Sony HCD-C990 Service Manual - Page 89

Pin No., Pin Name, Description

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Page 89 highlights

HCD-C770/C990 Pin No. 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 Pin Name MUTE DSD SQCK VSS TRAY IN TRAY OUT GFS DVD MUTE CD MUTE 2D SLED FG SP ON JIT TE PI FE AVSS AVREF AVDD GFS CD SCLK CD TSD FOK CD LOCK CD LDSEL SACD/DVD I2C SIO 79 IIC-CLK 80 81 82 83 84 85 86 87 88 89 to 96 97 98 99 100 RXD TXD SDCLK RF SDATA RF XWR XRD (PWE) VDD VSS A0 to A7 DSAVE XDRST EEP WP EEP CLK I/O Description O Muting on/off control signal output to the DSD decoder "H": muting on O Subcode Q data reading clock signal output to the digital signal processor - Ground terminal (digital system) I Disc tray in detection signal input terminal Not used I Disc tray out detection signal input terminal Not used I Guard frame sync signal input from the DVD decoder O Muting on/off control signal output to the digital signal processor "H": muting on O Muting on/off control signal output to the motor/coil driver "H": muting on I Sled motor servo drive PWM signal input terminal I Spindle motor control signal input O Muting on/off control signal output to the motor/coil driver "H": muting on I Jitter signal input I Tracking error signal input from the DVD/CD RF amplifier I Pull in signal input from the DVD/CD RF amplifier I Focus error signal input from the DVD/CD RF amplifier - Ground terminal (for A/D converter) I Reference voltage input terminal (for A/D converter) - Power supply terminal (+3.3V) (for A/D converter) I Guard frame sync signal input from the digital signal processor O SENSE serial data reading clock signal output to the digital signal processor O Thermal shut down signal output to the motor/coil driver I Focus OK signal input from the digital signal processor I GFS is sampled by 460 Hz "H" input when GFS is "H" O Laser diode selection signal output O SACD/DVD selection signal output "L": DVD, "H": SACD I/O Communication data bus with the DVD system processor and system controller I/O Communication data reading clock signal input or transfer clock signal output with the DVD system processor and system controller I Serial data input from the RS-232C (for check) O Serial data output to the RS-232C (for check) O Serial data transfer clock signal output to the DVD/CD RF amplifier I/O Two-way data bus with the DVD/CD RF amplifier O Write strobe signal output to the DVD decoder O Read strobe signal output to the DVD decoder - Not used - Power supply terminal (+3.3V) (digital system) - Ground terminal (digital system) O Address signal output to the DVD decoder O Motor/coil driver power save control signal output terminal Not used O Reset signal output to the digital signal processor and DSD decoder "L": reset O Write protect signal output to the EEPROM O Clock signal output to the EEPROM 89

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89
HCD-C770/C990
Pin No.
Pin Name
I/O
Description
53
MUTE DSD
O
Muting on/off control signal output to the DSD decoder
“H”: muting on
54
SQCK
O
Subcode Q data reading clock signal output to the digital signal processor
55
VSS
—
Ground terminal (digital system)
56
TRAY IN
I
Disc tray in detection signal input terminal
Not used
57
TRAY OUT
I
Disc tray out detection signal input terminal
Not used
58
GFS DVD
I
Guard frame sync signal input from the DVD decoder
59
MUTE CD
O
Muting on/off control signal output to the digital signal processor
“H”: muting on
60
MUTE 2D
O
Muting on/off control signal output to the motor/coil driver
“H”: muting on
61
SLED
I
Sled motor servo drive PWM signal input terminal
62
FG
I
Spindle motor control signal input
63
SP ON
O
Muting on/off control signal output to the motor/coil driver
“H”: muting on
64
JIT
I
Jitter signal input
65
TE
I
Tracking error signal input from the DVD/CD RF amplifier
66
PI
I
Pull in signal input from the DVD/CD RF amplifier
67
FE
I
Focus error signal input from the DVD/CD RF amplifier
68
AVSS
—
Ground terminal (for A/D converter)
69
AVREF
I
Reference voltage input terminal (for A/D converter)
70
AVDD
—
Power supply terminal (+3.3V) (for A/D converter)
71
GFS CD
I
Guard frame sync signal input from the digital signal processor
72
SCLK CD
O
SENSE serial data reading clock signal output to the digital signal processor
73
TSD
O
Thermal shut down signal output to the motor/coil driver
74
FOK CD
I
Focus OK signal input from the digital signal processor
75
LOCK CD
I
GFS is sampled by 460 Hz
“H” input when GFS is “H”
76
LDSEL
O
Laser diode selection signal output
77
SACD/DVD
O
SACD/DVD selection signal output
“L”: DVD, “H”: SACD
78
I2C SIO
I/O
Communication data bus with the DVD system processor and system controller
79
IIC-CLK
I/O
Communication data reading clock signal input or transfer clock signal output with the DVD
system processor and system controller
80
RXD
I
Serial data input from the RS-232C (for check)
81
TXD
O
Serial data output to the RS-232C (for check)
82
SDCLK RF
O
Serial data transfer clock signal output to the DVD/CD RF amplifier
83
SDATA RF
I/O
Two-way data bus with the DVD/CD RF amplifier
84
XWR
O
Write strobe signal output to the DVD decoder
85
XRD
O
Read strobe signal output to the DVD decoder
86
(PWE)
—
Not used
87
VDD
—
Power supply terminal (+3.3V)
(digital system)
88
VSS
—
Ground terminal (digital system)
89 to 96
A0 to A7
O
Address signal output to the DVD decoder
97
DSAVE
O
Motor/coil driver power save control signal output terminal
Not used
98
XDRST
O
Reset signal output to the digital signal processor and DSD decoder
“L”: reset
99
EEP WP
O
Write protect signal output to the EEPROM
100
EEP CLK
O
Clock signal output to the EEPROM