xr16c2550ip Exar Corporation, xr16c2550ip Datasheet - Page 32

• Manufacturer Part Number: xr16c2550ip
• Description: Dual Uart With 16-byte Transmit And Receive Fifos
• Manufacturer: Exar Corporation

XR16C2550
2.97V TO 5.5V DUART WITH 16-BYTE FIFO
F
IGURE
(Unloading)
(Loading data
*INT is cleared when the ISR is read or when there is at least one character in the FIFO.
22. T
into FIFO)
TX
INT*
TXRDY#
IOW#
RANSMIT
TX FIFO
Empty
enabled
IER[1]
R
EADY
Start
& I
Bit
ISR is read
S
D0:D7
NTERRUPT
T
WRI
Stop
Bit
T
longer empty
TX FIFO no
T
S
IMING
D0:D7
[FIFO M
T
S
TX FIFO
32
Full
D0:D7
ODE
T
, DMA M
T
SRT
T
S
D0:D7
ODE
T
WT
T
E
S
NABLED
D0:D7
T
]
empty location
FOR
At least 1
in FIFO
T
SI
C
S
xr
HANNELS
Last Data Byte
Transmitted
D0:D7
TXDMA
TX FIFO
Empty
T
REV. 1.0.1
A & B