參數(shù)資料
型號: MFRC52301HN1
廠商: NXP Semiconductors N.V.
元件分類: 通信及網(wǎng)絡(luò)
英文描述: Contactless reader IC
封裝: MFRC52301HN1<SOT617-1 (HVQFN32)|<<http://www.nxp.com/packages/SOT617-1.html<1<Always Pb-free,;MFRC52301HN1<SOT617-1 (HVQFN32)|<<http://www.nxp.com/packages/SOT617-1.html&
文件頁數(shù): 54/98頁
文件大?。?/td> 1666K
代理商: MFRC52301HN1
MFRC523
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2011. All rights reserved.
Product data sheet
COMPANY PUBLIC
Rev. 3.7 — 8 November 2011
115237
54 of 98
NXP Semiconductors
MFRC523
Contactless reader IC
9.2.2.16
SerialSpeedReg register
Selects the speed of the serial UART interface.
Table 84.
Bit
Symbol
Access
Table 85.
Bit
7 to 5
4
EOFSOFWidth
1
if this bit is set to logic 1 and EOFSOFAdjust bit (AutoTestReg
register) is logic 0, the SOF and EOF will have the maximum
length defined in ISO/IEC 14443 B.
if this bit is set to logic 1 and the EOFSOFAadjust bit is logic 1:
then
SOF low = (11 ETU
8 cycles) / f
clk
SOF high = (2 ETU + 8 cycles) / f
clk
EOF low = (11 ETU
8 cycles) / f
clk
if this bit is cleared and EOFSOFAdjust bit is logic 0, the SOF
and EOF will have the minimum length defined in
ISO/IEC 14443 B.
if this bit is set to logic 0 and the EOFSOFAdjust bit is logic 1
results in an incorrect system behavior in respect to ISO
specification
SOF is suppressed
EOF is suppressed
defines EGT bit length
no bits
1 bit
2 bits
0
3
2
1 to 0
NoTxSOF
NoTxEOF
TxEGT
1
1
00
01
10
11
3 bits
Table 83.
Bit
TypeBReg register bit descriptions
…continued
Symbol
Value Description
SerialSpeedReg register (address 1Fh); reset value: EBh bit allocation
7
6
5
4
BR_T0[2:0]
R/W
3
2
1
0
BR_T1[4:0]
R/W
SerialSpeedReg register bit descriptions
Symbol
Description
BR_T0[2:0]
factor BR_T0 adjusts the transfer speed: for description, see
Section 8.3.3.2 on page 12
BR_T1[4:0]
factor BR_T1 adjusts the transfer speed: for description, see
Section 8.3.3.2 on page 12
4 to 0
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