Vcc
19
18
17
16
15
14
8
9
10
13
12 Q7
Q6
Q5
Q4
Q3
Q2
Q1
Q0
11 CP GND
Extended Ports 2 are accessed using NPGA Extended strobe function.
NPGA must be initialized before using EXT Ports 2
• Microprocessor extended port 1
Pin No. Port Name Function Name Detail of Function
1 OE /EXPE Extended port enable
2 D0 D00 Data bus 00
3 D1 D01 Data bus 01
4 D2 D02 Data bus 02
5 D3 D03 Data bus 03
6 D4 D04 Data bus 04
7 D5 D05 Data bus 05
8 D6 D06 Data bus 06
9 D7 D07 Data bus 07
10 GND DGND Ground of external
11 CP – –
12 7Q – –
13 6Q WIFI_N_RST WiFi module reset
14 5Q DIR_N_CS DIR chip select
15 4Q DSP_N_CS DSP chip select
16 3Q DSP_MT DSP mute
17 2Q FPGA_SPI_N_CS FPGA SPI chip select
18 1Q SDIO_N_RST SDIO interface reset
19 0Q NPGA_N_RST NPGA reset
20 VCC VCC Power 3.3V
IC353: 74LVC574APW (DIGITAL P.C.B.)
Octal D type flip flop with 5 V tolerant inputs/outputs positive edge trigger 3-state
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