Sony 757MX - Xplod CDX CD - Page 40

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CDX-757MX
Pin No. Pin Name I/O Description
54 AVCC — Power supply terminal (+3.3V) (for A/D converter)
55, 56 MD0, MD1 I Setting terminal for the CPU operational mode “H”: single chip mode (fixed at “H” in this set)
57 OSC2 O Sub system clock output terminal Not used
58 OSC1 I Sub system clock input terminal Not used (fixed at “L”)
59 RES I
System reset signal input from the SONY bus interface and reset signal generator “L”: reset
For several hundreds msec. after the power supply rises, “L” is input, then it changes to “H”
60 NMI O Not used (fixed at “H”)
61 STBY O Standby mode control signal output terminal Not used (fixed at “H”)
62 VCC — Power supply terminal (+3.3V)
63 XTAL I Main system clock input terminal (12.288 MHz)
64 VSS — Ground terminal
65 EXTAL O Main system clock output terminal (12.288 MHz)
66 FEW I Flash memory data write enable signal input terminal
67 MD2 I Setting terminal for the CPU operational mode “H”: single chip mode (fixed at “H” in this set)
68 FL BOOT I Flash memory data write control signal input terminal “L” active
69 FL W O Flash memory data write control signal output (connecting FEW (pin 66))
70, 71 NC O Not used
72 MGLK-SW I Magazine in/out detect switch input terminal “L”: magazine in
73 DECINT I Interrupt signal input from the CD-ROM/MP3 decoder
74 NC O Not used
75 EJECT I Eject switch input terminal “L” active
76 SO O Serial data output to the SONY bus interface
77 SI I Serial data input from the SONY bus interface
78 SCLK I Serial data transfer clock signal input from the SONY bus interface
79 EEDATA I/O Two-way data bus with the EEPROM
80 SDA I/O I2C interface data input/output with the CD-ROM/MP3 decoder
81 SCL O I2C interface data transfer clock signal output to the CD-ROM/MP3 decoder
82 EECLK O Serial data transfer clock signal output to the EEPROM
83 NC O Not used
84 SQSO I Subcode Q data input from the DSP
85 SQCK O Subcode Q data reading clock signal output to the DSP
86 to 89 NC O Not used
90 R/RW SEL O CD-ROM/RW selection signal output “L”: CD-RW, “H”: CD-ROM
91 BUSON I Bus on/off control signal input from the SONY bus interface “L”: bus on
92 BUCHK I
Battery detection signal input “H”: low battery (Normally: “L”)
93, 94 NC O Not used
95 LOADF O Motor drive signal (load chucking direction) output to the chucking motor drive
96 LOADR O Motor drive signal (save direction) output to the chucking motor drive
97 SINGLE I
Setting terminal for the single disc/multiple discs mode
“L”: single disc mode, “H”: multiple discs mode (fixed at “H” in this set)
98 LOAD SW I
Chucking end detect switch input terminal
“L”: When completion of the disc chucking operation
99 SAVE SW I
Save end detect switch input terminal
“L”: When completion of the disc save operation
100 LIM SW I
Sled limit in detect switch input terminal
“L”: When the optical pick-up is inner position