Sony SPP-A2770 - 2.4ghz Cordless Telephone, Руководство по обслуживанию

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45
SPP-A2770
Pin No. Pin Name I/O
Description
48
DIS CHG
(WAKE UP)
O Wakeup control signal output “L” output when discharge
49 WDT I Watch dog timer reset signal input terminal “H”: reset Not used (fixed at “L”)
50 WAKE UP I Wakeup control signal input “H”: wakeup
51
BATT POWER
FAIL
I Battery power fail detection signal input “L”: battery power fail
52 SS IRQ I Interrupt request signal input from the RF unit (RF61) “L” active
53 RESET I
System reset signal input from the reset signal generator (IC123) “L”: reset
For several hundreds msec. after the power supply rises, “L”: is input, then it changes to “H”
54 XT1 I Sub system clock input terminal (32.768 kHz) Not used (fixed at “H”)
55 XT2 O Sub system clock output terminal (32.768 kHz) Not used (open)
56 VSS1 — Ground terminal
57 CF1 I Main system clock input terminal (6 MHz)
58 CF2 O Main system clock output terminal (6 MHz)
59 VDD1 — Power supply terminal (+3.3V)
60 AN0 I Not used (open)
61 CHARGE DET I Charge detection signal input “L”: charge on
62 AN2 I Not used (open)
63 SS SPI DOUT O Serial data output to the RF unit (RF61)
64 SS SPI DIN I Serial data input from the RF unit (RF61)