XR16M581 Exar Corporation, XR16M581 Datasheet - Page 46

• Manufacturer Part Number: XR16M581
• Description: 1.62V To 3.63V UART
• Manufacturer: Exar Corporation

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XR16M581
1.62V TO 3.63V UART WITH 16-BYTE FIFO AND VLIO INTERFACE
F
F
IGURE
IGURE
RXRDY#
INT*
TXRDY#
IOW#
RX
INT
IOR#
TX
(Unloading)
(Loading data
into THR)
(Reading data
out of RHR)
*INT is cleared when the ISR is read or when data is loaded into the THR.
19. R
20. T
IER[1]
enabled
RANSMIT
ECEIVE
T
WRI
R
T
Start
Start
Bit
WT
R
Bit
EADY
EADY
& I
ISR is read
D0:D7
T
& I
D0:D7
SRT
NTERRUPT
NTERRUPT
T
WRI
Stop
Stop
Bit
Bit
T
RR
T
in RHR
1 Byte
Active
Ready
IMING
T
T
T
Data
T
IMING
SSR
SSR
WT
[N
[N
ISR is read
ON
T
D0:D7
ON
D0:D7
SRT
46
-FIFO M
-FIFO M
ODE
ODE
T
RR
in RHR
1 Byte
]
Ready
Active
T
T
Data
]
SSR
SSR
T
WRI
T
WT
D0:D7
ISR is read
D0:D7
T
SRT
TXNonFIFO
T
RR
T
in RHR
1 Byte
Ready
Active
SSR
T
Data
SSR
RXNFM
REV. 1.0.0