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SB16C1054PCI_Data Sheet_EN

ManualsBrandsSystemBase ManualsElectronic ComponentsPCI to Quad UART with 256 Byte FIFO Bridge Controller - 60pcs Bundle
51525354555657585960
SB16C1054PCI
PCI Target Interface Controller
with Quad-UART
JULY 2013 REV 1.04
60
13.15 Page Select Register (PSR, Page 3)
If BFh is written in LCR, registers in Page3 and Page4 can be accessed. PSR is used
to determine which page to use. Table 13–11 shows PSR bit settings.
Table 13–11: Page Select Register Description
Bit
Symbol
Description
7:1
PSR[7:1]
Access Key:
When writing data on PSR to change page, Access Key must be
correspondent. If the value of PSR[7:1] is 1010_010b, data is
written on PSR[0] and page can be selected. If PSR[7:1] is read, it
reads 0000_000b which is irrespective of Access Key.
0
PSR[0]
Page Select:
0b: Page 3 is selected (default).
1b: Page 4 is selected.