MICRF219 datasheet(19/23 Pages) MICREL

19 / 23 page

Micrel

MICRF219

June 2011

M9999-060811

(408) 944-0800

Figure 17. D19 = D18 = 1, D17 = D0 = 0

Figure 18):

nse

12 h

= 500µsec.

500usec =

bits.

e is ON checking for four

1 = 0, data rate is 1 kHz, (500µsec

pulses), window set to 433µsec (< 500 usec)

D12 = D13 = 0, D14 = 1, sleep timer set to 160msec,

that is, 4 bit is ON and 160msec is OFF.

D15 = 1, device is placed in autopoll

D16 = 0, not used. Always set to 0.

D17 = 0, squelch is OFF

D18 = 1, watchdog timer is OFF

D19 = 0, no RSSI offset

From MSB to LSB (see Table 9):

D19

D18

D17

D16

D15

D14

D13

D12

Auto-Poll Programming Example

Auto-Poll example (see

D0 = D1 = D2 = 0, no dese

D3 = D4 = 0, demodulator bandwidth = 17

kHz baud rate, pulse

ertz,

Required demodulator bandwidth is 0.65/

1300 hertz

D5 = D6 = 1, Slice level = 50%

D7 = 0, D8 = 1, bit check = 4

This is the time th

consecutive valid w

e devic

indows.

D9 = D10 = 1, D1

11 D10 D9

Table 9. Auto-Poll Example Bit Sequence

Figure 18. Autopoll Example

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