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CLRC663 Datasheet(PDF) 22 Page - NXP Semiconductors

Part No. CLRC663
Description  Contactless reader IC
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Maker  NXP [NXP Semiconductors]
Homepage  http://www.nxp.com
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CLRC663 Datasheet(HTML) 22 Page - NXP Semiconductors

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CLRC663
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2012. All rights reserved.
Product data sheet
COMPANY PUBLIC
Rev. 3.3 — 3 April 2012
171133
22 of 132
NXP Semiconductors
CLRC663
Contactless reader IC
The selectable transfer speeds as shown are calculated according to the following
formulas:
if BR_T0 = 0: transfer speed = 27.12 MHz / (BR_T1 + 1)
if BR_T0 > 0: transfer speed = 27.12 MHz / (BR_T1 + 33)/2(BR_T0  1)
Remark: Transfer speeds above 1228.8 KBits/s are not supported.
8.4.3.2
Framing
Remark: For data and address bytes the LSB bit has to be sent first. No parity bit is used
during transmission.
Read data: To read out data using the UART interface the flow described below has to be
used. The first send byte defines both the mode itself and the address.The Trigger on pin
IF3 has to be set, otherwise no read of data is possible.
38.4
AB
0.32
57.6
9A
0.25
115.2
7A
0.25
128
74
0.06
230.4
5A
0.25
460.8
3A
0.25
921.6
1C
1.45
1228.8
15
0.32
Table 20.
Selectable transfer speeds
Transfer speed (kbit/s)
Serial SpeedReg
Transfer speed accuracy (%)
(Hex.)
Table 21.
UART framing
Bit
Length
Value
Start bit (Sa)
1 bit
0
Data bits
8 bit
Data
Stop bit (So)
1 bit
1
Table 22.
Byte Order to Read Data
Mode
byte 0
byte 1
RX
address
-
TX
-
data 0


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