S2004TB Applied Micro Circuits Corporation, S2004TB Datasheet - Page 12

• Manufacturer Part Number: S2004TB
• Manufacturer: Applied Micro Circuits Corporation

Specifications of S2004TB

• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (min): 3.13V
• Operating Supply Voltage (max): 3.47V
• Operating Temp Range: 0C to 70C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 208
• Lead Free Status / RoHS Status: Not Compliant

Figure 9. Channel Lock Synchronization Timing
1. The first three K28.5’s will be reported as “K28.5” (011), subsequent K28.5 will be reported as “Resync” or “channel lock detected.” See Table 7.
12
S2004
deskewed RESYNC C
deskewed RESYNC D
deskewed RESYNC A
deskewed RESYNC B
CHANNEL LOCK
RX data out
RESYNC A
RESYNC B
RESYNC C
RESYNC D
KFLAGA
(Internal)
(Internal)
(Internal)
(Internal)
(internal)
(internal)
(internal)
(internal)
(internal)
A,B,C,D
ERRA
EOFA
Figure 8. Channel Lock State Machine
All four channels in Re-Sync with
valid data within deskew window
0
1
1
RE-SYNC
(K28.5)
FIFO Deskewing
BC
*Note 1
(K28.5)
4 K28.5 Detected
BC
ACQUIRING SYNC
valid data outside deskew window
(K28.5)
BC
or TCLKD = LOW
Errored codeword or
IN SYNC
(K28.5)
BC
0
1
0
Errored codeword or <4 K28.5
Valid
Data
or TCLKD = LOW
....
....
....
....
....
....
....
....
....
....
....
....
....
QUAD SERIAL BACKPLANE DEVICE
decoding error rate > 50% (block 16)
four sequential decoding errors or
One K28.5 Detected
FIFO Deskewed
CRU Loss of Lock or
NO SYNC
TCLKD = LOW or
BC
BC
BC
October 10, 2000 / Revision D
BC
RESET
0
1
0
Valid
Data