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MICRF219 Datasheet(PDF) 11 Page - Micrel Semiconductor

Part # MICRF219
Description  300MHz to 450MHz ASK Receiver with RSSI, Auto-Poll, Bit-Check and Squelch
PDF  24 Pages
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Manufacturer  MICREL [Micrel Semiconductor]
Direct Link  http://www.micrel.com
Logo MICREL - Micrel Semiconductor

MICRF219 Datasheet(HTML) 11 Page - Micrel Semiconductor

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Micrel
MICRF219
January 2009
11
M9999-011509
(408) 944-0800
lect
D16
MODE: Demod BW Se
0
Normal Demod BW’s - default
1
as
vailable)
F t Demod BW’s, (not a
SQ Pin
D1
ch Enable
7
MODE: Squel
0
0
quelch Circuit Enabled
S
0
1
it Disabled
Squelch Circu
1
0
Squelch Circuit Disabled
(default)
1
1
Squelch Circuit Enabled
The external pin SQ can invert the setting of squelch
on/off defined by register bit D17. The external pin
au
hig
ia
-up so the squelch is
off w
if D17 = 1. Such bit
logic
o low (Ground).
D18
D3
MODE: Bit-Check
out
def lts
h v
an internal pull
ith default D17 = 0 and on
is reversed if SQ pin is tied t
D4
Watchdog Time
Sleep polling watchdog active - d
Watchdog time
efault
for D3, D4, BW setting
0
0
20ms
0
1
5ms
1
0
10ms
0
1
1
5ms
1
Sleep polling watchdog disabled - unlimited
poll period
DE: RSSI
D19
MO
0
RSSI offset 0mV
- default
1
RSSI offset +200mV
D19
MODE: Fast AGC Settling Disable
0
All improved fast attack AGC and CTH
hold circuits are enabled - default
1
Fast attack and CTH hold operation is
disabled



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