NSK70721PE.C2 Intel, NSK70721PE.C2 Datasheet - Page 55

• Manufacturer Part Number: NSK70721PE.C2
• Manufacturer: Intel

Specifications of NSK70721PE.C2

• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (min): 4.75V
• Operating Supply Voltage (max): 5.25V
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 28
• Lead Free Status / RoHS Status: Supplier Unconfirmed

3.2.6
Datasheet
1. See
2. If time elapses and Data Pump has not moved to Active1 state, the Data Pump enters the Deactivated state.
3. Pending Deactivation can be reached from either Active1 or Active2 states in framed modes 6 and 7.
4. If synchronization word detection does not occur before time elapses, the Data Pump moves to the Deactivated state.
5. When the Data Pump fails to activate, there is no waiting period in the Deactivated state; the Data Pump immediately goes to
Deactivation
LOS Timer
the Inactive state.
Table 26. State Machine Default Timer Durations (Figure 18 and Figure 19)
Table 27. Activation and Synchronization States
Timer
Timer
MAT
Table 10
3,4
2
5
and
If MAT expires, or signal is lost before the Active1 state is reached, the EMDP moves directly to
the Deactivated state and ceases transmission. The Master remains in the Deactivated state until the
LOS timer has expired
presence of signal on the line is no longer detected.
In framed modes frame synchronization may be lost during a signal interruption. If this occurs, the
EDSP will begin the frame re-synchronization process, as described in the next section.
Frame Synchronization
Figure 22
between the Synchronization states and Activation states. The same Synchronization states are
used in both the Master and Slave Data Pumps, but only when the EMDP is operating in the framed
modes 6 and 7.
Starting at the initial Out-of-Sync condition (State 6), the device progresses through State 7 until
two consecutive FSW are detected and then Synchronization is declared in State 0.
Once the In-Sync condition is achieved, failure to detect an FSW causes the EMDP to move to
State 1. Each subsequent failure to detect an FSW at the appropriate time advances the state
machine one step through States 1 to 5. If an FSW is detected at any time before State 6 is reached
Active
Pending Deactivation
kbps
86.5
272
6.0
3.0
Table 25
Activation State
kbps
Default
59.0
400
4.0
2.0
shows the EMDP Synchronization State Machine.
for information on changing the MAT from its default values.
kbps
44.5
528
1
3.0
1.5
Timer Duration (seconds)
Enhanced Multi-Rate DSL Data Pump Chip Set — SK70725/SK70721
kbps
30.0
784
2.0
1.0
(Table
(framed)
States 0, 1, 2, 3, 4, and 5
States 6
1168
kbps
30.0
2.0
1.0
26). The Slave transitions to the Inactive state as soon as the
Synchronization States
(unframed)
1168
kbps
20.0
1.3
0.7
Master Mode: Starts with an activation request. Reset
for synchronization when a signal from the Slave is
detected.
Slave Mode: Starts when a signal from the Master is
detected.
Starts when the EDSP enters the Pending Deactivation
state due to Loss of Synchronization Word for 6
consecutive frames. Occurs only in framed modes 6 and
7.
Master Mode Only: Starts in Deactivated state when
signal from the Slave is no longer detected. Set to 0
whenever signal from the Slave is detected. Restarts
when signal is no longer detected.
Table 27
Description
shows the correspondence
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