MCIMX53-START Freescale Semiconductor, MCIMX53-START Datasheet - Page 137

• Manufacturer Part Number: MCIMX53-START
• Description: KIT DEVELOPMENT I.MX53
• Manufacturer: Freescale Semiconductor
• Series: i.MX53r
• Type: MCUr

Specifications of MCIMX53-START

• Contents: Board
• Silicon Manufacturer: Freescale
• Core Architecture: ARM
• Core Sub-architecture: Cortex - A8
• Silicon Core Number: I.MX5
• Silicon Family Name: I.MX53
• Peak Reflow Compatible (260 C): Yes
• Rohs Compliant: Yes
• Leaded Process Compatible: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: i.MX53
• Lead Free Status / Rohs Status: Supplier Unconfirmed

1
2
4.7.17.2.2
Figure 88
serial mode receive timing characteristics.
1
2
4.7.17.3
The following subsections give the UART transmit and receive timings in IrDA mode.
4.7.17.3.3
Figure 89
the transmit timing characteristics.
Freescale Semiconductor
F
T
The UART receiver can tolerate 1/(16*F
exceed 3/(16*F
F
ref_clk
baud_rate
baud_rate
UA1
UA2
(output)
ID
(input)
ID
RXD
TXD
: The period of UART reference clock ref_clk (ipg_perclk after RFDIV divider).
: Baud rate frequency. The maximum baud rate the UART can support is (ipg_perclk frequency)/16.
: Baud rate frequency. The maximum baud rate the UART can support is (ipg_perclk frequency)/16.
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.
Transmit Bit Time
UART IrDA Mode Timing
baud_rate
UART Receiver
UART IrDA Mode Transmitter
Start
Start
UA1
UA2
Bit
Bit
).
Figure 87. UART RS-232 Serial Mode Transmit Timing Diagram
Figure 88. UART RS-232 Serial Mode Receive Timing Diagram
Receive Bit Time
i.MX53xD Applications Processors for Consumer Products, Rev. 1
Bit 0
Table 85. RS-232 Serial Mode Transmit Timing Parameters
Bit 0
Table 86. RS-232 Serial Mode Receive Timing Parameters
Parameter
Parameter
Bit 1
Bit 1
baud_rate
1
Bit 2
Bit 2
) tolerance in each bit. But accumulation tolerance in one frame must not
Bit 3
UA2
Bit 3
UA1
Bit 4
Bit 4
Symbol
Symbol
t
t
Rbit
Tbit
Bit 5
Bit 5
1/(16*F
1/F
1/F
Bit 6
Bit 6
baud_rate
baud_rate
T
ref_clk
Min
Min
baud_rate
Bit 7
2
Bit 7
1
2
–
–
)
Possible
Possible
Par Bit
Par Bit
Parity
Parity
UA1
UA2
Bit
Bit
1/(16*F
1/F
1/F
Electrical Characteristics
baud_rate
baud_rate
T
STOP
STOP
Max
Max
ref_clk
UA1
UA2
BIT
BIT
baud_rate
Table 86
+
+
Table 87
Next
Start
Next
Start
)
Bit
Bit
Units
Units
—
—
lists
lists
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