AMIS-53050 Datasheet, PDF (58/107 Pages) AMI SEMICONDUCTOR – Frequency Agile Transceiver

AMIS-53050 Frequency Agile Transceiver
Data Sheet
Figure 38: RSSI Curve
6.5.1.4. Data Recovery
Table 35: Receiver Configuration
RX Configuration Registers
0X0E RX Config
0X1F CDR
Options A
0X0B Data Rate
Format
0X1E
Filter
Slice
Data Rage
Preamble CDR
SOF
Bit 2 Mod Bit 0 Demod Bit 3 Code Bit 1:0
0
NRZ¹
SLICE²
>20k – 128k
10Pattern
Yes³
No
0
FFT
1
Man
SLICE²
>20k – 128k
10Pattern
Yes³
No⁴
0
FM
0
NRZ¹
SLICE²
<20k
10Pattern
Yes³
No
1
PLL
1
Man
SLICE²
<20k
All 1 or 0’s Yes³
0X55
0XAA
0
NA⁶
0
NRZ
SLICE²
1k – 19.2k
1
Man
SLICE²
1k – 19.2k
1
AM
1
NA⁶
0
NRZ
SLICE²
1k – 19.2k
1
Man
SLICE²
1k – 19.2k
CW
Opt⁷
0X55
CW
Opt⁷
0X0A
CW
Opt⁷
0X55
CW
Opt⁷
0X0A
Notes:
1. Long strings of 1’s or 0’s will degrade the performance of the CDR circuits.
2. SLICE can use the parameters in Table 37.
3. Yes indicates that CDR is always used to detect the data. (See Table 41 and Table 42 for CDR parameters)
4. Manchester encoded data requires a SOF. A unique SOF (suggested 0x66) is used to bit-align the Manchester decoder to the recovered data.
5. 0X55 or 0X0A SOF have the following requirements:
0x55 The following is suggested:
It is suggested that CDR with fast phase alignment be enabled
It is suggested that CDR with activity check be enabled with 8 or 16 bit times
It is suggested that the preamble be long enough to trigger activity check (10 or 20 bit times)
0x0A The following is suggested:
It is suggested that CDR with fast phase alignment be enabled
It is suggested that CDR with activity check be enabled with 4 bit times
It is suggested that the preamble be long enough to trigger activity check
6. NA indicates that the parameter is not available for the AM/OOK modulated signals.
7. OPT indicates that CDR is an option to detect the data however, it is recommended that CDR be used. (See Table 41 and Table 42 for CDR parameters)
AMI Semiconductor – Jan. 07, M-20639-002
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