Freescale Semiconductor MPC5200B ユーザーズマニュアル
ATA I/O Cable Specifications
MPC5200B Users Guide, Rev. 1
Freescale Semiconductor
11-37
Figure 11-10. Timing Diagram—Reset Timing
11.9
ATA I/O Cable Specifications
For reference, the standard ATA cable specifications affects stem integrity and should not exceed 18inches or 0.46m. Total cable capacitance
should not exceed 35pF.
should not exceed 35pF.
Table 11-40. Reset Timing Characteristics
Name
PIO Timing Parameter
Min/Max
Timing
tM
Reset pulse width
Min
25µs
tN
Reset negated to BSY active setup
Max
400ns
tP
Reset negated to DASP inactive setup
Max
1ms
tQ
DASP active to PDIAG active setup
Max
30s
tR
Drive 0—Reset negated to DASP active setup
Max
450ms
Drive 1—Reset negated to DASP active setup
Max
400ms
tS
DASP active to PDIAG inactive setup
Max
30.5s
RESET
BSY
DASP
PDIAG
BSY
DASP
Drive 0
Drive 1
tM
tN
tP
tQ
tR Drive 0
tR Drive 1
tS
Can set BSY=0 if Drive 1 not present
Can assert DASP to indicate
Control
Registers
tP
tN
active if Drive 1 not present