xr16m2550 Exar Corporation, xr16m2550 Datasheet - Page 41

• Manufacturer Part Number: xr16m2550
• Description: High Performance Low Voltage Duart With 16-byte Fifo
• Manufacturer: Exar Corporation

REV. 1.0.2
F
F
IGURE
IGURE
RX
INT
RXRDY#
IOR#
(Reading data out
of RX FIFO)
RXRDY#
RX
INT
IOR#
(Reading data out
of RX FIFO)
19. R
20. R
ECEIVE
ECEIVE
First Byte is
Received in
RX FIFO
Start
Bit
Start
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
SSR
Timeout
D0:D7
D0:D7
NTERRUPT
NTERRUPT
T
T
HIGH PERFORMANCE LOW VOLTAGE DUART WITH 16-BYTE FIFO
Trigger Level or RX Data
RX FIFO fills up to RX
T
T
D0:D7
D0:D7
T
IMING
T
IMING
SSI
SSI
Timeout
[FIFO M
[FIFO M
S
S
T
SSR
D0:D7
D0:D7
41
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
]
]
FOR
FOR
T
T
RX FIFO drops
RX FIFO drops
Trigger Level
Trigger Level
below RX
C
below RX
S
C
S
HANNELS
HANNELS
D0:D7
D0:D7
Empties
T
Empties
T
RR
T
FIFO
T
FIFO
RR
XR16M2550
RXINTDMA#
A & B
RXFIFODMA
A & B