XR16C2850CM48 EXAR [Exar Corporation], XR16C2850CM48 Datasheet - Page 35

• Manufacturer Part Number: XR16C2850CM48
• Description: 3.3V AND 5V DUART WITH 128-BYTE FIFO
• Manufacturer: EXAR [Exar Corporation]

XR16C2850
REV. 2.0.0
F
F
IGURE
IGURE
RXRDY#
RX
INT
INT*
TXRDY#
IOW#
IOR#
(Reading data
out of RHR)
TX
(Unloading)
(Loading data
into THR)
*INT is cleared when the ISR is read or when data is loaded into the THR.
18. R
19. T
IER[1]
enabled
RANSMIT
ECEIVE
T
WRI
R
T
Start
Start
Bit
R
WT
EADY
Bit
EADY
& I
ISR is read
D0:D7
& I
T
D0:D7
3.3V AND 5V DUART WITH 128-BYTE FIFO
SRT
NTERRUPT
NTERRUPT
T
WRI
Stop
Stop
Bit
Bit
T
RR
T
in RHR
1 Byte
Active
Ready
T
IMING
T
T
Data
T
IMING
SSR
SSR
WT
[N
[N
ISR is read
ON
T
ON
D0:D7
D0:D7
SRT
35
-FIFO M
-FIFO M
ODE
ODE
T
RR
in RHR
1 Byte
]
Active
Ready
T
T
Data
]
FOR
SSR
SSR
FOR
T
C
WRI
C
HANNELS
HANNELS
T
WT
D0:D7
A & B
A & B
ISR is read
D0:D7
T
SRT
TXNonFIFO
T
RR
T
in RHR
1 Byte
Active
Ready
SSR
T
Data
SSR
RXNFM