Sharp Illustration XL-HP535H Service Manual page 63

IC3 VHiLC78683E-1: MP3 Decoder (LC78683E) (2/2)
Pin No. Terminal Name
51 DVDD4
52 VSS
53 MADRS7
54 MADRS6
55 MADRS5
56 MADRS4
57 MADRS3
58 MADRS2
59 MADRS1
60 MADRS0
61 DVDD5
62 VSS
63* STREQ
64* STCK
65* STDAT
66 FSYNC
67* CRCF
68 DVDD6
69 VSS
70* WOK
71* CNTOK
72* OVF
73 CMDOUT
74 CMDIN
75 CL
76 CE
77 INTB
78 RESB
79 DATAIN
80 DATACK
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
NOTE: 1) Notes on unused pins
Unused input pins must be connected to the ground level (0V).
Unused output pins must be left open. Do not connect anything to these pins.
Unused I/O pins may either be connected to the ground level (0V) or set to output mode and left open.
2) The corresponding power supply levels must be provided to all of the DVDD1, DVDD3, DVDD4, DVDD6, and AVDD pins. The correspond-
ing power supply level must also be provided to DVDD2 and DVDD5. (See the Allowable Operating Ranges specifications for the supply
levels.)
3) The TEST1 and TEST2 input pins must be connected to ground (0V).
4) The I/O pins (MDA0:15, STREQ, STCK, and STDAT) go to input mode after a reset.
5) After fist applying the power supply levels, the RESB pin must be held low for at least 1 µs.
6) A 16.9344 MHz clock signal must be supplied to the CKIN pin by the CD DSP.
The LC786484E does not support the implementation of an oscillator circuit using an oscillator element.
Input/Output Block
— Power supply
—
Output Memory interface
Output
Output
Output
Output
Output
Output
Output
— Power supply
—
Input/Output MP3 stream I/O
Input/Output
Input/Output
Output MP3-dec
Output CD monitor
— Power supply
—
Input CD-DA shock-
proof and MP3 I/O
Output
Output
Output Microcontroller
interface
Input
Input
Input
Output
Input
Input CD IF
Input
Digital I/O system power supply.
GND
DRAM address output 7.
DRAM address output 6.
DRAM address output 5.
DRAM address output 4.
DRAM address output 3.
DRAM address output 2.
DRAM address output 1.
DRAM address output 0.
Internal logic system power supply.
GND
MP3 data request flag output.(active high)/DRAM data request flag input.
(CD-ROM mode, active high)
MP3 data transfer clock input/DRAM data transfer clock output.
MP3 serial data input/DRAM serial data output.
MP3 data frame sync signal (active high)/Data continuity point detection
complete flag.(CD-DA mode, active high)
CRC check result output (CD-ROM data/CD-DA subcode data)/DRAM data
output enable signal output.(active high)
Digital I/O system power supply.
GND
DRAM write enable input (CD-DA mode, active high)/DRAM data request
flag input.
Data continuity point detection complete flag (CD-DA mode, active high)/
SYNC error monitor flag (MP3 mode, active high)/DRAM serial data output.
DRAM write interrupt flag (CD-DA mode, active high)/Emphasis output flag
(CD-DA and MP3 modes, active high)/DRAM data transfer clock output.
Serial command data output.(n-channel open-drain output)
Serial command data input.
Serial command clock input.
Command enable input (active high)
Interrupt signal output (active low)/DRAM write interrupt flag. (CD-DA mode,
active high)
System reset. (active low)
Serial CD data input.
CD bit clock input.
8 – 7
XL-HP535H/HP535E
Function