MICRF219 datasheet(18/24 Pages) MICREL

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Micrel

MICRF219

Serial Interface Register Loading Examples

See Figures 15 – 17. (Channel 1 is the DO pin, and

channel 2 is the SCLK pin).

= 1, D17 = D0 = 0

ple

dwidth = 1712 hertz, 1

500 usec. Required

500usec = 1300 hertz

vel = 50%

bit check = 4 bits. This is the time the

cking for four consecutive valid

1, D11 = 0, data rate is 1 kHz, (500 usec

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

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

msec is OFF.

D15 = 1, device is placed in autopoll

s set to 0.

D17 = 0, squ

Figure 15. All bits D19 through D0 = 0

Figure 17. D19 = D18

Auto-Poll Programming Exam

Auto-Poll example, see Figure 18

D0 = D1 = D2 = 0, no desense

D3 = D4 = 0, demodulator ban

kHz baud rate, pulse =

demodulator bandwidth is 0.65/

D5 = D6 = 1, Slice le

D7 = 0, D8 = 1,

device is ON che

window

D9 = D10 =

pulses

D12 = D13 =

that is, 4 bit is ON and 160

16 = 0, not use . Alway

elch is OFF

Figure 16. All bits D19 through D0 = 1

hdog timer is OFF

D19 = 0, no RSSI offset

From MSB to LSB, see Table 9:

D19

D18

D17

D16

D15

D14

D13

D12

18 = 1, watc

D11 D10 D9

Table 9. Auto-Poll example bit sequence.

January 2009

M9999-011509

(408) 944-0800

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