參數(shù)資料
型號(hào): AMIS-53000
英文描述: Frequency Agile Transceiver
中文描述: 捷變頻收發(fā)器
文件頁(yè)數(shù): 86/99頁(yè)
文件大?。?/td> 2638K
代理商: AMIS-53000
AMIS-53000
Frequency Agile Transceiver
Data Sheet
7.2.8. SOF Byte
Table 102: Suggested SOF
Modulation
Detector
Coding
Preamble
SOF
NRZ
CW
55 (HEX)
AM
RSSI
Manchester
CW
0A (HEX)
FM (<20kbps)
PLL
1 0 pattern
1 0 pattern
Not required
NRZ
Repeating 1/0
Not required
FM (>20kbps)
FFT
Manchester
All 1’s or 0’s
55 (HEX) or AA (HEX)
Depending on whether the mode of operation is AM or FM, NRZ or Manchester, it may be necessary for a SOF byte to precede the
chip ID. This byte is user programmable, and is used to ensure proper CDR operation and bit alignment prior to reception of the chip
ID. When the contents of the SOF byte register are loaded to any non-zero value, this byte will be transmitted prior to the chip ID. For
modes not requiring the SOF byte, setting this register to 00h will prohibit transmission of this byte. More information on when the SOF
byte is required is in the clock and data recovery section.
7.2.9. Timing Diagrams for Various Packet Framing Modes
7.2.9.1.
Use ID Enabled, No CRC, No Packet Length
Table 103: Receive
Parameter
ID
No LOP
No CRC
Table 104: Transmit
Parameter
Transmit
ID
Action
Data interface immediately ready after ID detected
Radio stays in RX until instructed to change
Data is shifted out data port as received
Error checking is not performed and CRC is not attached to packet
Action
Transmit command immediately powers the transmitter on
Transmits preamble
Transmits the ID
Starts data interface and uses a synchronous clock to clock in the TX data (master only)
Transmits each bit as received
Transmitter returns to standby after transmission complete
86
AMI Semiconductor
– Aug. 05, Rev. 1.0
www.amis.com
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