Справочник Пользователя для Boss Audio Systems CCR612
Philips Semiconductors
User Manual of High-End RDS/EON
Car Radio System CCR612 (V0.3)
Car Radio System CCR612 (V0.3)
Application Note
96029
4.2.2
Automatically detected options
CCR612S will detect the following options automatically:
Digital sound control chip.
Presence / absence of a sound control chip (TEA632x) is detected by testing its I
2
C bus address.
NOTE: The output pins AUMUTE, LOUDN and TA are always operational, even when a digital sound
control chip is installed. Cassette solenoid and AMS pause control functions are not available in case
no TEA632x is installed.
control chip is installed. Cassette solenoid and AMS pause control functions are not available in case
no TEA632x is installed.
AMS
}
DOLBY
}
These functions are not available if the corresponding
MTL
}
output pin is connected to Vdd except for pins CAMS
LOUDNESS
}
and LOUD which must be connected to ground.
DIAGNOSTICS
}
Presence of the CD-changer (check during power-on)
4.3
I
2
C bus addresses
CCR612 I
2
C bus peripherals will be accessed at the following addresses:
C4 h PLL synthesizer TEA6811V
C2 h IF system TEA6822T
80 h Sound control circuit TEA632x
A0 h NVM PCF8594
C2 h IF system TEA6822T
80 h Sound control circuit TEA632x
A0 h NVM PCF8594
(The PCF8594 responds automatically to address A2 h for access to its upper half);
40 h I/O expander PCF8574
70 h Display driver PCF8576
70 h Display driver PCF8576
4.4
The keyboard
Two different configurations are possible:
1.
A fixed keyboard, directly connected to the microcontroller.
2.
A detachable keyboard, using an I/O expander to connect to the microcontroller via a dedicated
I
I
2
C bus. A fixed keyboard with a limited number of keys still remains possible.
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