MCIMX53-START Freescale Semiconductor, MCIMX53-START Datasheet - Page 138

• 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
1
2
Electrical Characteristics
4.7.17.3.4
Figure 90
receive timing characteristics.
138
F
T
exceed 3/(16*F
F
The UART receiver can tolerate 1/(16*F
(output)
ref_clk
baud_rate
(input)
baud_rate
UA3
UA4
UA5
UA6
RXD
TXD
ID
ID
: 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 UART IrDA mode receive timing, with 8 data bit/1 stop bit format.
Receive Bit Time
Receive IR Pulse Duration
Start
Start
Bit
Bit
baud_rate
UART IrDA Mode Receiver
Transmit Bit Time in IrDA mode
UA3
UA5
Transmit IR Pulse Duration
).
Bit 0
Bit 0
i.MX53xD Applications Processors for Consumer Products, Rev. 1
1
Parameter
Parameter
Figure 89. UART IrDA Mode Transmit Timing Diagram
Figure 90. UART IrDA Mode Receive Timing Diagram
in IrDA mode
Table 87. IrDA Mode Transmit Timing Parameters
Table 88. IrDA Mode Receive Timing Parameters
Bit 1
Bit 1
baud_rate
Bit 2
Bit 2
) tolerance in each bit. But accumulation tolerance in one frame must not
UA3
UA5
Bit 3
Bit 3
Symbol
t
Symbol
t
TIRpulse
RIRpulse
t
t
TIRbit
RIRbit
Bit 4
Bit 4
(3/16)*(1/F
1/(16*F
1/F
1/F
UA4
UA6
baud_rate
Bit 5
– T
Bit 5
1.41 us
baud_rate
T
ref_clk
Min
Min
ref_clk
baud_rate
baud_rate
2
2
1
Bit 6
Bit 6
–
–
)
)
(3/16)*(1/F
(5/16)*(1/F
1/F
1/(16*F
1/F
Bit 7
Bit 7
baud_rate
Freescale Semiconductor
baud_rate
UA3
UA5
T
Max
Max
ref_clk
baud_rate
Table 88
baud_rate
baud_rate
Possible
Possible
+ T
Parity
Parity
Bit
Bit
+
ref_clk
)
UA3
UA5
) +
)
lists the
STOP
STOP
Units
Units
BIT
BIT
—
—
—
—