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MPC5121E датащи(PDF) 46 Page - Freescale Semiconductor, Inc

номер детали MPC5121E
подробное описание детали  Advance Information
PDF  86 Pages
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производитель  FREESCALE [Freescale Semiconductor, Inc]
домашняя страница  http://www.freescale.com
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MPC5121E датащи(HTML) 46 Page - Freescale Semiconductor, Inc

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MPC5121E/MPC5123 Data Sheet, Rev. 1
Electrical and Thermal Characteristics
Freescale Semiconductor
46
3.3.9.2
PIO Mode Timing
A timing diagram for the PIO read mode is given in Figure 24.
Figure 24. PIO Read Mode Timing
To fulfill read mode timing, the different timing parameters given in Table 3-26 must be observed.
tskew4
Max difference in cable propagation delay between: ATA_IORDY and
ATA_DATA (read)
Cable
A9.14
tskew5
Max difference in cable propagation delay between: ATA_DIOR,
ATA_DIOW, ATA_DMACK and ATA_CS0, ATA_CS1, ATA_DA2, ATA_DA1,
ATA_DA0, ATA_DATA (write)
Cable
A9.15
tskew6
Max difference in cable propagation delay without accounting for ground
bounce
Cable
A9.16
Table 3-26. Timing Parameters PIO Read
ATA
Parameter
PIO Read
Mode Timing
Parameter
Value
How to meet
SpecID
t1
t1
t1(min) = time_1 * T - (tskew1 + tskew2 + tskew5)
calculate and programming
time_1, see Reference Manual
A9.20
t2
t2r
t2(min) = time_2r * T - (tskew1 + tskew2 + tskew5)
calculate and programming
time_2r, see Reference Manual
A9.21
t9
t9
t9(min) = time_9 * T - (tskew1 + tskew2 + tskew6)
calculate and programming
time_9, see Reference Manual
A9.22
Table 3-25. PATA Timing Parameters (continued)
Name
Meaning
Controlled by
Value
SpecID
ADDR
DIOR
Read Data (15:0)
IORDY
IORDY
t1
t2r
t9
t5
tA
t6
trd1
Preliminary



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