micrf219a Micrel Semiconductor, micrf219a Datasheet - Page 13

• Manufacturer Part Number: micrf219a
• Description: 300mhz To 450mhz Ask/ook Receiver With Auto-poll, Rssi, And Squelch
• Manufacturer: Micrel Semiconductor

Micrel, Inc.
Serial Interface Register Programming
There are twenty register bits in MICRF219A. The
functions are described in the following tables.
July 2011
D18
D19
Pin
SQ
D16
D15
0
0
1
1
0
1
Always set this bit to 1
Always set this bit to 0
Always set this bit to 0
Auto-Poll Enable
Awake – does not poll - default
Auto-polls with sleep periods
D17
0
1
0
1
Squelch Enable
Squelch Circuit Enabled
Squelch Circuit Disabled
Squelch Circuit Disabled (default)
Squelch Circuit Enabled
13
Default value of D[11:9] = 111.
D14
D11
D11
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
D13
D10
D10
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
D12
0
1
0
1
0
1
0
1
D9
D9
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
[e-mail]
Set Sleep Time
10ms
20ms
40ms Default
80ms
160ms
320ms
640ms
1280ms
Set Bit-Check Window Time
(315 MHz, time in μs)
D4=1
D3=1
98
92
85
79
72
66
59
53
Set Bit-Check Window Time
(433.92 MHz, time in μs)
D4=1
D3=1
71
67
62
57
52
48
43
38
D4=1
D3=0
196
183
170
157
144
131
118
105
D4=1
D3=0
143
133
124
114
105
95
86
76
or [phone]
D4=0
D3=1
393
367
341
314
288
262
236
210
D4=0
D3=1
285
266
247
228
209
190
172
152
M9999-071811-A
MICRF219A
D4=0
D3=0
785
733
681
629
577
525
473
420
D4=0
D3=0
570
532
494
457
419
381
343
305