XR16L788 Exar Corporation, XR16L788 Datasheet - Page 19

• Manufacturer Part Number: XR16L788
• Description: High-performance 3.3V Octal Uart
• Manufacturer: Exar Corporation

XR16L788 OCTAL UART
REV. 1.1.4
T
ABLE
A
0 0 0 0
0 0 0 0
0 0 0 0
0 0 0 1
0 0 0 1
0 0 1 0
0 0 1 0
0 0 1 1
0 1 0 0
0 1 0 1
0 1 1 0
0 1 1 1
1 0 0 0
1 0 0 1
1 0 1 0
1 0 1 0
1 0 1 1
1 0 1 1
1 1 0 0
1 1 0 0
1 1 0 1
1 1 1 0
1 1 1 1
A3-A0
DDRESS
8: UART CHANNEL CONFIGURATION REGISTERS DESCRIPTION.
XCHAR
RFCNT
RFTRG
TFCNT
TFTRG
XOFF1
XOFF2
XON1
XON2
FCTR
N
MCR
MSR
MSR
RHR
THR
DLM
FCR
SPR
LCR
LSR
EFR
R
DLL
IER
ISR
AME
EG
R
W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
EAD
RITE
W
W
W
W
W
W
W
W
W
R
R
R
R
R
R
/
CTS/DSR#
CTS/DSR
Int. Enable
Prescaler
RX FIFO
RX FIFO
Trigger
Enable
Divisor
Enable
E
RS485
Enable
FIFOs
DLY-3
Table
B
BRG
TRG
Bit-7
Bit-7
Bit-7
Bit-7
Bit-7
Auto
Bit-7
Bit-7
Bit-7
Bit-7
Bit-7
Bit-7
Bit-7
Bit-7
RROR
Bit-1
CD
IT
0/
0/
0/
0/
0/
-7
RTS/DTR#
Int. Enable
RTS/DTR
RX FIFO
Enable
Trigger
Set TX
Enable
RS485
Enable
FIFOs
Empty
DLY-2
Break
B
Table
Bit-6
Bit-6
Bit-6
Bit-6
TSR
Bit-6
TRG
Auto
Bit-6
Bit-6
Bit-6
Bit-6
Bit-6
Bit-6
Bit-6
Bit-6
Bit-0
IR
RI
IT
0/
0/
0/
0/
0/
-6
Set Parity
Int. Enable
Flow Cntl
TX FIFO
Xon/Xoff/
Sp. Char.
XonAny
Special
Trigger
Enable
RS485
RS485
Empty
DLY-1
Select
Delta-
B
Bit-5
Bit-5
Bit-5
Bit-5
THR
DSR
Bit-5
Auto
Char
Bit-5
Bit-5
Bit-5
Bit-5
Bit-5
Bit-5
Bit-5
Bit-5
IT
0/
0/
0/
0/
0/
-5
19
RX Break RX Fram-
Xoff/spe-
TX FIFO
RX Input
cial char
Lopback
Invert IR
Internal
FCR[5:4],
MCR[7:5]
IER [7:4],
ISR [5:4],
MSR[7:4]
Trigger
Enable
RS485
DLY-0
Parity
Enable
B
Even
Bit-4
Bit-4
Bit-4
Bit-4
CTS
Bit-4
Bit-4
Bit-4
Bit-4
Bit-4
Bit-4
Bit-4
Bit-4
Bit-4
IT
0/
0/
0/
0
-4
Status Int.
Reserved Reserved Reserved Reserved
RTS/DTR
Hyst Bit-3
Flow Cntl
ing Error
Software
Modem
Enable
Source
Enable
Parity
Mode
OP2
B
Delta
DMA
Bit-3
Bit-3
Bit-3
Bit-3
Bit-3
CD#
Bit-3
Bit-3
Bit-3
Bit-3
Bit-3
Bit-3
Bit-3
Bit-3
Bit-3
Bit-3
INT
IT
-3
2
Status Int.
RTS/DTR
RTS/DTR
Hyst Bit-2
RX Parity
Flow Cntl
Stop Bits
Software
TX FIFO
Flow Sel
RX Line
Enable
Source
OP1
Reset
B
Delta
Error
Bit-2
Bit-2
Bit-2
Bit-2
Bit-2
Bit-2
Bit-2
Bit-2
Bit-2
Bit-2
Bit-2
Bit-2
Bit-2
Bit-2
Bit-2
INT
RI#
IT
-2
S
2
HADED BITS ARE ENABLED BY
/
TX Empty
Hyst Bit-1
RTS# Pin
RTS/DTR
RX Over-
Flow Cntl
RX FIFO
Software
Xon Det.
Indicator
Source
Control
Enable
Length
Reset
DSR#
Word
Delta
B
Bit-1
Bit-1
Bit-1
Bit-1
Bit-1
Bit-1
Bit-1
Bit-1
Bit-1
Bit-1
Bit-1
Bit-1
Bit-1
Bit-1
Bit-1
Bit-1
INT
run
Int.
IT
-1
DTR# Pin
RTS/DTR
Hyst Bit-0
Flow Cntl
Software
Xoff Det.
RX Data
RX Data
Indicator
Control
Enable
Source
Enable
Length
FIFOs
Ready
CTS#
B
Word
Delta
Bit-0
Bit-0
Bit-0
Bit-0
Bit-0
Bit-0
Bit-0
Bit-0
Bit-0
Bit-0
Bit-0
Bit-0
Bit-0
Bit-0
Bit-0
Bit-0
INT
Int.
IT
-0
EFR B
User Data
C
LCR[7]=0
LCR[7]=1
after read
LCR[7]=0
LCR[7]=1
Self-clear
OMMENT
IT
-4.