전자부품 데이터시트 검색엔진
  Korean  ▼
ALLDATASHEET.CO.KR

X  

MRF89XA 데이터시트(PDF) 84 Page - Microchip Technology

부품명 MRF89XA
상세설명  Ultra Low-Power, Integrated ISM BandSub-GHz Transceiver
Download  140 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
제조업체  MICROCHIP [Microchip Technology]
홈페이지  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

MRF89XA 데이터시트(HTML) 84 Page - Microchip Technology

Back Button MRF89XA Datasheet HTML 80Page - Microchip Technology MRF89XA Datasheet HTML 81Page - Microchip Technology MRF89XA Datasheet HTML 82Page - Microchip Technology MRF89XA Datasheet HTML 83Page - Microchip Technology MRF89XA Datasheet HTML 84Page - Microchip Technology MRF89XA Datasheet HTML 85Page - Microchip Technology MRF89XA Datasheet HTML 86Page - Microchip Technology MRF89XA Datasheet HTML 87Page - Microchip Technology MRF89XA Datasheet HTML 88Page - Microchip Technology Next Button
Zoom Inzoom in Zoom Outzoom out
 84 / 140 page
background image
MRF89XA
DS70000622D-page 84
Preliminary
 2010-2017 Microchip Technology Inc.
3.11.1
TX PROCESSING
In TX mode, the packet handler dynamically builds the
packet by performing the following operations on the
payload available in the FIFO:
• Adding a programmable number of preamble
bytes
• Adding a programmable Sync Word
• Optionally calculating CRC over complete pay-
load field (optional length byte plus optional
address byte plus message) and appending the 2
bytes checksum
• Optional support for DC-free encoding of the data
(Manchester or Whitening)
Only the payload (including optional address and
length fields) should be provided by the user in the
FIFO.
Assuming that the device is in TX mode, and then
depending on the setting of the IRQ0TXST bit (FTPRI-
REG<4>), packet transmission (starting with pro-
grammed preamble) starts either after the first byte is
written into the FIFO (IRQ0TXST = 1) or after the num-
ber of bytes written reaches the user-defined threshold
(IRQ0TXST = 0). The FIFO can be fully or partially filled
in
Standby
mode
through
the
FRWAXS
bit
(FCRCREG<6>). In this case, the start condition is only
checked when entering TX mode.
At the end of the transmission (TXDONE = 1), the user
must exit TX mode if required (for example, back to
Standby mode).
While in TX mode, before and after packet transmis-
sion (not enough bytes or TXDONE), additional pream-
ble bytes are sent to the modulator. When the start
condition is met, the current additional preamble byte is
completely sent before the transmission of the next
packet (that is, programmed preamble) is started.
3.11.2
RX PROCESSING
In RX mode the packet handler extracts the user
payload to the FIFO by performing the following
operations:
• Receiving the preamble and stripping off the
preamble
• Detecting the Sync Word and stripping off the
Sync Word
• Optional DC-free decoding of data
• Optionally checking the address byte
• Optionally checking CRC and reflecting the result
on the STSCRCEN bit (PKTREG<0>) and
CRCOK from IRQ source (for more information,
refer to Register 2-14).
Only the payload (including optional address and
length fields) is made available in the FIFO.
PLREADY and CRCOK interrupts (the latter only if
CRC is enabled) can be generated to indicate the end
of the packet reception (for more information, refer to
Register 2-14).
By default, if the CRC check is enabled and fails for the
current packet, the FIFO is automatically cleared and
neither of the two interrupts is generated and a new
packet reception is started. This autoclear function can
be disabled via the ACFCRC bit (FCRCREG<7>) and,
in this case, even if CRC fails, the FIFO is not cleared
and only the PLREADY IRQ source is issued.
Once fully received, the payload can also be fully or
partially retrieved in Standby mode from the FRWAXS
bit. At the end of the reception, although the FIFO auto-
matically stops being filled, it still depends on the user
to explicitly exit RX mode if required (for example, go to
Standby mode to get payload). The FIFO must be
empty for a new packet reception to start.
3.11.3
PACKET FILTERING
The MRF89XA packet handler offers several mecha-
nisms for packet filtering ensuring that only useful
packets are made available to the host microcontroller,
significantly reducing system power consumption and
software complexity.
3.11.3.1
Sync Word-Based
Sync Word filtering or recognition is enabled in Packet
mode. It is used for identifying the start of the payload
and also for network identification. As described earlier,
the Sync Word recognition block is configured (with
size, error tolerance, value) from the SYNCREN, SYN-
CWSZ, SYNCTEN, SYNCV31-0 bits in the SYNCREG,
SYNCV31REG, SYNCV23REG, SYNCV15REG, and
SYNCV07REG Configuration registers. This informa-
tion is used for appending Sync Word in TX and filtering
packets in RX.
Every received packet that does not start with this
locally configured Sync Word is automatically dis-
carded, and no interrupt is generated.
When the Sync Word is detected, payload reception
automatically starts and the Sync IRQ source is issued.
3.11.3.2
Length-Based
In variable length Packet mode, the PLDPLEN<6:0>
bits (PLOADREG<6:0>) must be programmed with the
maximum length permitted. If the received length byte
is smaller than this maximum, the packet is accepted
and processed; otherwise, it is discarded.
To disable this function, the user should set the value of
the PLDPLEN<6:0> bits to the value of the FIFO size
selected.
Note:
The received length byte, as part of the
payload, is not stripped off the packet and
is made available in the FIFO.


유사한 부품 번호 - MRF89XA

제조업체부품명데이터시트상세설명
logo
Microchip Technology
MRF89XAM8A MICROCHIP-MRF89XAM8A Datasheet
682Kb / 34P
   868 MHz Ultra-Low Power
08/04/10
MRF89XAM8A-I MICROCHIP-MRF89XAM8A-I Datasheet
2Mb / 140P
   Ultra Low-Power, Integrated ISM Band Sub-GHz Transceiver
08/02/11
MRF89XAM8A-I/RM MICROCHIP-MRF89XAM8A-I/RM Datasheet
682Kb / 34P
   868 MHz Ultra-Low Power
08/04/10
MRF89XAM8AT-I/RM MICROCHIP-MRF89XAM8AT-I/RM Datasheet
682Kb / 34P
   868 MHz Ultra-Low Power
08/04/10
MRF89XAM9A MICROCHIP-MRF89XAM9A Datasheet
623Kb / 36P
   915 MHz Ultra Low-Power Sub-GHz Transceiver Module
11/29/12
More results

유사한 설명 - MRF89XA

제조업체부품명데이터시트상세설명
logo
Microchip Technology
MRF89XAM8A-I MICROCHIP-MRF89XAM8A-I Datasheet
2Mb / 140P
   Ultra Low-Power, Integrated ISM Band Sub-GHz Transceiver
08/02/11
logo
Freescale Semiconductor...
MC13191 FREESCALE-MC13191_07 Datasheet
340Kb / 24P
   2.4 GHz ISM Band Low Power Transceiver
MC13191 FREESCALE-MC13191 Datasheet
289Kb / 24P
   2.4 GHz ISM Band Low Power Transceiver
MC13191 FREESCALE-MC13191_08 Datasheet
373Kb / 24P
   2.4 GHz ISM Band Low Power Transceiver
logo
ATMEL Corporation
ATR2406 ATMEL-ATR2406_14 Datasheet
1Mb / 26P
   Low-IF 2.4-GHz ISM Transceiver
ATR2406 ATMEL-ATR2406_08 Datasheet
813Kb / 25P
   Low-IF 2.4-GHz ISM Transceiver
ATR2406 ATMEL-ATR2406 Datasheet
682Kb / 20P
   LOW IF .4 GHZ ISM TRANSCEIVER
ATR2406 ATMEL-ATR2406_06 Datasheet
850Kb / 25P
   Low-IF 2.4-GHz ISM Transceiver
logo
Semtech Corporation
SX1211 SEMTECH-SX1211_08 Datasheet
1Mb / 92P
   Ultra-Low Power Integrated UHF Transceiver
logo
List of Unclassifed Man...
RF63 ETC2-RF63 Datasheet
3Mb / 91P
   Ultra-Low Power Integrated UHF Transceiver
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100  ...More


데이터시트 다운로드

Go To PDF Page


링크 URL




개인정보취급방침
ALLDATASHEET.CO.KR
ALLDATASHEET 가 귀하에 도움이 되셨나요?  [ DONATE ] 

Alldatasheet는?   |   광고문의   |   운영자에게 연락하기   |   개인정보취급방침   |   링크교환   |   제조사별 검색
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com