SLRC400 Datasheet, PDF (48/130 Pages) NXP Semiconductors – I·CODE Reader IC

Philips Semiconductors
I•CODE Reader IC
Product Specification Rev. 2.0 November 2001
SL RC400
5.2.5.8 PreSet27 Register
Name: PreSet27
Address: 0x27
7
6
5
4
0
0
0
0
Access
r/w
r/w
r/w
r/w
Rights
Note: These values shall not be changed !
Reset value: 00000000, 0x00
3
2
1
0
0
0
0
0
r/w
r/w
r/w
r/w
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:00111110, 0x3E
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 SL RC400 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,.
48
Preliminary