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PMC-Sierra, Inc.
PM5349 S/UNI-QUAD
DATASHEET
PMC-971239 ISSUE 6 SATURN USER NETWORK INTERFACE (155-QUAD)
Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use
231
4. In non-multiplexed address/data bus architectures, ALE should be held high
so parameters tS
ALR
, tH
ALR
, tV
L
, tS
LR
, and tH
LR
are not applicable.
5. Parameter tH
AR
is not applicable if address latching is used.
6. When a set-up time is specified between an input and a clock, the set-up time
is the time in nanoseconds from the 1.4 Volt point of the input to the 1.4 Volt
point of the clock.
7. When a hold time is specified between an input and a clock, the hold time is
the time in nanoseconds from the 1.4 Volt point of the input to the 1.4 Volt
point of the clock.
Table 16: Microprocessor Interface Write Access (Figure 25)
Symbol Parameter Min Max Units
tS
AW
Address to Valid Write Set-up Time 10 ns
tS
DW
Data to Valid Write Set-up Time 20 ns
tS
ALW
Address to Latch Set-up Time 10 ns
tH
ALW
Address to Latch Hold Time 10 ns
tV
L
Valid Latch Pulse Width 5 ns
tS
LW
Latch to Write Set-up 0 ns
tH
LW
Latch to Write Hold 5 ns
tH
DW
Data to Valid Write Hold Time 5 ns
tH
AW
Address to Valid Write Hold Time 5 ns
tV
WR
Valid Write Pulse Width 40 ns