AS3933 datasheet(44/64 Pages) AMSCO

44 / 64 page

ams Datasheet

Page 43

[v1-08] 2015-Sep-02

Document Feedback

AS3933 − Detailed Description

Wake-Up Protocol

The AS3933 can support different protocols:

• Frequency detection only (no pattern correlation)

• Single pattern detection

• 16-bit pattern

• 32-bit pattern

• Double pattern detection

• 16-bits pattern

• 32-bits pattern

The wake-up state can be terminated either by the host system

(MCU) with the direct command ‘clear_wake’ sent over SPI (see

direct command details in Figure 29) or with a time-out option.

In case the latter is used the host system (MCU) does not need

to take any action to terminate the wake-up state and the chip

is set back to listening mode automatically after a predefined

time. It is possible to set the duration of the time-out with the

Figure 49:

Timeout Setup

R7<7>

R7<6>

R7<5>

Time Out

disabled

50 msec

100 msec

150 msec

200 msec

250 msec

300 msec

350 msec

AS3933 数据表(PDF) 44 Page - ams AG

AS3933 数据表(HTML) 44 Page - ams AG

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64

数据表下载