I.MX27 Datasheet, PDF (47/148 Pages) Freescale Semiconductor, Inc – Multimedia Applications Processor

Electrical Characteristics
Table 17. RPP Sequence Delay Comparisons Timing Parameters
ID
Parameters
OW1
OW2
OW3
OW4
Reset Time Low
Presence Detect High
Presence Detect Low
Reset Time High
Symbol
t_RSTL
t_PDH
t_PDL
t_RSTH
Min
Typical
Max
480
511
15
—
60
60
—
240
480
512
—
Figure 5 depicts Write 0 Sequence timing, and Table 18 lists the timing parameters.
One-Wire bus
(BATT_LINE)
OW6
Units
µs
µs
µs
—
OW5
Figure 5. Write 0 Sequence Timing Diagram
Table 18. WR0 Sequence Timing Parameters
ID
OW5
OW6
Parameter
Write 0 Low Time
Transmission Time Slot
Symbol
t_{WR0_low}
t_SLOT
Min
60
OW5
Typical
Max
Units
100
120
µs
117
120
µs
Figure 6 depicts Write 1 Sequence timing, Figure 7 depicts the Read Sequence timing, and Table 19 lists
the timing parameters.
One-Wire bus
(BATT_LINE)
OW8
OW7
Figure 6. Write 1 Sequence Timing Diagram
One-Wire bus
(BATT_LINE)
OW8
OW7
OW9
Figure 7. Read Sequence Timing Diagram
i.MX27 and i.MX27L Data Sheet, Rev. 1.5
Freescale Semiconductor
47