參數(shù)資料
型號： AMIS-53050
英文描述： Frequency Agile Transceiver
中文描述： 捷變頻收發(fā)器
文件頁數(shù)： 59/107頁
文件大?。?/td> 2576K
代理商： AMIS-53050
AMIS-53050
Frequency Agile Transceiver
Data Sheet
AM Data Recovery with RSSI
T
og
output level. A low pass filte pro
19.2kbp
to a fixe
The RSSI output signal can
the incoming data rate (see
Register descri
Slice Threshold
- T
set.
c AM detector, used
ted signals, produces an RSSI output signal with approximately 18mV/dB
additional filtering matched to the AM signal data rate (1.2, 1.8, 2.4, 4.8, 7.2, 9.6, 14.4,
an
king
l trac
circuit to set a peak or average threshold.
gn
sam
gna
hold can be set
n use
e
lied to a clock and data recovery circuit, which synchronizes an AMIS-53050 internal clock with
n).
eratio
Op
slic
utomatic. The value for the fixed threshold needs to be
Filter/Slice
- Filter s
gs
Slice Threshold
S
the
register is set to DAC.
Table 36: Slice
Bit
Name
7:0
SL_THRESH [7:0]
A
ta
M Da Filter an
This register contains settings for de
_FILTER:
Sets the post-detection filter bandwidth for RSSI during AM receive. These filter bandwidths are set for the
responding d a rates. hese filter settings can also be used with custom data rates.
cor
T
he l
arithmi
with OOK/ASK modula
vides
pled
d compared to the slice threshold to recover the digital data. The slice thres
al is
a si
s). This filtered si
value or it ca
d
also b app
CDR
ptions:
he
e operation needs to be selected, fixed or a
ettin
and slice mode need to be selected.
level for
rece
. This threshold is used when the slice method sets in the AM data filter and slice options
ption
hold - 0X1D [29]
ets
data slice
AM
Thres
Comment
AM slice threshold in DAC mode = SL_THRESH*7.8125mV
d Slice Opt
ions
thod of slicing for AM receive mode.
termining the me
AM_HYST:
Sets the amount of hysteresis in the AM slice comparator.
AM_SLICE:
Us
elec
ethod for providing a reference to the AM slice comparator.
t the m
DAC M
This is a fixed threshold level programmed into the slice threshold register.
ode:
Averag
leve
e:
SSI signal. An external capacitor is required on the PEAK pin to set a bandwidth for the low pass filter
response of the a
ging circuit. .
vera
n automatic threshold level where the AMIS-53050 sets the threshold level to the average
This is a
l of
Peak M
and the AMIS-530
pin dete
the application note “Setting up the AMIS-52100 Data Slicing Modes” which applies also to this AMIS-53050
parameter.
This is similar to the average mode, but only the highest level is determined from the incoming signal
ts the threshold to a level 6dB lower than the peak value. An external capacitor on the PEAK
s a
e) rate for the peak detector circuit. The value of this capacitor is discussed in
rmine
bleed off (discharg
AM
ed to s
e Mod
the R
ode:
50 se
59
AMI Semiconductor
– Jan. 07, M-20639-002
www.amis.com
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