DOWNLOAD Sharp SD-AT50H (serv.man17) Service Manual ↓ Size: 127.57 KB | Pages: 16 in PDF or view online for FREE

– 48 –

41

RX2

Input

Receiver channel input 2 pin. (Internal bias pin)

42

I

2

C

Input

Serial control mode selection pin. “L” : 4-line serial, “H” : I2C bus

43

RX1

Input

Receiver channel input 1 pin. (Internal bias pin)

44

PDN

Input

Power down & reset pin.

When this pin is set to “L”, it falls into power down state; all the output pins change to “L”
and the register is initialized. If CAD1-0 is switched, reset it using the PDN pin.

Notes :
1. Grouping of the channels can be set with DZFM2-0 bit.
2. This pin turns to an OVF pin if the OVFE bit is set to “1”.
3. Except for the internal bias pins, any of the digital input pins must not be floated.

1

XTO

XTI/EXTCLK

DVDD

DVSS

TVDD

TX

MCKO

LRCK

BICK

SDTO

SDTI1

RIN

LIN

LOUT1

LOUT1

ROUT2

LOUT2

ROUT3

LOUT3

DZF1

VCOM

VREFH

SDTI2

SDTI3

INT0

INT1

CAD1/CDTO

SDA/CDTI

SCL/CCLK

CAD0/CSN

DZF2/OVF

AVSS

AVDD

ODN

RX1

I2C

RX2

TST

RX3

SLAVE

RX4

PVSS

R

PVDD

2

3

4

5

6

7

8

9

10

11

33

32

31

30

29

28

27

26

25

24

23

12 13 14 15 16 17 18 19 20 21 22

44 43 42 41 40 39 38 37 36 35 34

IC102

AK4586VQ

– 49 –

1

P96/ANEX1/SOUT4

LCD_SDA

Output

Display data output to the LCD driver.

2

P95/ANEX0/CLK4

LCD_SCL

Output

Serial clock output to the LCD driver.

3

P94/DA1/TB4IN

LCD_CS

Output

CS control output to the LCD driver.

4

P93/DA0/TB3IN

LCD_RESET

Output

LCD driver RESET control output.

5

P92/TB2IN/SOUT3

AMP_SOUT

Output

Control DATA output to the AMP UNIT microcomputer.

6

P91/TB1IN/SIN3

AMP_SIN3

Input

Control DATA input from the AMP UNIT microcomputer.

7

P90/TB0IN/CLK3

AMP_CLK

Output

Clock output for communication with the AMP UNIT microcomputer.

8

BYTE

BYTE

Input

Connected to VSS since external bus is not used.

9

CNVSS

FLASH_VCC

Input

Used in the single chip mode.
Connected to VSS via pull-down resistor.
VCC for external usage only when writing on FLASH.

10

P87/XCIN

AMP_STB

Output

Enable output for communication with the AMP UNIT microcomputer.

11*

P86/XCOUT

N.C.

Output

Set it as an output terminal and fix it to Low since it is not used.

12

RESET

RESET

Input

Reset input for this microcomputer.
Active “L”.  Connected to writer RESET line when writing on FLASH.

13

XOUT

X_OUT

Output

Reference oscillation output for this microcomputer.
8.38 MHz crystal connection.

14

VSS

GND

—

Connected to GND (VSS).

15

XIN

X_IN

Input

Reference oscillation input for this microcomputer.
8.38 MHz crystal connection.

16

VCC

VCC

Input

Power supply input for this microcomputer.  (3.3 V)
Backup power supply.

17

P85/NMI

FLASH_"H"

Input

Connected to VCC via pull-up resistor.
(Setting for writing on Flash)

18

P84/INT2

SYS_STOP

Input

Power failure detect input/output.
This microcomputer switches to the backup mode.
Normal : “H”, power failure detection when switching from “H” to “L”.

19

P83/INT1

AMP_INT

Input

Communication request input from AMP UNIT.

20

P82/INT0

RX_IN

Input

SHARP system, remote control input.

21*

P81/TA4IN/U

N.C.

Output

Set it as an output terminal and fix it to Low since it is not used.

22*

P80/TA4OUT/U

N.C.

Output

Set it as an output terminal and fix it to Low since it is not used.

23

P77/TA3IN

REG_ON

Output

3-terminal regulator ON/OFF control output for the power supply.
“H” : ON, “L” : OFF

24*

P76/TA3OUT

N.C.

Output

Set it as an output terminal and fix it to Low since it is not used.

25

P75/TA2IN/W

DVD_ON

Input

Input for detecting DVD PLAYER connection cable insertion.
“H” : connected, “L” : not connected

26

P74/TA2OUT/W

KEY_OUT

Output

Key code output terminal for the DVD PLAYER control.

27*

P73/CTS2/RTS2/TA1IN/V

N.C.

Output

Set it as an output terminal and fix it to Low since it is not used.

28

P72/CLK2/TA1OUT/V

OVF

Input

A/D converter overflow detect input of AK4586.
“H” : overflow, “L” : normal

29

P71/RXD2/SCL/TA0IN/TB5IN

SCL

Output

AK4586/CXA2125Q
I

2

C BUS clock output.

30

P70/TXD2/SDA/TA0OUT

SDA

Input/Output

AK4586/CXA2125Q
I

2

C BUS data input/output.

31

P67/TXD1

FLASH_TXD

Output

Functionally not used.  Normally, fixed output to “L”.
(Send data output to the FLASH writer)

32

P66/RXD1

FLASH_RXD

Output

Functionally not used.  Normally, fixed output to “L”.
(Receive data output to the FLASH writer)

33

P65/CLK1

FLASH_SCLK

Output

Functionally not used.  Normally, fixed output to “L”.
(Transfer clock input from the FLASH writer)

34

P64/CTS1/RTS1/CTS0/CLKS1

FLASH_BUSY

Output

Functionally not used.  Normally, fixed output to “L”.
(BUSY output to the FLASH writer.  BUSY : “H”)

35

P63/TXD0

DSP_SCDIN

Output

DSP IC serial data output.

36

P62/RXD0

DSP_SCDOUT

Input

DSP IC serial data input.

37

P61/CLK0

DSP_SCCLK

Output

Output of DSP IC serial send/receive synchronous clock.

In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.

– 50 –

38

P60/CTS0/RTS0

DSP_CS

Input

DSP IC serial send/receive strobe output.

39

P57/RDY/CLKOUT

DSP_RESET

Output

DSP IC RESET output.

40*

P56/ALE

N.C.

Output

Set it as an output terminal and fix it to Low since it is not used.

41

P55/HOLD

FLASH_EPM

Input

Connected to VSS via pull-down resistor.
(Setting for when writing on Flash)  Functionally not used.

42*

P54/HLDA

DSP_UC15

Output

External ROM for DSP download program. Page select output.

43*

P53/BCLK

DSP_US16

Output

External ROM for DSP download program. Page select output.

44*

P52/RD

DSP_UC17

Output

External ROM for DSP download program. Page select output.

45*

P51/WRH/BHE

N.C.

Output

Set it as an output terminal and fix it to Low since it is not used.

46

P50/WRL/WR

FLASH_CE

Input

Connected to VCC via pull-up resistor.
(Setting for writing on Flash)

47

P47/CS3

TIMER_LED

Output

Timer stand-by LED control.
“H” output : LED on, “L” output : LED off

48

P46/CS2

DD_LED

Output

DOLBY DIGITAL IND.
“H” output : LED on, “L” output : LED off

49

P45/CS1

STD_LED

Output

Sound MODE STANDARD IND.
“H” output : LED on, “L” output : LED off

50

P44/CS0

DTS_LED

Output

DTS IND.
“H” output : LED on, “L” output : LED off

51

P43/A19

SURR_LED

Output

Sound MODE STANDARD IND.
“H” output : LED on, “L” output : LED off

52

P42/A18

STEREO_LED

Output

STEREO IND.
“H” output : LED on, “L” output : LED off

53

P41/A17

DPL_LED

Output

DOLBY PRO LOGIC IND.
“H” output : LED on, “L” output : LED off

54

P40/A16

B_LIGHT

Output

LCD backlight circuit control output.
“H” : backlight ON, “L” : backlight OFF

55

P37/A15

VOL_DA

Output

Data latch output for the electron VOL IC control signal.

56

P36/A14

VOL_CL

Output

Output of the clock for the electron VOL IC control signal.

57*

P35/A13

N.C.

Output

Set it as an output terminal and fix it to Low since it is not used.

58*

P34/A12

N.C.

Output

Set it as an output terminal and fix it to Low since it is not used.

59*

P33/A11

N.C.

Output

Set it as an output terminal and fix it to Low since it is not used.

60*

P32/A10

N.C.

Output

Set it as an output terminal and fix it to Low since it is not used.

61

P31/A9

TEST1

Input

Input terminal for test. If it is “L” at RESET, it switches to a mode
where it operates separately without communicating with the
microcomputer.

62

VCC

VCC

Input

Power supply input for this microcomputer.  (3.3 V)
Backup power supply.

63*

P30/A8(/-/D7)

N.C.

Output

Set it as an output terminal and fix it to Low since it is not used.

64

VSS

GND

—

Connected to GND (VSS).

65*

P27/A7(/D7/D6)

ROM

Output

Fixed to L.

66

P26/A6(/D6/D5)

DSP_ABOOT

Output

Fixed to H.

67*

P25/A5(/D5/D4)

N.C.

Output

Set it as an output terminal and fix it to Low since it is not used.

68*

P24/A4(/D4/D3)

N.C.

Input/Output

Set it as an output terminal and fix it to Low since it is not used.

69*

P23/A3(/D3/D2)

L-MUTE

Output

Audio mute output of the VCR OUT.
H : MUTE OFF, L : MUTE ON

70

P22/A2(/D2/D1)

DIG_FUNC+B

Output

Power supply control output for external DIG. input.
External DIG. FUNC : “L” output, Others : “H” output

71

P21/A1(/D1/D0)

BASS-SW

Output

Output for controlling the gain of the SUBWOOFER amp.
“H” output : BASS OFF, “L” output : BASS ON.

72

P20/A0(/D0/-)

S_MUTE

Output

System mute control output.
“L” output : mute ON, “H” output: mute OFF.

73

P17/D15/INT5

NONPCM

Input

Input for detecting whether the AUDIO signal is PCM or not.
“L” : AUDIO PCM, “H” : NON AUDIO PCM.

In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.

– 51 –

In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.

74

P16/D14/INT4

DSP_INTREQ

Input

Input of DSP data receive request signal.
L : DSP -> microcomputer DATA receive request.

75

P15/D13/INT3

H.P_SW

Input

Headphones insert SW detect input.
“H” : H.P insert, SP relay OFF, A/D reset control

76*

P14/D12

N.C.

Output

Set it as an output terminal and fix it to Low since it is not used.

77*

P13/D11

N.C.

Output

Set it as an output terminal and fix it to Low since it is not used.

78*

P12/D10

N.C.

Output

Set it as an output terminal and fix it to Low since it is not used.

79

P11/D9

CONFIG

Output

CONFING setting output.
SUBWOOFER : “H” with YES (CONGING1)
“L” with NO (CONFING2).

80*

P10/D8

N.C.

Output

Set it as an output terminal and fix it to Low since it is not used.

81

P07/D7

AUDITION

Input

Audition MODEL select input.
H : audition MODEL, L : normal MODEL.

82

P06/D6

POWER_KEY

Input

Power supply operation key input.

83

P05/D5

FM_STB

Output

 “L” when FUNCTION is “FM STEREO” or “FM MONO”.
Otherwise “H”.

84*

P04/D4

N.C.

Output

Set it as an output terminal and fix it to Low since it is not used.

85

P03/D3

CCB_DO

Input

Serial data input from the Sanyo CCB device.

86

P02/D2

CCB_CL

Output

Serial clock output to the Sanyo CCB device.

87

P01/D1

CCB_DI

Output

Serial command data output to the Sanyo CCB device.

88

P00/D0

CCB_CE

Output

CE control output to the Sanyo CCB device.

89

P107/AN7/KI3

TUNER_SM

Input

A/D import, input of tuner field intensity comparison detect.

(A/D Input)

90*

P106/AN6/KI2

N.C.

Output

Set it as an output terminal and fix it to Low since it is not used.

(A/D Input)

91

P105/AN5/KI1

PROTECT

Input

A/D import, system abnormality detect input.

(A/D Input)

92

P104/AN4/KI0

AREA

Input

A/D import, destination setting for TUNER BAND.

(A/D Input)

93*

P103/AN3

N.C.

Output

Set it as an output terminal and fix it to Low since it is not used.

(A/D Input)

94

P102/AN2

DVD_POWER

Input

A/D import, input for detecting the DVD player status.

(A/D Input)

95

P101/AN1

KEY1

Input

A/D import, main body key input 1.

(A/D Input)

96

AVSS

GND

—

VSS terminal of the A/D converter.  Connected to GND (VSS).

97

P100/AN0

POWER

Input

Port for detecting power ON when importing the A/D.

(A/D Input)

98

VREF

VREF

Input

Reference voltage input terminal of the A/D converter.
Connected to the VCC terminal.

99

AVCC

AVCC

Input

Power supply input terminal of the A/D converter.
Connected to the VCC terminal.

100

P97/ADTRG/SIN4

GND

Input

Port processing. Fixed to “L”.  (Not used)