MCIMX27 Motorola Semiconductor Products, MCIMX27 Datasheet - Page 49

• Manufacturer Part Number: MCIMX27
• Manufacturer: Motorola Semiconductor Products

Figure 6
the timing parameters.
3.5.3
This section describes the electrical information of the Parallel ATA module compliant with ATA/ATAPI-6
specification.
Parallel ATA module can work on PIO/Multi-Word DMA/Ultra DMA transfer modes. Each transfer mode
has different data transfer rate, Ultra DMA mode 4 data transfer rate is up to 100 MB/s. Parallel ATA
module interface consist of a total of 29 pins, Some pins act on different function in different transfer
mode. There are different requirements of timing relationships among the function pins conform with
ATA/ATAPI-6 specification and these requirements are configurable by the ATA module registers.
Below defines the AC characteristics of all the interface signals on all data transfer modes.
Freescale Semiconductor
OW5
OW6
OW7
OW8
OW9
depicts Write 1 Sequence timing,
ID
ID
ATA Electrical Specifications
One-Wire bus
(BATT_LINE)
(BATT_LINE)
One-Wire bus
Write 0 Low Time
Transmission Time Slot
Write 1/Read Low Time
Transmission Time Slot
Release Time
Parameter
Parameter
Table 17. WR0 Sequence Timing Parameters
i.MX27 Data Sheet, Advance Information, Rev. 0.1
Figure 6. Write 1 Sequence Timing Diagram
Table 18. Write 1/Read Timing Parameters
Figure 7. Read Sequence Timing Diagram
Preliminary—Subject to Change Without Notice
OW7
OW7
Figure 7
OW9
t
t
Symbol
depicts the Read Sequence timing, and
Symbol
RELEASE
WR0_low
t
t
t
LOW1
SLOT
SLOT
OW8
OW8
OW5
Min
Min
60
60
15
1
Typ
100
117
Typ
117
5
Max
Max
120
120
120
15
45
Signal Descriptions
Table 18
Units
Units
µs
µs
µs
µs
µs
lists
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