Board Users Guide

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.
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