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參數資料
| 型號： | IS83C154TXXX-25D |
| 廠商： | ATMEL CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, MROM, 25 MHz, MICROCONTROLLER, PQCC44 |
| 封裝： | PLASTIC, LCC-44 |
| 文件頁數： | 39/101頁 |
| 文件大?。?/td> | 3398K |
| 代理商： | IS83C154TXXX-25D |
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65
8168C-MCU Wireless-02/10
AT86RF212
Register 0x2E (CSMA_SEED_1):
The CSMA_SEED_1 register contains a part of the CSMA seed for the CSMA-CA
algorithm, as well as control bits for the Frame Filter and RX_AACK transaction.
Table 5-27. Register 0x2E (CSMA_SEED_1)
Bit
7
6
5
4
Name
AACK_FVN_MODE
AACK_SET_PD
AACK_DIS_ACK
Read/Write
R/W
Reset Value
0
1
0
Bit
3
2
1
0
Name
AACK_I_AM_COORD
CSMA_SEED[10]
CSMA_SEED[9]
CSMA_SEED[8]
Read/Write
R/W
Reset Value
0
1
0
Bit 7:6 – AACK_FVN_MODE
The frame control field of the MAC header (MHR) contains a frame version subfield.
The setting of AACK_FVN_MODE specifies the frame filtering and acknowledgement
behavior of the AT86RF212. According to the content of these register bits, the radio
transceiver passes frames with a specific frame version number, number group, or
independent of the frame version number.
Thus, the register bit AACK_FVN_MODE defines the maximum acceptable frame
version. Received frames with a higher frame version number than configured do not
pass the Frame Filter and thus are not acknowledged.
Table 5-28. Frame Version Subfield dependent Frame Acknowledgment
Register Bits
Value
Description
0
Acknowledge frames with version number 0
1
Acknowledge frames with version number 0 or 1
2
Acknowledge frames with version number 0 or 1 or 2
AACK_FVN_MODE
3
Acknowledge independent of frame version number
Note that the frame version field of the acknowledgment frame is set to 0x00 according
to IEEE 802.15.4-2006, section 7.2.2.3.1 “Acknowledgment frame MHR fields”.
Bit 5 – AACK_SET_PD
The content of AACK_SET_PD bit is copied into the “Frame Pending” subfield of the
acknowledgment frame if the ACK is the answer to a data request MAC command
frame.
In addition, if register bits AACK_FVN_MODE (register 0x2E, CSMA_SEED_1) are
configured to accept frames with a frame version other than 0 or 1, the content of
register bit AACK_SET_PD is also copied into the “Frame Pending” subfield of the
acknowledgment frame for any MAC command frame with a frame version of 2 or 3 that
have the security enabled subfield set to 1. This is done in the assumption that a future
version of the standard [2] might change the length or structure of the auxiliary security
header, so it would not possible to safely detect whether the MAC command frame is
actually a data request command or not.
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相關代理商/技術參數 |
參數描述 |
|---|---|
| IS83D | 制造商:IDEC CORPORATION 功能描述:SENS.IND. 2W/F 24-230VAC NO |
| IS83DK | 制造商:IDEC CORPORATION 功能描述:SENS.IND. 2W/F 24-230VAC NO |
| IS83DL | 制造商:IDEC CORPORATION 功能描述:SENS.IND. 2W/F 24-230VAC NO |
| IS83K | 制造商:IDEC CORPORATION 功能描述:SENS.IND. 2W/F 24-230VAC NO |
| IS83L | 制造商:IDEC CORPORATION 功能描述:SENS.IND. 2W/F 24-230VAC NO |
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