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Philips Semiconductors
User Manual of High-End RDS/EON
Car Radio System CCR612 (V0.3)
Application Note
96029
treble, balance and fader to mid-range and will switch loudness off. The display shows the text "RESET"
for 2 seconds.
6.4.4 The MUTE key
When the mute key is pressed, all audio output is suppressed, and the display will show the text
"MUTE". Any keypress will cancel the mute state. The audio control settings are not altered. When TA
mode is on and a traffic announcement or a PTY alarm message is broadcast, the mute state is
temporarily suspended.
6.4.5 Phone mute
When pin Aumute is pulled to ground externally by a connected car phone, the car radio sound is muted
and the display will show "PHONE".
6.4.6 Power amplifier diagnostics control
CCR612 canbe equipped withpower amplifierswith a diagnosticsinterface. This interfaceconsists ofone
pin which is low at erroneous situations. CCR612S will continuously monitor this pin and can detect one
of the following situations:
Clipping
- The bass and or volume level will be decreased depending on the amount of clipping.
- While clipping is detected and clipping control is active the clipping icon is on.
Too high temperature / short circuit
- CCR612 will display the error message "ERROR" on the LCD.
6.4.7 User programmable options
Some options can be programmed by the user. The options are stored in NVM, and remain in effect until
reprogrammed by the user. The options are:
2 SPKRS / 4 SPKRS
Indicates how many loudspeakers are connected to the radio. If "2 speakers" is selected, the fader
function is not available, and fader setting is always mid-range.
LOUD ON / LOUD OFF
If noloudness key is installed,loudness can beswitched on/off usingthis option incase the loudness
function is available.
TALVL-2/-1/0/+1/+2
The volume level during a Traffic Announcement or PTY Alarm can be set to one of 5 fixed values
varying from -12 dB to -4 dB in steps of 2 dB. When this function is selected during Traffic
Announcement or PTY Alarm the volume level will change to the level selected.
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