EP7209-CB-A Просмотр технического описания (PDF) - Cirrus Logic

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EP7209-CB-A

Ultra-Low-Power Audio Decoder System-on-Chip

Cirrus Logic 

EP7209

2.2.3 Output Bi-Directional Pins

RUN

Drive [0:1]

DD[3:0]

The RUN pin is looped back in to skew the address and data bus from each other.

Drive 0 and 1 are looped back in on power up to determine what polarity the output of the PWM should be

when active.

DD[3:0] are looped back in on power up to enable the reading of the ID of some LCD modules.

NOTE:

The above output pins are implemented as bi-directional pins to enable the output side of the pad to

be monitored and hence provide more accurate control of timing or duration:

Table 6. Output Bi-Directional Pins

DS453PP2

17

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