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參數(shù)資料
| 型號： | MC13226VR2 |
| 廠商： | FREESCALE SEMICONDUCTOR INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | SPECIALTY MICROPROCESSOR CIRCUIT, PBGA99 |
| 封裝： | 9.50 X 9.50 MM, 1.20 MM HEIGHT, ROHS COMPLIANT, LGA-99 |
| 文件頁數(shù)： | 8/54頁 |
| 文件大?。?/td> | 490K |
| 代理商： | MC13226VR2 |
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MC1322x Technical Data, Rev. 1.3
16
Freescale Semiconductor
The MACA is responsible for construction of packets for TX including FCS, and for parsing the received
packets. The MACA will also handle ACKs and TxPoll sequences independent of the ARM processor.
During TX the MACA will construct the entire packet. This includes preamble and SFD (start of frame
delimiter). During receive, the modem will recognize preamble and SFD, then the MACA will begin
receiving the packet with the first bit of frame length, and finally, will check the FCS.
Figure 5. MAC Accelerator Simplified Block Diagram
3.4.1.1
MACA Features
In order to reduce CPU load, the MACA module has embedded features for controlling parts of the IEEE
802.15.4 PHY and MAC layer requirements. The MACA core features include:
Sequence Manager sequences / auto sequences
— RX only
— TX only
— Automatic acknowledgment frame reception on transmitted packets
— Automatic acknowledgment frame transmission on received packets
— Auto-RX for continuous reception as coordinator
— Auto sequence for transmitted MAC data.request
— Assist for efficient response to MAC data.request
— Embedded channel assessment in sequence
— Support for sequences with slotted mode access
— Timer triggered and immediately executed actions
— Support for extended RX for reception in random backoff and battery life extension
— Support for promiscuous mode
Programmable auto sequence timing - Each CCA, RX, or TX event is an independent operation.
The radio gets through a power-up or “warm-up” sequence for each operation (including VCO),
and there is also a power-down or “warm-down” time. Sequences are combinations of radio
operations and are highly configurable.
— RX warm-up is 72 s
TX Packet
Buffer
RX Packet
Buffer
Sequencer
Timers
FCS Generator/
Checker
DMA
Control
Registers
MACA
To
Transceiver
Modem
To
MCU
Bus
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MC1322X | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Advanced ZigBee?- Compliant Platform-in-Package (PiP) for the 2.4 GHz IEEE? 802.15.4 Standard |
| MC132333C | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Low Cost SoC Remote Control Platform for the 2.4 GHz IEEE? 802.15.4 Standard |
| MC13233C | 功能描述:射頻收發(fā)器 82KB FLASH 5KB RAM RoHS:否 制造商:Atmel 頻率范圍:2322 MHz to 2527 MHz 最大數(shù)據(jù)速率:2000 Kbps 調(diào)制格式:OQPSK 輸出功率:4 dBm 類型: 工作電源電壓:1.8 V to 3.6 V 最大工作溫度:+ 85 C 接口類型:SPI 封裝 / 箱體:QFN-32 封裝:Tray |
| MC13233CR2 | 功能描述:射頻收發(fā)器 82KB FLASH 5KB RAM RoHS:否 制造商:Atmel 頻率范圍:2322 MHz to 2527 MHz 最大數(shù)據(jù)速率:2000 Kbps 調(diào)制格式:OQPSK 輸出功率:4 dBm 類型: 工作電源電壓:1.8 V to 3.6 V 最大工作溫度:+ 85 C 接口類型:SPI 封裝 / 箱體:QFN-32 封裝:Tray |
| MC13234CHT | 功能描述:射頻收發(fā)器 8BIT 128K NON ADC 8KB RA RoHS:否 制造商:Atmel 頻率范圍:2322 MHz to 2527 MHz 最大數(shù)據(jù)速率:2000 Kbps 調(diào)制格式:OQPSK 輸出功率:4 dBm 類型: 工作電源電壓:1.8 V to 3.6 V 最大工作溫度:+ 85 C 接口類型:SPI 封裝 / 箱體:QFN-32 封裝:Tray |
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