PMC-Sierra, Inc.
PRELIMINARY
PM5381 S/UNI-2488
DATASHEET
PMC-2000489
ISSUE 1
SATURN USER NETWORK INTERFACE FOR 2488 MBIT/S
18
MICROPROCESSOR INTERFACE TIMING CHARACTERISTICS
(T = -40°C to +85°C, V
C DD
= typical ± 10%)
Table 19: Microprocessor Interface Read Access (Figure 26)
Symbol
tS
Parameter
Min
10
5
Max
Units
ns
Address to Valid Read Set-up Time
Address to Valid Read Hold Time
Address to Latch Set-up Time
Address to Latch Hold Time
AR
tH
ns
AR
tS
10
10
ns
ALR
tH
ns
ALR
tV
tS
L
Valid Latch Pulse Width
5
0
5
ns
ns
ns
ns
ns
ns
LR
Latch to Read Set-up
tH
LR
Latch to Read Hold
tP
Valid Read to Valid Data Propagation Delay
Valid Read Negated to Output Tri-state
Valid Read Negated to INTB High
70
20
50
RD
tZ
tZ
RD
INTH
Proprietary and Confidentail to PMC-Sierra Inc., and for its Customer’s Internal Use
453
PMC [ PMC-SIERRA, INC ]
