Read Sharp XL-3000 (serv.man4) Service Manual online
XL-3000H
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3
4
2
7
1
5
6
11
10
14
15
12
13
16
9
8
Vdda
Vssa
MPXIN
TEST
TEST
CLK(4.332MHz)
OSC
XIN
XOUT
RDS-ID/
READY
RST
MODE
RDCL
RDDA
Vssd
Vddd
PLL
(57kHz)
CLOCK
RECOVERY
(1187.5Hz)
DATA
DECODER
RAM
(128-bits)
RDS-ID
DETECT
REFERENCE
VOLTAGE
ANTIALISING
FILTER
57kHz
BPF
(SCF)
SMOOTHING
FILTER
VREF
VREF
FLOUT
CIN
IC521 VHiLC72723M-1: RDS Circuit (LC72723M)
1
VREF
Reference voltage output (Vdda/2).
2
MPXIN
Baseband (multiplexed) signal input.
3
Vdda
Analog power supply (+5V).
4
Vssa
Analog ground.
5
FLOUT
Subcarrier output (filter output).
6
CIN
Subcarrier input (comparator input).
7
TEST
Test input.
8
XOUT
Crystal oscillator output (4.332MHz).
9
XIN
Crystal oscillator input (external reference signal input).
10
Vssd
Digital ground.
11*
Vddd
Digital power supply (+5V).
12
MODE
Read mode setting (0 : master, 1: slave).
13
RST
RDS-ID/RAM reset (positive polarity).
14
RDDA
RDS data output.
15*
RDCL
RDS clock output (master mode)/ RDS clock input (slave mode).
16*
RDS-ID/
RDS-ID/READY output (negative polarity).
READY
Pin
No.
No.
Port
Name
Function
RDS
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not
connected to the outside.
connected to the outside.
Using the Radio Data System (RDS)
RDS is a broadcasting service which a growing number of FM stations provide.
These FM stations send additional signals along with their regular programme
signals. They send their station names, and information about the type of pro-
gramme such as sports or music, etc.
When tuned to an RDS station, "RDS" and the station name will be displayed.
"TP" (Traffic Programme) will appear on the display when the received broadcast car-
ries traffic information, and "TA" (Traffic Announcement) will appear whilst a traffic
information is on air.
"EON" will appear whilst the EON (Enhanced Other Networks information) data is
broadcast.
These FM stations send additional signals along with their regular programme
signals. They send their station names, and information about the type of pro-
gramme such as sports or music, etc.
When tuned to an RDS station, "RDS" and the station name will be displayed.
"TP" (Traffic Programme) will appear on the display when the received broadcast car-
ries traffic information, and "TA" (Traffic Announcement) will appear whilst a traffic
information is on air.
"EON" will appear whilst the EON (Enhanced Other Networks information) data is
broadcast.
You can control the RDS by using the remote control only.
■
Information provided by RDS
Each time the DISPLAY button is pressed, the display will switch as
follows:
follows:
When you are tuning in to a station other than an RDS station or to an RDS station
which sends weak signal, the display will change in the following order:
which sends weak signal, the display will change in the following order:
Station name (PS)
Programme type (PTY)
Frequency
NO PS
NO PTY
FM 98.80 MHz
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