NAD M56, Service Manual

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PIN NO PIN NAME TYPE DESCRIPTION
31 AVDD12_3 Analog Power(1.2V) Power Pin
32 AVDD12_4 Analog Power(1.2V) Power Pin
43 AVDD33_4 Analog Power(3.3V) Power Pin
116 AVDD12_1 Analog Power(1.2V) Power Pin
127 AVDD33_1 Analog Power(3.3V) Power Pin
Low-Speed General Output (10)
33 LGO1P Analog Output Lowspeed General Output 1P
34 LGO1N Analog Output Lowspeed General Output 1N
35 LGO2P Analog Output Lowspeed General Output 2P
36 LGO2N Analog Output Lowspeed General Output 2N
37 LGO3P Analog Output Lowspeed General Output 3P
38 LGO3N Analog Output Lowspeed General Output 3N
39 LGO4P Analog Output Lowspeed General Output 4P
40 LGO4N Analog Output Lowspeed General Output 4N
41 LGO5P Analog Output
Lowspeed General Output 5P
Alternative Function : Read gain switch 4
42 LGO5N Analog Output
Lowspeed General Output 5N
Alternative Function : Read gain switch 5
MOTOR (10)
50 FMO3 Analog I/O
Feed motor 3 control. PWM output.
Alternative Function : Auxiliary servo input
51 FMO4 Analog I/O
Feed motor 4 control. PWM output.
Alternative Function : Auxiliary servo input
52 TLO Analog Output Tilt servo output
53 TRO Analog Output Tracking servo output. PDM output of tracking servo compensator.
54 FOO Analog Output Focus servo output. PDM output of focus servo compensator.
55 TRAYPWM Analog Output Tray PWM control output. Controlled by P.
56 FMO Analog Output Feed motor control. PWM output.
57 FMO2 Analog Output Feed motor 2 control. PWM output.
58 DMO Analog Output Disk motor control output. PWM output.
3.3V LVTTL I/O,
96 FG 5V-tolerance,1 Motor Hall sensor input. The pin is spike-free at power-on stage.
2mA PDR,
75K pull-up.
SATA Interface (10)
77 SVDD33 Analog Power(3.3V) Power supply for SATA 3.3V circuitry
78 SPLLVDD12 Analog Power(1.2V) Power supply for SATA circuitry
79 SAGND Analog Ground Ground Pin for SATA circuitry
80 STXVDD12 Analog Power(1.2V) Power supply for SATA transmit circuitry
81 STXP Analog Output Differential serial output transmit signal of SATA
82 STXN Analog Output Differential serial output transmit signal of SATA
83 SAGND Analog Ground Ground Pin for SATA circuitry
84 SRXN Analog Input Differential input receive signal of SATA
85 SRXP Analog Input Differential input receive signal of SATA
86 AVDD12_RX Analog Power(1.2V) Power supply for SATA circuitry
Crystal Interface (3)
74 XTAL25MI Input X`tal input. The working frequency is 25MHz.
75 XTAL25MO Output X`tal output.
76 SXVDD33 Analog Power(3.3V) Power supply for X`ftal circuitry
Serial Flash (6)
97 SFHOLD# Hold in normal serial flash mode but in quad I/O, as serial data input/data output
98 SFCLK serial flashÅfs clock output
99 SFDO serial data outputrial
100 SFCS# chip select output
101 SFDI serial data input
102 SFWP#
Write protection in normal serial flash mode but in quad I/O,
as serial data input/data output
3.3V LVTTL I/O,
5V-tolerance,
4,8,12,16mA PDR,
75K pull-up