参数资料
型号: PM4314-RI
厂商: PMC-SIERRA INC
元件分类: 数字传输电路
英文描述: QUAD T1/E1 LINE INTERFACE DEVICE
中文描述: DATACOM, PCM TRANSCEIVER, PQFP128
封装: PLASTIC, QFP-128
文件页数: 155/170页
文件大小: 823K
代理商: PM4314-RI
PM4314 QDSX
DATA SHEET
PMC-950857
ISSUE 5
QUAD T1/E1 LINE INTERFACE DEVICE
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
143
4. In non-multiplexed address/data bus architectures, ALE should be held high
and parameters tSALR, tHALR, tVL, tSLR, and tHLR 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 18
- Microprocessor Interface Write Access (Figure 30)
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
20
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
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