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CLRC663 Datasheet(PDF) 97 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) 97 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
97 of 132
NXP Semiconductors
CLRC663
Contactless reader IC
9.13.2 LPO_Trimm
Table 166. SerialSpeed register (address3Bh); reset value: 7Ah
Bit
7
6
5
4
3
2
1
0
Symbol
BR_T0
BR_T1
Access
rights
r/w
r/w
Table 167. SerialSpeed bits
Bit
Symbol Description
7 to 5 BR_T0
BR_T0 = 0: transfer speed = 27.12 MHz / (BR_T1 + 1)
BR_T0 > 0: transfer speed = 27.12 MHz / (BR_T1 + 33) / 2^(BR_T0
 1)
4 to 0 BR_T1
BR_T0 = 0: transfer speed = 27.12 MHz / (BR_T1 + 1)
BR_T0 > 0: transfer speed = 27.12 MHz / (BR_T1 + 33) / 2^(BR_T0
 1)
Table 168. RS232 speed settings
Transfer speed (kbit/s)
SerialSpeed register content (Hex.)
7,2
FA
9,6
EB
14,4
DA
19,2
CB
38,4
AB
57,6
9A
115,2
7A
128,0
74
230,4
5A
460,8
3A
921,6
1C
1228,8
15
Table 169. LPO_Trim register (address 3Ch)
Bit
7
6
5
4
3
2
1
0
Symbol
lpo_trimm
Access
rights
r/w
Table 170. LPO_Trim bits
Bit
Symbol
Description
7 to 0
lpo_trimm
Trimm value. Refer to Section 8.8.3 “Low-Power Oscillator (LPO)”
Note: If the trimm value is increased, the frequency of the oscillator
decreases


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