CLRC632 Datasheet, PDF (58/163 Pages) NXP Semiconductors – Multiple Protocol Contactless Reader IC

Philips Semiconductors
Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
CL RC632
5.2.6 PAGE 5: FIFO, TIMER AND IRQ- PIN CONFIGURATION
5.2.6.1 Page Register
Selects the register page. See 5.2.1.1 Page Register.
5.2.6.2 FIFOLevel Register
Defines the level for FIFO under- and overflow warning.
Name: FIFOLevel
Address: 0x29
Reset value:00001000, 0x08
7
6
5
4
3
2
1
0
0
0
WaterLevel
Access
r/w
r/w
r/w
r/w
r/w
r/w
r/w
r/w
Rights
Description of the bits
Bit
Symbol
7-6
00
5-0
WaterLevel
Function
These values shall not be changed
This register defines, the warning level of the CL RC632 for the µ-Processor for a
FIFO-buffer over- or underflow:
HiAlert is set to 1, if the remaining FIFO-buffer space is equal or less than
WaterLevel bytes in the FIFO-buffer.
LoAlert is set to 1, if equal or less than WaterLevel bytes are in the FIFO-buffer.
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