Ata I/O Cable Specifications; Timing Diagram—Reset Timing - Freescale Semiconductor MPC5200B User Manual

RESET
BSY
Drive 0
DASP
Control
Registers
BSY
Drive 1
PDIAG
tR Drive 1
DASP
Name
tM Reset pulse width
tN Reset negated to BSY active setup
tP Reset negated to DASP inactive setup
tQ DASP active to PDIAG active setup
tR Drive 0—Reset negated to DASP active setup
Drive 1—Reset negated to DASP active setup
tS DASP active to PDIAG inactive setup
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.
Freescale Semiconductor
tM
tN
tP
tR Drive 0
tN
tP
Figure 11-10. Timing Diagram—Reset Timing
Table 11-40. Reset Timing Characteristics
PIO Timing Parameter
MPC5200B Users Guide, Rev. 1
ATA I/O Cable Specifications
Can set BSY=0 if Drive 1 not present
Can assert DASP to indicate
active if Drive 1 not present
tQ
tS
Min/Max
Min
Max
Max
Max
Max
Max
Max
Timing
25µs
400ns
1ms
30s
450ms
400ms
30.5s
11-37