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SPEAR1340 датащи(PDF) 187 Page - STMicroelectronics

номер детали SPEAR1340
подробное описание детали  Dual-core Cortex A9 HMI embedded MPU
PDF  200 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

SPEAR1340 датащи(HTML) 187 Page - STMicroelectronics

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SPEAr1340
Timing characteristics
Doc ID 023063 Rev 4
187/200
5.16.1
IrDA timing characteristics
Figure 48 and Figure 49 show timing waveforms based on 1 start bit, 5 data bits and 1 stop
bit.
fBAUDRATE = the programmed baud rate frequency
tUARTCLK = 1/fUARTCLK
Figure 48.
IrDA transmit timing waveform
Figure 49.
IrDA receive timing waveform
Table 103.
IrDA transmit timing characteristics
Symbol
Parameter
Min
Max
Unit
tTXBIT
IrDA transmit mode bit duration
1/fbaudrate -
tUARTCLK -1
1/fbaudrate +
tUARTCLK +1
ns
tTXPW
IrDA transmit mode pulse width, start bit
data bit value 0 (high pulse)
(3/16)*1/fbaudrate -
tUARTCLK -1
(3/16)*1/fbaudrate
+ tUARTCLK +1
Table 104.
IrDA receive timing characteristics
Symbol
Parameter
Min
Max
Unit
tRXBIT
IrDA receive mode bit duration
1/fbaudrate -
tUARTCLK -1
1/fbaudrate +
tUARTCLK +1
ns
tRXPW
IrDA receive mode pulse width, start
bit data bit value 0 (low pulse)
(3/16)*1/fbaudrate
0
0
0
0
0
1
1
Start bit
Stop bit
tTXBIT
tTXPW
UART_TXD
(SIROUT)
0
0
0
0
0
1
1
Start bit
Stop bit
UART_RXD
(SIRIN)
tRXPW
tRXBIT



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