MT90500 Mitel Semiconductor, MT90500 Datasheet - Page 120

• Manufacturer Part Number: MT90500
• Description: Multi-Channel ATM AAL1 SAR
• Manufacturer: Mitel Semiconductor

MT90500
6.2.2
120
Clock Skew - LOCx2 falling to LOCx1 change
LOCx2 Period
LOCx2 Pulse Width (HIGH / LOW)
LOCx1 Period
LOCx1 Pulse Width (HIGH / LOW)
Frame Pulse Width
Frame Pulse Delay
Frame Pulse Guaranteed Setup
Frame Pulse Guaranteed Hold
Note: The local bus operates at 2.048 Mbps only.
LOCSTo Delay - Data to Data Change
LOCx1 rising and ((LOCSTo HIGH to
LOCSTo LOW) or (LOCSTo LOW to
LOCSTo HIGH))
LOCSTo Delay - Data to Data Valid
LOCx1 rising and ((LOCSTo HIGH to
LOCSTo LOW) or (LOCSTo LOW to
LOCSTo HIGH))
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.
Positive Frame Pulse
Negative Frame Pulse
Positive: LOCx2 falling to LSYNC rising
Negative: LOCx2 rising to LSYNC falling
Positive: LSYNC rising to LOCx2 falling
Negative: LSYNC falling to LOCx2 falling
Positive: LOCx2 falling to LSYNC falling
Negative: LOCx2 falling to LSYNC rising
Characteristic
Local TDM Bus
Characteristic
Table 82 - Local TDM Bus Data Output Parameters
Table 81 - Local TDM Bus Clock Parameters
t
t
Sym
LODD
LODX
t
t
Lx2H/L
Lx1H/L
Sym
t
t
t
t
t
t
t
Lx2P
Lx1P
LSW
LSK
LSD
LSS
LSH
Min
5
Min
119
241
220
230
108
98
0
0
Typ
Typ
244
122
488
244
488
244
Max
60
Max
125
247
10
10
10
Units
ns
ns
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
C
C
L
L
C
Input clock = 16.39 MHz (61 ns)
C
Input clock = 16.39 MHz (61 ns)
C
Input clock = 16.39 MHz (61 ns)
C
= 50 pF
= 50 pF
L
L
L
L
= 50 pF
= 50 pF
= 50 pF
= 50 pF
Test Conditions
Test Conditions