ST16C2552CJ44 EXAR [Exar Corporation], ST16C2552CJ44 Datasheet - Page 31

• Manufacturer Part Number: ST16C2552CJ44
• Description: 2.97V TO 5.5V DUAL UART WITH 16-BYTE FIFO
• Manufacturer: EXAR [Exar Corporation]

REV. 4.2.1
F
F
IGURE
IGURE
RXRDY#
RX
INT
IOR#
(Reading data out
of RX FIFO)
RX
INT
RXRDY#
IOR#
(Reading data out
of RX FIFO)
18. R
19. R
ECEIVE
ECEIVE
First Byte is
Received in
RX FIFO
Start
Start
Bit
Bit
S
S
D0:D7
D0:D7
R
R
Stop
EADY
Bit
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
T
D0:D7
D0:D7
T
IMING
IMING
T
SSI
Timeout
SSI
[FIFO M
[FIFO M
S
S
T
D0:D7
SSR
D0:D7
31
ODE
ODE
T
2.97V TO 5.5V DUAL UART WITH 16-BYTE FIFO
T
, DMA D
, DMA E
S
S
D0:D7
D0:D7
T
NABLED
ISABLED
T
S
S
T
RRI
T
D0:D7
RRI
D0:D7
]
]
FOR
FOR
T
T
RX FIFO drops
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
RR
T
FIFO
ST16C2552
RXINTDMA#
A & B
A & B
RXFIFODMA