PM5380-BI PMC-Sierra, Inc., PM5380-BI Datasheet - Page 422

• Manufacturer Part Number: PM5380-BI
• Description: Network Interface, SATURN User Network Interface (8x155) Telecom Standard Product
• Manufacturer: PMC-Sierra, Inc.

Proprietary and Confidential to PMC-Sierra, Inc., and for its customers’ internal use.
Document No.: PMC- 2010299, Issue 2
5.
6.
7.
8.
Table 28 Microprocessor Interface Write Access (Figure 49)
Symbol
tSAW
tSDW
tSALW
tHALW
tVL
tSLW
tHLW
tHDW
tHAW
tVWR
Figure 49 Microprocessor Interface Write Timing
Notes on Microprocessor Interface Write Timing:
1.
2.
3.
4.
(CSB+WRB)
Parameter tH
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.
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.
Output tri-state delay is the time in nanoseconds from the 1.4 Volt of the reference signal to the point
where the total current delivered through the output is less than or equal to the leakage current.
A valid write cycle is defined as a logical OR of the CSB and the WRB signals.
In non-multiplexed address/data bus architectures, ALE should be held high so parameters tS
tH
Parameter tH
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.
ALW
D[7:0]
A[8:0]
ALE
, tV
Parameter
Address to Valid Write Set-up Time
Data to Valid Write Set-up Time
Address to Latch Set-up Time
Address to Latch Hold Time
Valid Latch Pulse Width
Latch to Write Set-up
Latch to Write Hold
Data to Valid Write Hold Time
Address to Valid Write Hold Time
Valid Write Pulse Width
L
, tS
AR
AW
LW
is not applicable if address latching is used.
is not applicable if address latching is used.
, and tH
tSalw
tVl
tVl
tSaw
LW
are not applicable.
tSlw
S/UNI®-8x155 ASSP Telecom Standard Product Data Sheet
tHalw
tVwr
tVwr
tSdw
VALID
Min
10
20
10
10
40
5
5
5
0
5
tHaw
tHdw
Max
—
—
—
—
—
—
—
—
—
—
Released
ALW
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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