SB16C1054PCI_Data Sheet_EN

SB16C1054PCI
PCI Target Interface Controller
with Quad-UART
JULY 2013 REV 1.04
48
Table 13–1: Internal Registers Map…continued
Address
A[2:0]
Register
Read/Write
Comments
Page 2 Registers
0h
None
—
—
3h
LCR : Line Control Register
Read/Write
—
4h
MCR : Modem Control Register
Read/Write
LCR[7] = 0, MCR[6] = 0,
LCR[7] = 1, LCR ≠ BFh,
LCR[7] = 0, MCR[6] = 1
5h
TCR : Transmit FIFO Count Register
Read-only
LCR[7] = 0, MCR[6] = 1
6h
RCR : Receive FIFO Count Register
Read-only
LCR[7] = 0, MCR[6] = 1
7h
FSR : Flow Control Status Register
Read-only
LCR[7] = 0, MCR[6] = 1
Page 3 Registers
0h
PSR : Page Select Register
Read/Write
LCR = BFh, PSR[0] = 0,
LCR = BFh, PSR[0] = 1
1h
ATR : Auto Toggle Control Register
Read/Write
LCR = BFh, PSR[0] = 0
2h
EFR : Enhanced Feature Register
Read/Write
LCR = BFh, PSR[0] = 0
3h
LCR : Line Control Register
Read/Write
—
4h
XON1b: Xon1 Character Register
Read/Write
LCR = BFh, PSR[0] = 0
5h
XON2 : Xon2 Character Register
Read/Write
LCR = BFh, PSR[0] = 0
6h
XOFF1b: Xoff1 Character Register
Read/Write
LCR = BFh, PSR[0] = 0
7h
XOFF2 : Xoff2 Character Register
Read/Write
LCR = BFh, PSR[0] = 0
Page 4 Registers
0h
PSR : Page Select Register
Read/Write
LCR = BFh, PSR[0] = 0,
LCR = BFh, PSR[0] = 1
1h
AFR : Additional Feature Register
Read/Write
LCR = BFh, PSR[0] = 1
2h
XRCR : Xoff Re-transmit Count Register
Read/Write
LCR = BFh, PSR[0] = 1
3h
LCR : Line Control Register
Read/Write
—
4h
TTR : Transmit FIFO Trigger Level Register
Read/Write
LCR = BFh, PSR[0] = 1
5h
RTR : Receive FIFO Trigger Level Register
Read/Write
LCR = BFh, PSR[0] = 1
6h
FUR : Flow Control Upper Threshold Register
Read/Write
LCR = BFh, PSR[0] = 1
7h
FLR : Flow Control Lower Threshold Register
Read/Write
LCR = BFh, PSR[0] = 1