MICRF219AYQS 查看數據表（PDF） - Micrel
零件编号
产品描述 (功能)
生产厂家
MICRF219AYQS Datasheet PDF : 23 Pages
| |||
Micrel
MICRF219
Serial Interface Register Programming
Control Register Individual Truth Tables:
D0
D1
0
X
1
0
1
1
1
0
1
1
D2 MODE: Desense
X
No Desense - default
0
6dB Desense
0
16dB Desense
1
30dB Desense
1
42dB Desense
D3
D4
MODE:
Demod Bandwidth (at 433.92MHz)
0
0
1625Hz
1
0
3250Hz
0
1
6500Hz
1
1
13000Hz - default
D5
D6 MODE
1
0
Slice Level 30%
0
1
Slice Level 40%
1
1
Slice Level 50% - default
0
0
Slice Level 60%
D7
D8
MODE: Bit-Check Setting
0
0
Bit-check 0 bits - default
1
0
Bit-check 2 bits
0
1
Bit-check 4 bits
1
1
Bit-check 8 bits
D9 D10 D11
Set D3 to
Set D4 to
00
0
10
0
01
0
11
0
00
1
10
1
01
1
11
1
MODE:
Bit-Check Window Times (315
MHz)
D3=1 D3=0 D3=1 D3=0
D4=1 D4=1 D4=0 D4=0
98us, 196us, 393us, 785us
92us, 183us, 367us, 733us
85us, 170us, 341us, 681us
79us, 157us, 314us, 629us
72us, 144us, 288us, 577us
66us, 131us, 262us, 525us
59us, 118us, 236us, 473us
53us, 105us, 210us, 420us
D9 D10 D11
Set D3 to
Set D4 to
00
0
10
0
01
0
11
0
00
1
10
1
01
1
11
1
MODE:
Bit-Check Window Times
(433.92MHz)
D3=1 D3=0 D3=1 D3=0
D4=1 D4=1 D4=0 D4=0
71us, 143us, 285us, 570us
67us, 133us, 266us, 532us
62us, 124us, 247us, 494us
57us, 114us, 228us, 457us
52us, 105us, 209us, 419us
48us, 95us, 190us, 381us
43us, 86us, 172us, 343us
38us, 76us, 152us, 305us
Default State D9, D10, D11 is 111
D12
D13
D14
MODE:
Sleep Time
0
0
0
10ms
1
0
0
20ms
0
1
0
40ms Default
1
1
0
80ms
0
0
1
160ms
1
0
1
320ms
0
1
1
640ms
1
1
1
1280ms
D15 MODE: Auto-Poll
0
Awake – does not poll - default
1
Auto-polls with Sleep periods
D16 Always Set This Bit to 0
SQ Pin
0
0
1
1
D17 MODE: Squelch Enable
0
Squelch Circuit Enabled
1
Squelch Circuit Disabled
0
Squelch Circuit Disabled (default)
1
Squelch Circuit Enabled
The external pin SQ can invert the setting of squelch
on/off defined by register bit D17. The external pin
defaults high via an internal pull-up so the squelch is
off with default D17 = 0 and on if D17 = 1. Such bit
logic is reversed if SQ pin is tied to low (Ground).
D18 Always Set This Bit to 1
D19 Always Set This Bit to 0
June 2011
11
M9999-060811
(408) 944-0800
Share Link: 