Aiwa TN-C215, Руководство по обслуживанию

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XOUT
XIN
TEST
HOOK CONT
SPK MUTE
SIG OUT
CHAG DET
CLK EEPROM
DTMF4
DTMF3-DTMF1
DTMF0
COUNTRY S2
RING OFF
COUNTRY S1
PAGE KEY
GND
PLL STB
PLL DATA
U LED
PLL CK
DO EEPROM DI EEPROM
TL RELAY
TL MUTE
M B SEL
HOOK DET
TX PWR
SCRET OPT
TX DATA
BUZZER
T P SEL
RX DATA
RING DET
BAND
SQ SELECTION
____________
RESET
POWER
Oscillator out
Oscillator in
Tied low
Hook control output (for corded phone): 0 = OFF HOOK, 1 = ON HOOK
For ZPC-6: this pin is used as Speaker Amp, IC Mute Control)
(the Mic Mute control is controlled by hardware: unmute mic when Speaker is unmute
and charge not detected)
Received Signal Strength Indicator: (TB31224F SIG OUT pin)
0 = carrier present, 1 = carrier absent NOISE DETECT
0 = Rx unlock, 1 = Rx lock Rx LOCK DETECT
0 = Tx unlock, 1 = Tx lock Tx LOCK DETECT
Charge detect: 0 = charging, 1 = not charging.
Clock of EEPROM
DTMF data pin 4 (Most Significant Bit)
DTMF data pin 3-1
DTMF data pin 0 (Least Significant Bit)
Country option select 2.
Control the shunt resistor: 1 = shunt a resistor (For U, K ONLY)
Country option select 1
PAGE key: 1 = PAGE ON, 0 = STANDBY
Ground
Combo chip strobe signal (TB31224F)
Combo chip data signal (TB31224F).
In-use LED: 1 = ON, 0 = OFF.
Combo chip clk signal (TB31224F).
Data Input/Output of EEPROM.
Line seize: 1 = line seize, 0 = off-hook
Telephone Line Mute Control: 1 = MUTE.
Make/Break Ratio Select 1 = 33.3%, 0 = 40%
Hook detect input (for Corded Phone). 1 = ON HOOK, 0 = OFF HOOK
REMARK: this pin is always PULL-HIGH for ZPC-7 or ZPC-6 (I. e. just imagine
Corded phone is Always ON HOOK)
Tx power control: 0 = ON, 1 = OFF. Secret function option: 1 = YES, 0 = NO
REMARK: this PULL LOW for ZPC-7 or ZPC-6 (I. e. Secret opt is DISABLED)
Transmit data output
Buzzer signal (key tone and paging sound ONLY)
Tone/Pulse selection: 1 = Pulse, 0 = Tone
Received data input
Ring detect input: 1 = OFF, 0 = RING COME (MC34012)
Shunt capacitor for U.S. Frequency Higher Band: 1 = shunt Cap, OUT OF RANGE
FUNCTION: 1 = YES, 0 = NO
Normally High, Low to reset MCU
Power (VCC)
O
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O
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I
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O
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O
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I
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O
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I
I/O
I
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IC, TMP87C408N
Pin No. Pin Name I/O Description
IC DESCRIPTION