Yamaha MCR-Nx70 Service Manual page 30

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A-U670/A-670/A-U671/NS-BP401/NS-BP301
Pin
Port Name
No.
34 P01/TO00/RxD1
35 P00/TI00/TxD1
36 P140/PCLBUZ0/INTP6
37 P120/ANI19
38 P41/TI07/TO07
39 P40/TOOL0
40 _RESET
41 P124/XT2/EXCLKS
42 P123/XT1
43 P137/INTP0
44 P122/X2/EXCLK
45 P121/X1
46 REGC
47 VSS
48 VDD
30
Function Name
I/O
(P.C.B.)
RxD
I
For microprocessor debugging / Serial data input of UART1
TxD
O For microprocessor debugging / Serial data output of UART1
VOL_A
I
When rotary EC is used: Volume control UP
When resistor volume is used: Unused
LED_AUX
O AUX input LED
LED_USB
O USB input LED
TOOL0
I/O Microprocessor firm writing terminal
Flash memory programmer / data input/output for debugger
N_RST
I
External reset input
HP_DET
I
HP insertion detected
DAC_STATUS
I
DAC state notified
PURE_SW
I
PURE DIRECT switch
INSP_MODE
I
P.C.B. test mode entry
I
REGC
– Output stable capacity of regulator for internal operation connected
VSS
– Ground potential of all terminals
VDD
– Regular power source for all terminal0
Detail of Function

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