MCIMX35 Motorola Semiconductor Products, MCIMX35 Datasheet - Page 37

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

Figure
WEIM accesses to external memory devices with the timing parameters mentioned in
control parameter settings.
Freescale Semiconductor
MCIMX35 (i.MX35) Multimedia Applications Processor for Automotive Products Advance Information, Rev. 0
13,
1
2
WE10
WE11
WE12
WE13
WE14
WE15
WE16
WE17
WE18
WE19
WE20
WE21
WE22
WE23
WE24
WE25
WE26
WE27
“High” is defined as 80% of signal value, and “low” is defined as 20% of signal value.
BCLK parameters are measured from the 50% point. For example, “high” is defined as 50% of signal value
and “low” is defined as 50% of signal value.
WE8
WE9
ID
Figure
Test conditions: load capacitance, 25 pF. Recommended drive strength for
all controls, address, and BCLK is set to maximum drive.
Recommended drive strength for all controls, address and BCLK is set to
maximum drive.
Clock rise/fall to RW_B Valid
Clock rise/fall to RW_B Invalid
Clock rise/fall to OE_B Valid
Clock rise/fall to OE_B Invalid
Clock rise/fall to EBy_B Valid
Clock rise/fall to EBy_B Invalid
Clock rise/fall to LBA_B Valid
Clock rise/fall to LBA_B Invalid
Clock rise/fall to Output Data Valid
Clock rise to Output Data Invalid
Input Data Valid to Clock rise, FCE=1
Input Data Valid to Clock rise, FCE=0
Clock rise to Input Data Invalid, FCE=1
Clock/k rise to Input Data Invalid, FCE=0
ECB_B setup time, FCE=1
ECB_B setup time, FCE=0
ECB_B hold time, FCE=1
ECB_B hold time, FCE=0
DTACK_B setup time
DTACK_B hold time
14,
Figure
Table 31. WEIM Bus Timing Parameters
15,
Preliminary—Subject to Change Without Notice
Figure
Parameter
16,
Figure
NOTE
17, and
Figure 18
1
(continued)
depict some examples of basic
Min.
–3.2
0.9
0.9
1.2
1.2
0.7
0.7
1.0
1.0
1.0
1.0
1.2
6.9
0.2
2.4
1.1
7.2
5.4
0
0
Max.
2.6
2.6
2.5
2.5
2.4
2.4
2.8
2.8
3.0
3.0
—
—
—
—
—
—
—
—
—
—
Table 31
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
for specific
37