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MICRF219 데이터시트(PDF) 18 Page - Micrel Semiconductor

부품명 MICRF219
상세설명  300MHz to 450MHz ASK Receiver with RSSI, Auto-Poll, Bit-Check and Squelch
PDF  24 Pages
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제조업체  MICREL [Micrel Semiconductor]
홈페이지  http://www.micrel.com
Logo MICREL - Micrel Semiconductor

MICRF219 데이터시트(HTML) 18 Page - Micrel Semiconductor

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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
s.
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
D
d
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
D
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
0
1
0
0
1
1
0
0
D11 D10 D9
D8
D7
D6
D5
0
1
1
1
0
1
1
D4
D3
D2
D1
D0
0
0
0
0
0
Table 9. Auto-Poll example bit sequence.
January 2009
18
M9999-011509
(408) 944-0800



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