xr16c2852ij Exar Corporation, xr16c2852ij Datasheet - Page 45

• Manufacturer Part Number: xr16c2852ij
• Description: 2.97v To 5.5v Dual Uart With 128-byte Fifos
• Manufacturer: Exar Corporation

xr
REV. 2.1.1
F
F
IGURE
IGURE
RX
INT
RXRDY#
IOR#
(Reading data out
of RX FIFO)
RX
INT
RXRDY#
IOR#
(Reading data out
of RX FIFO)
22. R
23. R
ECEIVE
First Byte is
Received in
ECEIVE
RX FIFO
Start
Start
Bit
Bit
S
S
D0:D7
D0:D7
R
R
Stop
Bit
EADY
EADY
Trigger Level or RX Data
RX FIFO fills up to RX
Stop
Bit
S
S
& I
T
& I
SSR
D0:D7
Timeout
D0:D7
NTERRUPT
NTERRUPT
T
T
Trigger Level or RX Data
RX FIFO fills up to RX
T
D0:D7
T
D0:D7
T
IMING
IMING
T
SSI
Timeout
SSI
[FIFO M
[FIFO M
S
S
T
D0:D7
SSR
D0:D7
45
2.97V TO 5.5V DUAL UART WITH 128-BYTE FIFOS
ODE
ODE
T
T
, DMA D
, DMA E
S
S
D0:D7
D0:D7
T
NABLED
ISABLED
T
S
T
S
RRI
D0:D7
T
RRI
D0:D7
]
]
FOR
FOR
T
RX FIFO drops
T
Trigger Level
RX FIFO drops
Trigger Level
below RX
S
C
C
below RX
S
HANNELS
HANNELS
D0:D7
D0:D7
Empties
T
FIFO
RR
T
Empties
T
T
FIFO
RR
RXINTDMA#
A & B
A & B
RXFIFODMA
XR16C2852