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參數(shù)資料
| 型號： | HSP3824 |
| 廠商： | HARRIS SEMICONDUCTOR |
| 元件分類： | 無繩電話/電話 |
| 英文描述： | () |
| 中文描述： | TELECOM, CELLULAR, BASEBAND CIRCUIT |
| 文件頁數(shù)： | 5/18頁 |
| 文件大?。?/td> | 442K |
| 代理商： | HSP3824 |
5
Preamble/Header Page
Preamble Generation CR3<2:2>
This control bit is used to select the origination of the
Preamble/Header information. The preamble and header
can be either generated internally by the HSP3824 or from
an external source.
Transmit Mode CR0<4:3>
These control bits are used to select one of four Preamble
Header modes for transmitting data.
CR0<4:3> Header Contents
00: SFD
01: SFD and CRC16
10: SFD, Length and CRC16
11: SFD, Signal, Service, Length and CRC16
Receive Mode CR2<1:0>
These control bits are used to select one of four Preamble
Header modes for receiving data.
CR2<1:0> Header Contents
00: SFD
01: SFD and CRC16
10: SFD, Length and CRC16
11: SFD, Signal, Service, Length and CRC16
Transmit Preamble Length CR56<7:0>
This control register defines the Preamble length field value.
Start Frame Delimiter Definition CR49<7:0>
CR50<7:0>
These control registers contain the Start Frame Delimiter
used for both the Transmit and Receive header.
Start Frame Delimiter Timer Enable CR0<2:2>
This control bit is used to enable the Start Frame Delimiter
timer. If the timer expires before the SFD has been detected,
the HSP3824 returns to acquisition mode.
Start Frame Delimiter Value CR41<7:0>
This control register contains the number of symbol periods
for the demodulator to search for a SFD in a receive header
before returning to acquisition mode.
Data Field Counter Enable CR0<1:1>
This control bit is used to enable/disable counting the
number of data bits in the length field embedded in the
header. The HSP3824 returns to acquisition mode at the
end of the count. Only used in header modes 2 and 3.
CRC Check Enable CR2<5:5>
This control bit is used to enable/disable the CRC16 check
on the received Header.
F3A0
1111 0011 1010 0000
128
SYMBOLS
GENERATION
(0) SFD
(1) SFD + CRC
(1) SFD + LEN +CRC
(3) SFD + SIG + LEN +CRC
(7) SFD + SIG + DUR + LEN +CRC
EXTERNAL
INTERNAL
Tx PREAMBLE LEN
SFD DEFINITION
(0) SFD
(1) SFD + CRC
(1) SFD + LEN +CRC
(3) SFD + SIG + LEN +CRC
(7) SFD + SIG + DUR + LEN +CRC
SFD TIMER
DATA FIELD COUNTER
CRC CHECK
ENABLE
ENABLE
ENABLE
SYMBOLS
144
TRANSMIT MODE
RECEIVE MODE
EXIT
2:29 PM
BDO:
THRESHOLD SETTINGS
A/D CALIBRATION
MODEM STATUS
SIGNAL STATUS
MODEM CONFIG
I/O CONFIG
TEST PORT CONFIG
DOWNLOAD
P R I S M
PREAMBLE/HEADER
Application Note 9615
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