JVC RX-508VBK User Manual

RX-508VBK RX-508VBK
RX-SOSVIN RX-509VTN
@ 1C7218 (i102) : PLL Synthesizer HE LA1266A (!C104): FM AM IF AMP & detector
1. The main function descriptions
. egies feat f by th ol data 4 1c401 (1) Amplify and detect of FM intermodulation frequencies.
1) It makes the local oscillation frequency by the control data from : ; A : ee
(2) Decode the control signal and transmit the signal for receiving conditions. (2) It has local oscillator and mixer for AM, and amplify the AM-IF signal.
(3) For the best tuning, count the internal-frequency and transmit the data to 1C401.
2. Top View 3. Biock Diagram
1 r AM AM AM FM FM
2. Terminal Layout 3. Block Diagram Mix iF of «STRQ e an» Bypsss euET Vee
we FM-in AM-OSC out bal fa} fe sees
BYPASS AM-OSC 1
Reference Phase Detector BYPASS V.ret '
XIN X Out xin 1 Driver Charge Pump 21 por GNO enue FM out
ce
Vsg
0
XOuT
24h
:
Foz
eas
ee
!
[a]em
arc
CE AEE a 4 s '
2 ee - ae Yee AMAF i ['S]am out
x Pot een Ao te Swallow Counter SIG AM Adj. 1
ee
sis
1/16,
1/17
Abits
:
FM-AFC
FM
Adj.
:
; : FM-IF AM out i
sre rhein AMAF NAR SM i
TUNED AM- tor FM-OUT sTRQ ' {8 ]tuned IND.
STOP
IN
in
amin
16
i
Band
width
1
No
a
nal ooo
SOWER te
aM AM-OSC AM-OSCT NAR AGC AM FM GND
asc REQ an in out SM Adj. Adj.
—— cE 2 VoD
MONO FMIF oO 3 ies
7M rod os ‘ 4. Pin Function Description
ni fk Wrane aeSRE Tt nie Pin No. Symbol Functions and Operations
oun 1) 20039 4) «65 «6 INO Ot } 1 [| FMin | 1 |input terminal for FM signal.
BYPASS | ~ | Bypass of FM IF Amp.
. - ee Device ground terminal.
4. Pin Functi ription [4 | GND | = [Device ground terminal,
Pin Function Descrptic - | 5.6 | FMDET | — |FM detect transformer,
Pin No.| symbol |vo! Functions and Operations | 7 | Vee | — [Power supply terminal.
|_1.24 {Xin X out | VO | Crystal oscillator (7.2MHz). —— ; ; | 8 | SiG | O [Whethesetistunning ,this terminal become “L”.
[ 2 | CE {| t |Fix the chip enable to “H” when inputting (Di) and outputting (DO) the serial data. :
3
[DI]
1
[Receive
the
contro!
data
from
the
controller
(IC401)
|
9
|
FMAFC
|
O
[Output
terminal
of
voltage
for
FM-AFC.
Ya] 1 | this clock is used to synchronize data when transmitting the data of Di and DO. FMiF _| © [When the signal of IF REQ of 1C102(LC7218) applied to pin17, the signal of FM IF does output.
[5 | DO | © | Transmit the data from LC7216 to the controller which is synchronized with CL. | 11 | AMIF | © [When the signal of IF REQ of IC102(LC7218) applied to pin17, the signal of AM IF does output.
po 6 ft svc — [Not used | 12 [ Fmout | 0 [FM detection output.
TUNED a Receive the tuned signal from 1C104 (LA1266A). | 13 | STRQ Lt] The IF-signals come out from pin10 (FM-IF) or pin11 (AM-IF) while this terminal going to High”.
lon connecti
re oe = | 15 [| AMout | 0 [AM detection output.
[ 10 f QsC__|} — JON mode with “H“ and OFF mode with “L*. (Non connection) :
[11 | MONO | 0 [ft is “H” on FM-monaural, “Lon FM-Stereo. ° | 16 | FMAdj. | — [FM stop level (or mute level) adjust.
[i2. [FM [0 [ft is “L” on FM mode. AM Adj. | — | AM stop level (or mute level) adjust.
[73
[wo
Tris
“17
on
MW
mode:
[18
|
Amar
|
1
[AM
iF
Signal
input.
p14
fiw
fo
tit
is
“tT
on
LW
mode.
|
19
[|
AM-AGC
|
1
[AGC
voltage
input
terminal
for
AM.
[15 | AM-iF | { | Universal counter input for AM-IF from IC104 (LA1266A). ah MI Sache caininal GCANLL
[16 | FM-if [1 [Universal counter input for FM-IF from 1C104(LA1266A). |_20_| AM-Mix | © [Output terminal for AM mixer,
[17 | if REQ | O [Outputthe “IF-signal request” to C104 when the pin-7 (tuned in) go to “H*. | 21 | amin” | 1 [input terminal for AM RF Signal.
[ 18 | AMin_| t [Input the local oscillator signal of AM. V.REF | — | 8and-width control of FM signal meter.
[19
|
FMin
|
|
Jinput
the
local
oscillator
signal
of
FM.
|
23
|
AM-OSC
|
—
[AM
Local
oscillation
circuit.
BEES BT power supply termine! ; 7 aes AN-OSC AM Local Oscillation Signa! output
PLL charge pump output: When the local oscillator signal frequency is higher than g Put;
21 the reference frequency high level signals will output.
When it is lower than the reference frequency, low level signals will output. When
it is same as reference frequency signals, it wil! be floating.
P22) pp? = [Nonconnection
[| 23 | Vss {| — [Power supply.
1-32 (No.20376) (No.20376) 1-33

JVC RX-508VBK Specifications

General

Brand	JVC
Model	RX-508VBK
Category	Stereo Receiver
Language	English