參數(shù)資料
型號(hào): MFRC50001T
廠商: NXP Semiconductors N.V.
元件分類: 通信及網(wǎng)絡(luò)
英文描述: Highly integrated ISO-IEC 14443 A reader IC
封裝: MFRC50001T/0FE<SOT287-1 (SO32)|<<http://www.nxp.com/packages/SOT287-1.html<1<week 15, 2005,;
文件頁(yè)數(shù): 46/110頁(yè)
文件大?。?/td> 841K
代理商: MFRC50001T
MFRC500_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 — 15 March 2010
048033
46 of 110
NXP Semiconductors
MFRC500
Highly Integrated ISO/IEC 14443 A Reader IC
10.5.1.5
FIFOLength register
Number of bytes in the FIFO buffer.
Table 41.
Bit
Symbol
Access
Table 42.
Bit
7
6 to 0 FIFOLength[6:0]
10.5.1.6
SecondaryStatus register
Various secondary status flags.
Table 43.
Table 44.
Bit
7
FIFOLength register (address: 04h) reset value: 0000 0000b, 00h bit allocation
7
6
5
0
R
4
3
2
1
0
FIFOLength[6:0]
R
FIFOLength bit descriptions
Symbol
0
Description
reserved
gives the number of bytes stored in the FIFO buffer. Writing
increments the FIFOLength register value while reading decrements
the FIFOLength register value
SecondaryStatus register (address: 05h) reset value: 01100 000b, 60h bit
allocation
7
6
5
TRunning
E2Ready
CRCReady
R
R
R
Bit
Symbol
Access
4
3
2
1
0
00
R
RxLastBits[2:0]
R
SecondaryStatus register bit descriptions
Symbol
Value
TRunning
1
Description
the timer unit is running and the counter decrements the
TimerValue register on the next timer clock cycle
the timer unit is not running
EEPROM programming is finished
EEPROM programming is ongoing
CRC calculation is finished
CRC calculation is ongoing
reserved
shows the number of valid bits in the last received byte. If zero,
the whole byte is valid
0
1
0
1
0
-
-
6
E2Ready
5
CRCReady
4 to 3 00
2 to 0 RxLastBits[2:0]
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