NSK70721PE.C2 Intel, NSK70721PE.C2 Datasheet - Page 56

• 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

SK70725/SK70721 — Enhanced Multi-Rate DSL Data Pump Chip Set
56
No Sync
NOTES:
1. “Sync” = Frame synchronization word match.
2. “No Sync” = Frame synchronization word mismatch.
3. Upon entering Stage 6, ACTIVE is set to 1 and Deactivation timer starts.
4. State 0 corresponds to Active-1 and Active-2 states as shown in
5. State 6 corresponds to Pending deactivated state as shown in
6. This state machine applies to 4-level signals in Framed modes 6 and 7 only.
7. COFA: Change of Frame Alignment.
Figure 22. MDSL Synchronization State Machine
Out-of-Sync
ACTIVE = 1
State 6
the EMDP goes directly back to State 0. An Out-of-Sync condition is declared in State 6, which is
reached when no FSW is detected for six consecutive frames. As soon as State 6 of the
synchronization state machine is reached the EMDP goes to the Pending Deactivation state of the
Activation state machine and activates the Deactivation Timer described in
If the deactivation timer expires without re-establishing frame synchronization, the Activation
State Machine progresses to Deactivated state.
synchronization state returns to State 0.
If frame synchronization is re-established before the deactivation timer expires, the EDSP will
return to the In-Sync condition (State 0) through State 7 if two consecutive frames are received
without any change of frame alignment (COFA = 0). If a change of frame alignment does occur
(COFA = 1), two consecutive matches are required to move through State 8 back to State 0.
Sync with
COFA = 1
No Sync
State 7
Sync with
COFA = 0
No Sync
State
No Sync
5
No Sync
State 8
State
State
8
4
7
No Sync
Figure
State
Figure
COFA = 0
Sync with
3
19.
No Sync
19.
State
Sync with
COFA = 1
2
No Sync
Sync
State
1
ACTIVE = 0
State 0
In-Sync
Table
No Sync
26.
Sync
Datasheet