xr16l570il32 Exar Corporation, xr16l570il32 Datasheet - Page 27
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xr16l570il32
Manufacturer Part Number
xr16l570il32
Description
Smallest 1.62v To 5.5v Uart With 16-byte Fifo And Powersave
Manufacturer
Exar Corporation
Datasheet
1.XR16L570IL32.pdf
(47 pages)
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REV. 1.0.1
LCR[2]: TX and RX Stop-bit Length Select
The length of stop bit is specified by this bit in conjunction with the programmed word length.
LCR[3]: TX and RX Parity Select
Parity or no parity can be selected via this bit. The parity bit is a simple way used in communications for data
integrity check. See
•
•
LCR[4]: TX and RX Parity Select
If the parity bit is enabled with LCR bit-3 set to a logic 1, LCR BIT-4 selects the even or odd parity format.
•
•
LCR[5]: TX and RX Parity Select
If the parity bit is enabled, LCR BIT-5 selects the forced parity format.
•
•
•
Logic 0 = No parity.
Logic 1 = A parity bit is generated during the transmission while the receiver checks for parity error of the
data character received.
Logic 0 = ODD Parity is generated by forcing an odd number of logic 1’s in the transmitted character. The
receiver must be programmed to check the same format (default).
Logic 1 = EVEN Parity is generated by forcing an even number of logic 1’s in the transmitted character. The
receiver must be programmed to check the same format.
LCR BIT-5 = logic 0, parity is not forced (default).
LCR BIT-5 = logic 1 and LCR BIT-4 = logic 0, parity bit is forced to a logical 1 for the transmit and receive
data.
LCR BIT-5 = logic 1 and LCR BIT-4 = logic 1, parity bit is forced to a logical 0 for the transmit and receive
data.
LCR B
Table 9
X
0
0
1
1
IT
-5 LCR B
for parity selection summary below.
BIT-2
0
1
1
X
0
1
0
1
IT
-4 LCR B
SMALLEST 1.62V TO 5.5V UART WITH 16-BYTE FIFO AND POWERSAVE
T
ABLE
LENGTH
5,6,7,8
W
6,7,8
0
1
1
1
1
ORD
5
IT
9: P
-3
ARITY SELECTION
27
Forced parity to space, “0”
Force parity to mark, “1”
S
TOP BIT LENGTH
(B
P
1 (default)
ARITY SELECTION
IT TIME
1-1/2
Even parity
Odd parity
No parity
2
(
S
))
XR16L570