參數(shù)資料
型號: MT90500AL
廠商: Mitel Networks Corporation
英文描述: Multi-Channel ATM AAL1 SAR
中文描述: 多通道自動柜員機AAL1特區(qū)
文件頁數(shù): 120/159頁
文件大?。?/td> 514K
代理商: MT90500AL
MT90500
120
6.2.2
Local TDM Bus
Table 81 - Local TDM Bus Clock Parameters
Characteristic
Sym
Min
Typ
Max
Units
Test Conditions
Clock Skew
- LOCx2 falling to LOCx1 change
t
LSK
10
ns
C
L
= 50 pF
LOCx2 Period
t
Lx2P
244
ns
LOCx2 Pulse Width (HIGH / LOW)
t
Lx2H/L
119
122
125
ns
Input clock = 16.39 MHz (61 ns)
LOCx1 Period
t
Lx1P
488
ns
LOCx1 Pulse Width (HIGH / LOW)
t
Lx1H/L
241
244
247
ns
Frame Pulse Width
Positive Frame Pulse
Negative Frame Pulse
t
LSW
488
244
ns
ns
Frame Pulse Delay
Positive: LOCx2 falling to LSYNC rising
Negative: LOCx2 rising to LSYNC falling
t
LSD
0
0
10
10
ns
ns
C
L
= 50 pF
Frame Pulse Guaranteed Setup
Positive: LSYNC rising to LOCx2 falling
Negative: LSYNC falling to LOCx2 falling
t
LSS
220
98
ns
ns
Input clock = 16.39 MHz (61 ns)
C
L
= 50 pF
Frame Pulse Guaranteed Hold
Positive: LOCx2 falling to LSYNC falling
Negative: LOCx2 falling to LSYNC rising
t
LSH
230
108
ns
ns
Input clock = 16.39 MHz (61 ns)
C
L
= 50 pF
Note: The local bus operates at 2.048 Mbps only.
Table 82 - Local TDM Bus Data Output Parameters
Characteristic
Sym
Min
Typ
Max
Units
Test Conditions
LOCSTo Delay
- Data to Data Change
LOCx1 rising and ((LOCSTo HIGH to
LOCSTo LOW) or (LOCSTo LOW to
LOCSTo HIGH))
t
LODX
5
ns
C
L
= 50 pF
LOCSTo Delay
- Data to Data Valid
LOCx1 rising and ((LOCSTo HIGH to
LOCSTo LOW) or (LOCSTo LOW to
LOCSTo HIGH))
t
LODD
60
ns
C
L
= 50 pF
Note 1:
The local bus output is never high impedance, as data is always driven out on LOCSTo.
Note 2:
There is no differentiation between fast bus and slow bus on the local bus.
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