
Micrel, Inc.
Serial Interface Register Programming
MICRF219A
There are twenty register bits in MICRF219A. The
functions are described in the following tables.
D14
0
0
D13
0
0
D12
0
1
Set Sleep Time
10ms
20ms
D19
D18
Always set this bit to 0
Always set this bit to 1
0
0
1
1
1
0
0
1
0
40ms Default
80ms
160ms
SQ
Pin
0
D17
0
Squelch Enable
Squelch Circuit Enabled
1
1
1
0
1
1
1
0
1
320ms
640ms
1280ms
0
1
Squelch Circuit Disabled
1
0
Squelch Circuit Disabled (default)
Set Bit-Check Window Time
1
1
Squelch Circuit Enabled
D11
D10
D9
(315 MHz, time in μ s)
D4=1 D4=1 D4=0
D4=0
D16
Always set this bit to 0
D3=1
D3=0
D3=1
D3=0
0
0
0
98
196
393
785
D15
0
1
Auto-Poll Enable
Awake – does not poll - default
Auto-polls with sleep periods
0
0
0
1
1
1
1
0
1
1
0
0
1
1
1
0
1
0
1
0
1
92
85
79
72
66
59
53
183
170
157
144
131
118
105
367
341
314
288
262
236
210
733
681
629
577
525
473
420
Set Bit-Check Window Time
D11
D10
D9
(433.92 MHz, time in μ s)
D4=1 D4=1 D4=0
D3=1
D3=0
D3=1
D4=0
D3=0
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
71
67
62
57
52
48
43
38
143
133
124
114
105
95
86
76
285
266
247
228
209
190
172
152
570
532
494
457
419
381
343
305
Default value of D[11:9] = 111.
July 2011
13
M9999-071811-A
RadioTech@micrel.com or (408) 944-0800