- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄45377 > MJ80C31U-36:D (ATMEL CORP) MICROCONTROLLER PDF資料下載
參數(shù)資料
| 型號： | MJ80C31U-36:D |
| 廠商： | ATMEL CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | MICROCONTROLLER |
| 文件頁數(shù)： | 28/101頁 |
| 文件大?。?/td> | 3398K |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁當前第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁第89頁第90頁第91頁第92頁第93頁第94頁第95頁第96頁第97頁第98頁第99頁第100頁第101頁
55
8168C-MCU Wireless-02/10
AT86RF212
If a transmission is initiated in TX_ARET mode, the AT86RF212 executes the
CSMA-CA algorithm as defined by IEEE 802.15.4-2006, section 7.5.1.4. If the CCA
reports IDLE, the frame is transmitted from the Frame Buffer.
If an acknowledgement frame is requested, the radio transceiver checks for an ACK
reply automatically. The CSMA-CA based transmission process is repeated as long as
no valid acknowledgement is received or the number of frame retransmissions
(MAX_FRAME_RETRIES) is exceeded.
The completion of the TX_ARET transaction is indicated by the IRQ_3 (TRX_END)
interrupt, see section 5.2.5.
Description
The implemented TX_ARET algorithm is shown in Figure 5-12.
Prior to invoking TX_ARET mode, the basic configuration steps as described in section
5.2.2 shall be executed. It is further recommended to write the PSDU transmit data to
the Frame Buffer in advance.
The transmit start event may either come from a rising edge on pin 11 (SLP_TR) or by
writing a TX_START command to register subfield TRX_CMD (register 0x02,
TRX_STATE).
If the CSMA-CA algorithm detects a busy channel, this process is repeated up to
MAX_CSMA_RETRIES (register 0x2C, XAH_CTRL_0). In case that CSMA-CA does
not detect a clear channel after MAX_CSMA_RETRIES, it aborts the TX_ARET
transaction,
issues
interrupt
IRQ_3
(TRX_END),
and
returns
CHANNEL_ACCESS_FAILURE in register bits TRAC_STATUS (register 0x02,
TRX_STATE).
During transmission of a frame, the radio transceiver parses bit 5 (ACK Request) of the
MAC header (MHR) frame to check whether an ACK reply is expected.
If no ACK is expected, the radio transceiver issues IRQ_3 (TRX_END) directly after the
frame transmission has been completed. The register bits TRAC_STATUS (register
0x02, TRX_STATE) are set to SUCCESS.
If an ACK is expected, after transmission the radio transceiver automatically switches to
receive mode waiting for a valid ACK reply (i.e. matching sequence number and correct
FCS). After receiving a valid ACK frame, the “Frame Pending” subfield of this frame is
parsed and the status register bits TRAC_STATUS are updated to SUCCESS or
SUCCESS_DATA_PENDING accordingly, refer to Table 5-15. At the same time, the
entire TX_ARET transaction is terminated and interrupt IRQ_3 (TRX_END) is issued.
If no valid ACK is received within the timeout period (refer to section 5.2.4.1), the radio
transceiver retries the entire transaction (CSMA-CA based frame transmission) until the
maximum number of frame retransmissions is exceeded, see register bits
MAX_FRAME_RETRIES
(register
0x2C,
XAH_CTRL_0).
In
that
case,
the
TRAC_STATUS is set to NO_ACK, the TX_ARET transaction is terminated, and
interrupt IRQ_3 (TRX_END) is issued.
Table 5-15 summarizes the Extended Operating Mode result codes in register subfield
TRAC_STATUS (register 0x02, TRX_STATE) with respect to the TX_ARET
transaction.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| R80C52XXX-12SHXXX | 8-BIT, MROM, 12 MHz, MICROCONTROLLER, CQCC44 |
| MQ80C32-12SBR | 8-BIT, 12 MHz, MICROCONTROLLER, CQFP44 |
| IF180C52XXX-36D | 8-BIT, MROM, 36 MHz, MICROCONTROLLER, PQFP44 |
| IV80C32XXX-36 | 8-BIT, 36 MHz, MICROCONTROLLER, PQFP44 |
| IF180C52CXXX-20R | 8-BIT, MROM, 20 MHz, MICROCONTROLLER, PQFP44 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MJ-80C32E-30 | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Rad. Tolerant 8-bit ROMless Microcontroller |
| MJ-80C32E-30-E | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Rad. Tolerant 8-bit ROMless Microcontroller |
| MJ8100 | 制造商:ASI 功能描述:8100 N11E4C |
| MJ8100R | 制造商:SEME-LAB 制造商全稱:Seme LAB 功能描述:Bipolar PNP Device in a Hermetically sealed TO39 |
| MJ-82-1 | 制造商:SPC Multicomp 功能描述:SOCKET PCB DC POWER 制造商:SPC Multicomp 功能描述:SOCKET, PCB, DC POWER 制造商:SPC Multicomp 功能描述:SOCKET, PCB, DC POWER; Gender:Receptacle; Connector Mounting:PCB; Contact Termination:Through Hole Vertical; Connector Mounting Orientation:PCB; Connector Type:Standard Power Entry ;RoHS Compliant: Yes |
發(fā)布緊急采購，3分鐘左右您將得到回復。