參數(shù)資料
型號: XE8807AMI026TLF
廠商: Semtech
文件頁數(shù): 125/143頁
文件大小: 0K
描述: IC MCU LOW PWR MTP FLASH 32-TQFP
標準包裝: 1
系列: XE880x
應用: 感測機
核心處理器: Coolrisc816?
程序存儲器類型: 閃存(11 kB)
控制器系列: XE8000
RAM 容量: 512 x 8
接口: UART,USRT
輸入/輸出數(shù): 24
電源電壓: 2.4 V ~ 5.5 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 32-TQFP
包裝: 標準包裝
供應商設備封裝: 32-TQFP(7x7)
產(chǎn)品目錄頁面: 585 (CN2011-ZH PDF)
配用: XE8000MP-ND - PROG BOARD AND PROSTART2 CARD
其它名稱: XE8807AMI026DKR
Semtech 2006
www.semtech.com
14-2
XE8806A/XE8807A
14.1
Introduction
This block is a PCM Bit Stream Encoder / Decoder or RF Receiver / Transmitter Interface. In a normal
microcontroller, the bits and low level coding of the RF protocol are done by software. This is a very tedious and
CPU time consuming task since the processor has to handle bit by bit as they are received or as they have to be
transmitted. This block simplifies the handling of the low level data handling for wireless data transmission systems
very much in a similar way an UART interface does for wired transmission systems.
14.2
Features
Two functions : Receiver and Transmitter (half duplex)
Internal baud rate generator for all the standard baud rates
Decode / encode 3 main PCM codes (NRZ, Bi-Phase and Miller), can be bypassed
Buffered input / output data (FIFO)
4 interrupt sources
Internal or external bit synchronization
Internal or external start sequence detection
14.3
General overview
The RF Interface block is a bit stream receiver / transmitter for wireless transmission. It can be used with XEMICS’
or third party RF transceiver circuits.
Start
Detection
PCM
Decoder
Reception
Input Stream
Prescaler
Transmission
Control
Enable/Bypass
Clock
Baudrate/PCMType
clock
Output Stream
External clock
data
PCM Type
Ctrl Sig.
Status.
Ctrl Sig.
Status.
PCM Encoder / Decoder
Clock
Interrupts
Shift Register
Match
RFIF0
RFIF1
RFIF2
RFIF3
Filter
PCM
Encoder
Enable/Bypass
FIFO
Figure 14-1 : PCM Encoder / Decoder Structure
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