MCIMX35 Motorola Semiconductor Products, MCIMX35 Datasheet - Page 91

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

4.7.16
Figure 61
Figure 62
Freescale Semiconductor
1
2
3
MLBSIG/MLBDAT output high
impedance from MLBCLK low
MLBSIG/MLBDAT input valid
MLBSIG/MLBDAT input hold
The MLB Controller can shut off MLBCLK to place MediaLB in a low-power state.
Pulse width variattion is measured at 1.25V by triggering on one edge of MLBCLK and measuring the spread on the other
edge, measured in ns peak-to-peak (pp)
The board must be designed to insure that the high-impedance bus does not leave the logic state of the final driven bit for this
time period. Therefore, coupling must be minimized while meeting the maximum capacitive load listed.
MCIMX35 (i.MX35) Multimedia Applications Processor for Automotive Products Advance Information, Rev. 0
(BATT_LINE)
1-Wire bus
OW1
OW2
OW3
OW4
from MLBCLK low
to MLBCLK falling
Bus Hold Time
ID
Parameter
depicts the RPP timing, and
depicts write 0 sequence timing, and
1-Wire Timing Specifications
Reset Time Low
Presence Detect High
Presence Detect Low
Reset Time High
Table 57. RPP Sequence Delay Comparisons Timing Parameters
Figure 61. Reset and Presence Pulses (RPP) Timing Diagram
Table 56. MLB Device 1024Fs Timing Parameters (continued)
Parameters
Symbol
t
t
t
“Reset Pulse”
t
dsmcf
dhmcf
mcfdz
mdzh
1-WIRE Tx
Preliminary—Subject to Change Without Notice
OW1
Table 57
Min
1
0
0
2
Table 58
lists the RPP timing parameters.
Typ
t
t
t
t
RSTL
PDH
PDL
RSTH
Symbol
lists the timing parameters.
Max
t
mckl
OW3
480
15
60
480
OW2
“Presence Pulse”
Min.
DS2502 Tx
Units
ns
ns
ns
ns
Typ.
511
512
—
—
OW4
Max.
240
60
—
—
Comment
Note
Units
3
µs
µs
µs
µs
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