XR16L570 Exar Corporation, XR16L570 Datasheet - Page 40

• Manufacturer Part Number: XR16L570
• Description: SMALLEST 1.62V TO 5.5V UART
• Manufacturer: Exar Corporation

XR16L570
SMALLEST 1.62V TO 5.5V UART WITH 16-BYTE FIFO AND POWERSAVE
F
F
IGURE
IGURE
INT*
IOW#
TX
(Unloading)
(Loading data
into THR)
RX
INT
IOR#
(Reading data
out of RHR)
18. R
19. T
IER[1]
enabled
T
WRI
RANSMIT
ECEIVE
*INT is cleared when the ISR is read or when data is loaded into the THR.
Start
Start
R
Bit
Bit
R
EADY
EADY
ISR is read
I
T
D0:D7
NTERRUPT
D0:D7
I
SRT
NTERRUPT
T
WRI
Stop
Stop
T
Bit
Bit
T
IMING
T
RR
in RHR
IMING
1 Byte
T
SSR
[N
[N
ON
ON
-FIFO M
ISR is read
-FIFO M
T
D0:D7
D0:D7
40
SRT
ODE
ODE
]
T
]
RR
in RHR
1 Byte
T
SSR
T
WRI
D0:D7
ISR is read
D0:D7
T
xr
SRT
T
RR
in RHR
1 Byte
T
SSR
REV. 1.0.0
TXNonFIFO
RXNFM