参数资料
型号: MCIMX534AVV8C
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 32-BIT, 800 MHz, RISC PROCESSOR, PBGA529
封装: 19 X 19 MM, 0.80 MM PITCH, ROHS COMPLIANT, PLASTIC, TEPBGA-529
文件页数: 42/178页
文件大小: 4711K
代理商: MCIMX534AVV8C
i.MX53xA Automotive and Infotainment Applications Processors, Rev. 3
136
Freescale Semiconductor
Electrical Characteristics
Figure 87. UART RS-232 Serial Mode Transmit Timing Diagram
4.7.18.2.2
UART Receiver
Figure 88 depicts the RS-232 serial mode receive timing with 8 data bit/1 stop bit format. Table 90 lists
serial mode receive timing characteristics.
Figure 88. UART RS-232 Serial Mode Receive Timing Diagram
4.7.18.3
UART IrDA Mode Timing
The following subsections give the UART transmit and receive timings in IrDA mode.
4.7.18.3.3
UART IrDA Mode Transmitter
Figure 89 depicts the UART IrDA mode transmit timing, with 8 data bit/1 stop bit format. Table 91 lists
the transmit timing characteristics.
Table 89. RS-232 Serial Mode Transmit Timing Parameters
ID
Parameter
Symbol
Min
Max
Units
UA1
Transmit Bit Time
tTbit
1/Fbaud_rate
1
Tref_clk
2
1 F
baud_rate: Baud rate frequency. The maximum baud rate the UART can support is (ipg_perclk frequency)/16.
2 T
ref_clk: The period of UART reference clock ref_clk (ipg_perclk after RFDIV divider).
1/Fbaud_rate +
Tref_clk
Table 90. RS-232 Serial Mode Receive Timing Parameters
ID
Parameter
Symbol
Min
Max
Units
UA2
Receive Bit Time1
1 The UART receiver can tolerate 1/(16*F
baud_rate) tolerance in each bit. But accumulation tolerance in one frame must not
exceed 3/(16*Fbaud_rate).
tRbit
1/Fbaud_rate
2
1/(16*Fbaud_rate)
2 F
baud_rate: Baud rate frequency. The maximum baud rate the UART can support is (ipg_perclk frequency)/16.
1/Fbaud_rate +
1/(16*Fbaud_rate)
Bit 1
Bit 2
Bit 0
Bit 4
Bit 5
Bit 6
Bit 7
TXD
(output)
Bit 3
Start
Bit
STOP
BIT
Next
Start
Bit
Possible
Parity
Bit
Par Bit
UA1
Bit 1
Bit 2
Bit 0
Bit 4
Bit 5
Bit 6
Bit 7
RXD
(input)
Bit 3
Start
Bit
STOP
BIT
Next
Start
Bit
Possible
Parity
Bit
Par Bit
UA2
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