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Revision 2.3

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AS8525

Datasheet - Application In form atio n

Figure 12. RX Interface

8.7 MODE Input EN

Device is switched from standby mode to normal mode with a rising edge at the EN pin. The mode change for AS8525 with a falling edge on EN

can be done independently from the state of the transceiver bus. The device enters into Serial port mode by forcing EN low and driving TX high

microcontroller using EN pin.

Figure 13. EN Pin Functionality

The EN input has an internal active pull down to secure that if this pin is not connected, a low level will be generated.

RX

VCC

AS8525

MCU

Entry into

Serial Port

Mode

EN

RD

WR

LEN1 LEN0 A4

D3

D2

D1

D0

Normal

Mode

Serial Port

Mode

Normal

Mode

Standby/Sleep

Mode

Normal

Mode

TX