TDA7402 Datasheet, PDF (39/59 Pages) STMicroelectronics – CARRADIO SIGNAL PROCESSOR

TDA7402
8.0 DUAL MPX USAGE
8.1 Feature Description
The A619 is able to support a twin tuner concept via the Dual-MPX-Mode. In this configuration the MPX-pin and
the MD2G-pin are acting as MPX1 and MPX2 inputs. The DC-Voltage at the MD2-pin controls whether one or
both MPX-signals are used to decode the stereo FM-signal. It is designed as a window-comparator with the
characteristic shown in Figure 1 (Please note that the thresholds have a hysteresis of 500mV).
In this mode the stereodecoder highohmic-mute mutes both inputs in parallel.
Figure 33.
8.2 Configuration
The Dual-MPX-Mode can be easily configured by setting bit 3 of subaddress 30 to LOW (see Byte 30 description
and Application Diagram of fig. 35).
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