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| 型號(hào)： | MFRC53001T |
| 廠商： | NXP Semiconductors N.V. |
| 元件分類： | 通信及網(wǎng)絡(luò) |
| 英文描述： | ISO-IEC 14443 A Reader IC |
| 封裝： | MFRC53001T/0FE<SOT287-1 (SO32)|<<http://www.nxp.com/packages/SOT287-1.html<1<week 5, 2005,;MFRC53001T/0FE<SOT287-1 (SO32)|<<http://www.nxp.com/packages/SOT287-1.html<1 |
| 文件頁(yè)數(shù)： | 79/115頁(yè) |
| 文件大?。?/td> | 2590K |
| 代理商： | MFRC53001T |
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MFRC530_33
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2010. All rights reserved.
Product data sheet
PUBLIC
Rev. 3.3 — 6 July 2010
057433
79 of 115
NXP Semiconductors
MFRC530
ISO/IEC 14443 A Reader IC
Table 138. Return values for bit-collision positions
Collision in bit
Parity bits are not counted in the CollPos register because bit-collisions in parity bit occur
after bit-collisions in the data bits. If a collision is detected in the SOF, a frame error is
flagged and no data is sent to the FIFO buffer. In this case, the receiver continues to
monitor the incoming signal. It generates the correct notifications to the microprocessor
when the end of the faulty input stream is detected. This helps the microprocessor to
determine when it is next allowed to send data to the card.
11.2.2.4
Receiving bit oriented frames
The receiver can manage byte streams with incomplete bytes which result in bit-oriented
frames. To support this, the following values may be used:
BitFraming register’s RxAlign[2:0] bits select a bit offset for the first incoming byte. For
example, if RxAlign[2:0] = 3, the first 5 bits received are forwarded to the FIFO buffer.
Further bits are packed into bytes and forwarded. After reception, RxAlign[2:0] is
automatically cleared. If RxAlign[2:0] = logic 0, all incoming bits are packed into one
byte.
RxLastBits[2:0] returns the number of bits valid in the last received byte. For example,
if RxLastBits[2:0] evaluates to 5 bits at the end of the received command, the 5 least
significant bits are valid. If the last byte is complete, RxLastBits[2:0] evaluates to zero.
RxLastBits[2:0] is only valid if a frame error is not indicated by the FramingErr flag. If
RxAlign[2:0] is not zero and ParityEn is active, the first parity bit is ignored and not
checked.
The first byte containing a single bit from the card is not sent to the microprocessor but
suppressed when If RxAlign[2:0] is set to 7 (see
Section 10.5.2.4 on page 53
).
Remark:
Collisions detected at CollPos register bit positions 6, 14, 22, 30 and 38 cannot
be resolved using RxAlign[2:0]. They must be resolved using the control software.
CollPos register value
(Decimal)
0
1
…
8
9
…
16
17
…
SOF
Least Significant Bit (LSB) of the Least Significant Byte (LSByte)
…
Most Significant Bit (MSB) of the LSByte
LSB of second byte
…
MSB of second byte
LSB of third byte
…
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MFRC53001T/0FE | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:ISO/IEC 14443 A Reader IC |
| MFRC53001T/0FE,112 | 功能描述:RFID應(yīng)答器 MIFARE HS READER RoHS:否 制造商:Murata 存儲(chǔ)容量:512 bit 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體: 封裝:Reel |
| MFRC53001T/0FE,518 | 功能描述:RFID應(yīng)答器 IC READER 13.56MHZ RoHS:否 制造商:Murata 存儲(chǔ)容量:512 bit 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體: 封裝:Reel |
| MFRC53001T/0FE112 | 制造商:NXP Semiconductors 功能描述:CNTCLESS RC 3.3V ISO14443-A/B |
| MFRC531 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Short Form Specification |
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