Pin Description - Kenwood TK-380 Service Manual

PLL System : SA7025DK (TX-RX Unit IC14)
■ Block diagram

■ Pin description

Pin No. Symbol
1 CLOCK Serial clock input.
2 DATA Serial data input.
3 STROBE Serial strobe input.
4 Vss Digital ground.
5 RF Prescaler positive input.
IN
6 RF Prescaler negative input.
IN
7 Vcc Prescaler positive Supply voltage. This pin supplies
P
power to the prescaler and RF input buffer.
8 REF Reference divider input.
IN
9 RA Auxiliary current setting; resistor to V
10 AUX AuxIliary divider input.
IN
11 PHA Auxiliary phase detector output.
12 V analog ground.
SSA
13 PHI Integral phase detector output.
14 PHP Proportional phase detector output.
15 V Analog supply voltage. This pin supplies power
DDA
to the charge pumps, Auxiliary prescaler.
Auxiliary and Reference buffers.
16 RN Main current setting; resistor to V
17 RF Fractional compensation current setting;
resistor to V
18 LOCK Lock detector output.
19 TEST Test pin; connect to V
20 V Digital supply voltage. This pin supplies power
DD
to the CMOS digital part of the device.
SEMICONDUCTOR DATA
Description
.
SSA
.
SSA
.
SSA
.
DD
Audio Power Amplifier : TDA7053AT
■ Block diagram
■ Pin description
Pin No. Symbol
1 NC Not connected.
2 VC1 DC volume control 1.
3 NC Not connected.
4 V Voltage input 1.
I(1)
5 VP Positive Supply voltage.
6 V Voltage input 2.
I(2)
7 SGND Signal ground.
8 VC2 DC volume control 2.
9 OUT2+ Positive output 2.
10 PGND2 Power ground 2.
11 NC Not conncted.
12 OUT2- Negative output 2.
13 OUT1- Negative output 1.
14 PGND1 Power ground 1.
15 NC Not connected.
16 OUT1+ Positive output 1.
TK-380
(Display Unit IC300)
Description
25