参数资料
型号: MCIMX31LITEKITC
厂商: Freescale Semiconductor
文件页数: 74/122页
文件大小: 0K
描述: BOARD DEV FOR I.MX31
标准包装: 1
类型: MCU
适用于相关产品: i.MX31
所含物品: 模块和其他硬件
Electrical Characteristics
MCIMX31/MCIMX31L Technical Data, Rev. 4.1
Freescale Semiconductor
55
Figure 41 depicts the setup and hold requirements of the trace data pins with respect to TRACECLK, and
Table 41 lists the timing parameters.
Figure 41. Trace Data Timing Diagram
4.3.10.1
Half-Rate Clocking Mode
When half-rate clocking is used, the trace data signals are sampled by the TPA on both the rising and falling
edges of TRACECLK, where TRACECLK is half the frequency of the clock shown in Figure 41.
4.3.11
FIR Electrical Specifications
FIR implements asynchronous infrared protocols (FIR, MIR) that are defined by IrDA (Infrared Data
Association). Refer to http://www.IrDA.org for details on FIR and MIR protocols.
4.3.12
Fusebox Electrical Specifications
Table 40. ETM TRACECLK Timing Parameters
ID
Parameter
Min
Max
Unit
Tcyc
Clock period
Frequency dependent
ns
Twl
Low pulse width
2
ns
Twh
High pulse width
2
ns
Tr
Clock and data rise time
3
ns
Tf
Clock and data fall time
3
ns
Table 41. ETM Trace Data Timing Parameters
ID
Parameter
Min
Max
Unit
Ts
Data setup
2
ns
Th
Data hold
1
ns
Table 42. Fusebox Timing Characteristics
Ref. Num
Description
Symbol
Minimum
Typical
Maximum
Units
1
Program time for eFuse1
1 The program length is defined by the value defined in the epm_pgm_length[2:0] bits of the IIM module. The value to program
is based on a 32 kHz clock source (4 * 1/32 kHz = 125 s).
tprogram
125
s
Because
of
an
order
from
the
United
States
International
Trade
Commission,
BGA-packaged
product
lines
and
part
numbers
indicated
here
currently
are
not
available
from
Freescale
for
import
or
sale
in
the
United
States
prior
to
September
2010:
i.MX31
Product
Family
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