MICRF229 datasheet(16/23 Pages) MICREL

Part #	MICRF229

Description	400MHz to 450MHz ASK/OOK Receiver with Auto-Poll and RSSI

PDF	23 Pages

Scroll/Zoom	100%

Manufacturer	MICREL [Micrel Semiconductor]

Direct Link	http://www.micrel.com

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16 / 23 page

Micrel, Inc.

MICRF229

April 15, 2015

Revision 1.0

Auto-Poll Programming Example

RF frequency 433.92MHz, bit rate 1kbps, bit width 1ms.

D[19] = 0, AGC fast attack and CTH hold enabled

D[18] = 1, watchdog timer is OFF

D[17] = 0, default

D[16] = 0, High demod bandwidth isn’t used

D[15] = 1, device is placed in auto-poll

D[14:12] = 100, sleep time 160ms

D[11:9] = 011, bit check window time 457μs with D[4:3] =

D[8:7] = 10, number of consecutive valid bits is 4

D[6:5] = 11, slice level 50%

D[4:3] = 00, demodulator bandwidth = 1.625kHz

D[2:0] = 000, default

From MSB to LSB, see Table 11:

Table 10. Auto-Poll Example Bit Sequence

D18

D17

D16

D15

D14

D13

D12

D11

D10

−

Figure 12. Auto-Poll Example

MICRF229 Datasheet(PDF) 16 Page - Micrel Semiconductor