XR16L580_07 EXAR [Exar Corporation], XR16L580_07 Datasheet - Page 15
XR16L580_07
Manufacturer Part Number
XR16L580_07
Description
SMALLEST 2.25V TO 5.5V UART WITH 16-BYTE FIFO AND POWERSAVE
Manufacturer
EXAR [Exar Corporation]
Datasheet
1.XR16L580_07.pdf
(52 pages)
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REV. 1.4.1
F
F
IGURE
IGURE
Receive Data
Byte and Errors
10. R
11. R
16 bytes by 11-bit
16X Clock
ECEIVER
ECEIVER
wide
FIFO
16X Clock
and Errors
Data Byte
Receive
O
O
PERATION IN
PERATION IN NON
Receive Data Shift
Register (RSR)
SMALLEST 2.25V TO 5.5V UART WITH 16-BYTE FIFO AND POWERSAVE
Data FIFO
Receive
LSR bits
FIFO
Receive
Tags in
Error
Data
4:2
-FIFO M
AND
Receive Data Shift
Register (RSR)
Holding Register
A
Receive Data
UTO
Validation
FIFO Trigger=8
ODE
Data falls to
Data Bit
Data fills to
(RHR)
RX FIFO trigger level selected at 8 bytes
Example
RTS F
14
4
15
:
LOW
RTS# re-asserts when data falls below the flow
control trigger level to restart remote transmitter.
Enable by EFR bit-6=1, MCR bit-1.
RTS# de-asserts when data fills above the flow
control trigger level to suspend remote transmitter.
Enable by EFR bit-6=1, MCR bit-1.
Validation
Data Bit
RHR Interrupt (ISR bit-2) programmed for
desired FIFO trigger level.
FIFO is Enabled by FCR bit-0=1
C
ONTROL
RHR Interrupt (ISR bit-2)
M
Receive Data Characters
ODE
Receive Data Characters
RXFIFO1
XR16L580
RXFIFO1
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