Kenwood TK-385, Руководство по обслуживанию

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TK-385
12
PLL System : SA7025DK (TX-RX Unit : IC14)
■
Block diagram
1 CLOCK Serial clock input.
2 DATA Serial data input.
3 STROBE Serial strobe input.
4 Vss Digital ground.
5 RF
IN
Prescaler positive input.
6
RF
IN
Prescaler negative input.
7 Vcc
P
Prescaler positive Supply voltage. This pin supplies
power to the prescaler and RF input buffer.
8 REF
IN
Reference divider input.
9 RA Auxiliary current setting; resistor to V
SSA
.
10 AUX
IN
AuxIliary divider input.
11 PHA Auxiliary phase detector output.
12 V
SSA
analog ground.
13 PHI Integral phase detector output.
14 PHP Proportional phase detector output.
15 V
DDA
Analog supply voltage. This pin supplies power
to the charge pumps, Auxiliary prescaler.
Auxiliary and Reference buffers.
16 RN Main current setting; resistor to V
SSA
.
17 RF Fractional compensation current setting;
resistor to V
SSA
.
18 LOCK Lock detector output.
19 TEST Test pin; connect to V
DD
.
20 V
DD
Digital supply voltage. This pin supplies power
to the CMOS digital part of the device.
Pin No. Symbol Description
■
Pin description
SEMICONDUCTOR DATA
Pin Port
I/O Function
No. Name
50~59 A9~A18 - Flash memory address bus.
60 VCC - +5V
61 A8 - Flash memory address bus.
62 VSS - GND.
63~70 A0~A7 - Flash memory address bus.
71 MONI I Monitor switch input.
72 EN4 I Encoder pulse input 4.
73 EN3 I Encoder pulse input 3.
74 EN1 I Encoder pulse input 1.
75 MINDAT O Common data output.
76 KEY2 I Key scan input 2.
77 KEY1 I Key scan input 1.
78 RESET O Key scan IC reset output..
79~86 D0~D7 - Flash memory data bus.
87 DTMDAT I DTMF decode IC data input.
88 PF I PF switch input.
89 VOL I Volume level input.
90 BATT I Battery voltage input.
91 ANLSQL I Squelch level input.
92 TEMP I Thermistor input.
93 RSSI I Received signal strength indicator input
(RSSI).
94 AVSS - GND.
95 LSDIN I Low speed data input.
96 VREF - +5V
97 AVCC - +5V
98 SFTSTB1 O Shift register data strobe output.
99 W/N O Wide/Narrow switching output.
100 AFSTB O AF IC data strobe output.