P i n
No.
Port Name
Function
Name
(P.C.B.)
Full on
Power off MCU sleep
AC off
Detail of Function
37 P5_7
N_DIR_RST
O
O
O
O
DIR reset
Low Act
Low Fix
Low Fix
Low Fix
38 P5_6
N_DIR_CS
O
O
O
O
DIR chip select
Low Act
Low Fix
Low Fix
Low Fix
39 P5_5
N_E8A_EPM
I-
I-
I-
I-
40 P5_4
DIR_WCK
I
I
O
I
DIR_WCK input for CDDA writing
Low Fix
41 P5_3
DIR_SDO
I
I
O
I
DIR_SDO input for CDDA writing
Low Fix
42 P5_2
N_ADC_PDN
O
O
O
O
ADC power down
Low Act
Low Fix
Low Fix
Low Fix
43 P5_1
N_DAC_CS
O
O
O
O
DAC chip select
Low Act
Low Fix
Low Fix
Low Fix
44 P5_0
N_E8A_CE
I+
I+
I+
I+
45 P4_7
N_DSP_RDY
I+
I+
O
I+
DSP ready input
Low Fix
46 P4_6
(no use)
O
O
O
O
no use
Low Fix
Low Fix
Low Fix
Low Fix
47 P4_5
(no use)
O
O
O
O
no use
Low Fix
Low Fix
Low Fix
Low Fix
48 P4_4
N_TUN_RST
O
O
O
O
Tuner reset output
Low Act
Low Fix
Low Fix
Low Fix
49 P4_3
(no use)
O
O
O
O
no use
Low Fix
Low Fix
Low Fix
Low Fix
50 P4_2
DSP_FMT
O
O
O
O
DSP full mute output
H: Mute
High Act
Low Fix
Low Fix
Low Fix
51 P4_1
N_DSP_CS
O
O
O
O
DSP chip select
Low Act
Low Fix
Low Fix
Low Fix
52 P4_0
N_DSP_RST
O
O
O
O
DSP reset
High Act
Low Fix
Low Fix
Low Fix
53 P3_7
N_E2R_CS
O
O
O
O
EEPROM chip select
Low Act
Low Act
Low Act
Low Act
54 P3_6
N_HP_DET
I+
O
O
O
Headphone detection
L: Headphone available
Low Fix
Low Fix
Low Fix
55 P3_5
R2A_MOSI
O
O
O
O
Electronic vol pattering synchronous data output
Low Fix
Low Fix
Low Fix
56 P3_4
R2A_SCK
O
O
O
O
Electronic vol pattering synchronous clock output
Low Fix
Low Fix
Low Fix
57 P3_3
I_PRT
I-
I-
I-
I-
Overcurrent protection detection
58 P3_2
TRANS_RY
O
O
O
O
Speaker impedance changing relay control /
At 8 ohm: Low (Relay off, B voltage high)
At 6 ohm and temperature rise: High (Relay ON, B
voltage low)
Low Fix
Low Fix
Low Fix
59 P3_1
N_CNPT_PS
O
O
O
O
no use
Low Act
Low Fix
Low Fix
Low Fix
60 VCC2
VCC2
MCU
MCU
MCU
MCU
Microprocessor power supply
61 P3_0
N_VO_MT
O
O
O
O
Composite video selector mute
Low Act
Low Fix
Low Fix
Low Fix
62 VSS
VSS
MCU
MCU
MCU
MCU
Microprocessor GND
63 AN2_7
THM3
AD
I
I
I
Temperature detection 3
AD standby AD standby AD standby
64 P2_6
IPD_APDT
I-
I-
I-
I-
iPod accessory power detection / Low while iPod
booting (about 2 seconds). Execute identification
when booting seems to have completed. Change to
constant input to prevent pulling between high output
of iPod and Low Fix of microprocessor output.
58
HTR-2064/NS-B20/NS-C20/NS-SWP20
HTR-2064/NS-B20/ NS-C20/NS-SWP20
