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CLRC663 Datasheet(PDF) 64 Page - NXP Semiconductors

Part # CLRC663
Description  Contactless reader IC
Download  132 Pages
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Manufacturer  NXP [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo NXP - NXP Semiconductors

CLRC663 Datasheet(HTML) 64 Page - NXP Semiconductors

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CLRC663
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© NXP B.V. 2012. All rights reserved.
Product data sheet
COMPANY PUBLIC
Rev. 3.3 — 3 April 2012
171133
64 of 132
NXP Semiconductors
CLRC663
Contactless reader IC
9.4 FIFO configuration register
9.4.1 FIFOControl
FIFOControl defines the characteristics of the FIFO
9.4.2 WaterLevel
Defines the level for FIFO under- and overflow warning levels.This register is extended by
1 bit in FIFOControl in case the 512-bit FIFO mode is activated by setting bit
FIFOControl.FIFOSize.
Table 51.
FIFOControl register (address 02h);
Bit
7
6
5
4
3
2
1
0
Symbol
FIFOSize
HiAlert
LoAlert
FIFOFlush
RFU
WaterLevel
FIFOLength
Access
rights
r/w
r
r
w
-
r/w
r
Table 52.
FIFOControl bits
Bit
Symbol
Description
7
FIFOSize
Set to logic 1, FIFO size is 255 bytes;
Set to logic 0, FIFO size is 512 bytes.
It is recommended to change the FIFO size only, when the FIFO
content had been cleared.
6
HiAlert
Set to logic 1, when the number of bytes stored in the FIFO buffer
fulfils the following equation:
HiAlert = (FIFOSize - FIFOLength) <= WaterLevel
5
LoAlert
Set to logic 1, when the number of bytes stored in the FIFO buffer
fulfils the following conditions:
LoAlert =1 if FIFOLength <= WaterLevel
4
FIFOFlush
Set to logic 1 empties the FIFO buffer. Reading this bit will always
return 0
3RFU
-
2
WaterLevel
Defines the bit 8 (MSB) for the waterlevel (extension of WaterLevel).
This bit is only evaluated in the 512-bit FIFO mode. Bits 7..0 are
defined in WaterLevel.
1 to 0
FIFOLength
Defines the bit9 (MSB) and bit8 for the FIFO length (extension of
FIFOLength). These two bits are only evaluated in the 512-bit FIFO
mode, The bits 7..0 are defined in FIFOLength.
Table 53.
WaterLevel register (address 03h);
Bit
7
6
5
4
3
2
1
0
Symbol
WaterLevel
Access
rights
r/w


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