XR16C850CM EXAR [Exar Corporation], XR16C850CM Datasheet - Page 50

• Manufacturer Part Number: XR16C850CM
• Description: 2.97V TO 5.5V UART WITH 128-BYTE FIFO
• Manufacturer: EXAR [Exar Corporation]

XR16C850
2.97V TO 5.5V UART WITH 128-BYTE FIFO
F
F
IGURE
IGURE
RXRDY#
RX
INT
IOR#
(Reading data out
of RX FIFO)
RX
INT
RXRDY#
IOR#
(Reading data out
of RX FIFO)
27. R
28. R
ECEIVE
ECEIVE
First Byte is
Received in
RX FIFO
Start
Start
Bit
S
Bit
S
D0:D7
D0:D7
R
R
Stop
EADY
EADY
Bit
Trigger Level or RX Data
RX FIFO fills up to RX
Stop
Bit
S
S
& I
& I
T
Timeout
SSR
D0:D7
D0:D7
NTERRUPT
NTERRUPT
T
T
Trigger Level or RX Data
RX FIFO fills up to RX
T
T
D0:D7
D0:D7
T
IMING
IMING
T
SSI
SSI
Timeout
[FIFO M
[FIFO M
S
S
T
SSR
D0:D7
D0:D7
50
ODE
ODE
T
T
, DMA D
, DMA E
S
S
D0:D7
D0:D7
T
NABLED
ISABLED
T
S
S
T
T
RRI
D0:D7
RRI
D0:D7
]
]
T
T
RX FIFO drops
RX FIFO drops
Trigger Level
Trigger Level
below RX
S
below RX
S
D0:D7
D0:D7
Empties
T
Empties
T
RR
T
FIFO
RR
T
FIFO
xr
RXINTDMA#
RXFIFODMA
REV. 2.3.1