Sony XES-Z50, Руководство по обслуживанию

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Pin No. Pin Name I/O Function
79 DIR-ERR I
PLL unlock error detection signal input from the digital audio interface receiver (IC502)
“H”: error
80 EMP-IN I
Emphasis detection signal input from the digital signal processor (IC501 CXD2540Q) and
digital audio interface receiver (IC502) “H”: emphasis on
81 VOLMAX I Input terminal for the test mode Not used (fixed at “L”)
82 DSP-BUSY I
Input of busy signal at serial data transfer from the digital signal processor (IC601 CXD2710R)
83 DSP-PLL I
Not used (fixed at “L”)
84 BU-IN I
Backup power supply detection signal input terminal (used also to reset standby)
85 DSP-SI I Serial data input from the digital signal processor (IC601 CXD2710R)
86 AVSS —
Ground terminal (for A/D conversion)
87 BUS-ON I
Bus on/off control signal input from the bus interface (IC306) (for SONY bus) “L”: bus on
With the bus in off status, standby is cancelled by bus on falling edge
88 2711-CE O Chip enable signal output to the digital signal processor (IC101, 201 CXD2711Q)
89 FROM-CE2 O Chip enable signal output to the flash memory (IC401, 402)
90 FROM-CE1 O Chip enable signal output to the flash memory (IC401, 402)
91 BOOT I
Input of forced boot mode detection At the reset, if “H” is entered, the boot mode is forcibly
activated
92 VSS —
Ground terminal
93 LINKOFF1 O
Bus on/off control signal output to the bus interface (IC951) (for SONY bus) “L”: bus on
94 TEND O
Not used (open)
95 LINKOFF2 O
Bus on/off control signal output for the AUX bus control “L”: bus on
96 LINKOFF3 O
Bus on/off control signal output terminal “L”: bus on Not used (open)
97 VOLCE0 O
Chip enable signal output to the electrical volume (IC1106) (for front speaker)
98 VOLCE1 O
Chip enable signal output to the electrical volume (IC1206) (for rear speaker)
99 VOLCE2 O
Chip enable signal output to the electrical volume (IC1306) (for sub-woofer speaker)
100 A20 O
Address signal output to the flash memory (IC401, 402), and control/data output to the digital
signal processor (IC101, 201 CXD2711Q)