MCIMX35 Motorola Semiconductor Products, MCIMX35 Datasheet - Page 115

• Manufacturer Part Number: MCIMX35
• Manufacturer: Motorola Semiconductor Products

4.7.23.1.12 UART Receiver
Figure 88
serial mode receive timing characteristics.
4.7.23.2
The following subsections give the UART transmit and receive timings in IrDA mode.
4.7.23.2.13 UART IrDA Mode Transmitter
Figure 89
the transmit timing characteristics.
Freescale Semiconductor
1
2
(output)
Note: The UART receiver can tolerate 1/(16*F
not exceed 3/(16*F
F
TXD
baud_rate
(input)
UA2
MCIMX35 (i.MX35) Multimedia Applications Processor for Automotive Products Advance Information, Rev. 0
RXD
ID
depicts the RS-232 serial mode receive timing, with 8 data bit/1 stop bit format.
depicts the UART IrDA mode transmit timing, with 8 data bit/1 stop bit format.
: Baud rate frequency. The maximum baud rate the UART can support is ( ipg_perclk frequency)/16.
UART IrDA Mode Timing
Start
Bit
Start
UA2
Bit
UA3
baud_rate
Figure 88. UART RS-232 Serial Mode Receive Timing Diagram
Bit 0
Receive Bit Time
Bit 0
Table 76. RS-232 Serial Mode Receive Timing Parameters
).
Parameter
Figure 89. UART IrDA Mode Transmit Timing Diagram
Bit 1
Bit 1
Preliminary—Subject to Change Without Notice
Bit 2
1
Bit 2
baud_rate
UA3
UA2
Bit 3
) tolerance in each bit. But accumulation tolerance in one frame must
Bit 3
Bit 4
Symbol
t
Rbit
Bit 4
Bit 5
1/(16*F
1/F
Bit 6
UA4
baud_rate
Bit 5
Min.
baud_rate
Bit 7
2
-
Bit 6
)
Possible
Par Bit
Parity
UA2
1/(16*F
Bit
1/F
Bit 7
baud_rate
Max.
STOP
UA2
baud_rate
BIT
UA3
Possible
+
Parity
Table 77
Table 76
)
Bit
Next
Start
Bit
UA3
Units
-
STOP
BIT
lists
lists
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