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Pin
Port Name
No.
1 P60/SCLA0
2 P61/SDAA0
3 P62
4 P63
5 P31/TI03/TO03/INTP4
6 P75/KR5/INTP9/_SCK01/SCL01
7 P74/KR4/INTP8/SI01/SDA01
8 P73/KR3/SO01
9 P72/KR2/SO21
10 P71/KR1/SI21/SDA21
11 P70/KR0/_SCK21/SCL21
12 P30/INTP3/RTC1HZ/_SCK11/
SCL11
13 P50/INTP1/SI11/SDA11
14 P51/INTP2/SO11
15 P17/TI02/TO02/TXD0
16 P16/TI01/TO01/INTP5/RXD0
17 P15/PCLBUZ1/_SCK20/SCL20
18 P14/RxD2/SI20/SDA20
19 P13/TxD2/SO20/TI04/TO04
20 P12/SO00/TxD0/TOOLTxD/
TI05/TO05
21 P11/SI00/RxD0/TOOLRxD/
SDA00/TI06/TO06
22 P10/_SCK00/SCL00
23 P146
24 P147/ANI18
25 P27/ANI7
26 P26/ANI6
27 P25/ANI5
28 P24/ANI4
29 P23/ANI3
30 P22/ANI2
31 P21/ANI1/AVREFM
32 P20/ANI0/AVREFP
33 P130
Function Name
I/O
(P.C.B.)
EP/DAC_CLK
I/O EEPROM/DAC I2C I/F / Clock input/output of IICA0
EP/DAC_DATA
I/O EEPROM/DAC I2C I/F / Serial data input/output of IICA0
TC_DATA
O Tone control/volume IC serial I/F / Serial data output of CSI21
TC_CLK
O Tone control/volume IC serial I/F / Clock output of CSI21
INPUT_SW
I
SYSTEM cable detection (A-U670/A-670) / INPUT select SW (A-U671)
External interrupt input (A-U670/A-670) / Ordinary port (A-U671)
SYS_I/F
O XMOS REQUEST signal
SW_MUTE
O SW mute / MUTE (High) when HP is inserted and cancelled (Low) when not inserted
VBUS_ON
O VBUS input SW
XMS_N_RST
O XMOS reset
TC_CE
O Tone control / volume IC CE
HP_MUTE
O HP mute control / Cancelled (Low) when HP is inserted and MUTE (High) when not inserted
SYS_INT
I
System control interrupt (A-U670/A-670) / For remote control reception (A-U671)
External interrupt input
AMP_PRT
I
Amplifier protection / External interrupt input
PWR_DET
I
Power source (AC) detection / External interrupt input
AUDIO_ON
O Audio circuit power ON
PWR_ON
I
POWER ON key / External interrupt input
DAC_N_RST
O DAC reset
I
SYS control I/F / Serial data input of UART2
O SYSTEM control I/F / Serial data output of UART2
O XMOS UART I/F / Serial data output of UART0
I
XMOS UART I/F / Serial data input of UART0
AMP_MUTE
O Pre-amplifier mute / MUTE (High) when HP is inserted and cancelled (Low) when not inserted
AMP_SD
O Amplifier shut-down
LED_PWR
O POWER LED control
VOL_B/AD
I
When rotary EC is used: Volume control down (Rotary: Analog input of A/D converter)
When resistor volume is used: A/D (Resistor: Usual input) for volume control
MODEL
I
Model discrimination
PS2
I
Power source protection monitor / Analog input of A/D converter
PS1
I
Power source protection monitor / Analog input of A/D converter
BS_AD
I
A/D for BASS control / Analog input of A/D converter
TRB_AD
I
A/D for TREBLE control / Analog input of A/D converter
BLN_AD
I
A/D for BALANCE control / Analog input of A/D converter
SPDC_DET
I
Speaker output DC protection monitor
LED_PURE
O PURE DIRECT ON LED
A-U670/A-670/A-U671/NS-BP401/NS-BP301
Detail of Function
29
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