pt7a6525 Pericom Technology Inc, pt7a6525 Datasheet - Page 21

• Manufacturer Part Number: pt7a6525
• Description: Pt7a6525/6525l/6526 Hdlc Controller
• Manufacturer: Pericom Technology Inc

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PT0017(12/05)
Figure 8. RFIFO Configuration (Long Frame)
Figure 9. RFIFO Configuration (Short Frame)
RFIFO
Inaccessible
RFIFO
Accessible
RFIFO
Inaccessible
RFIFO
Accessible
1
2
32 Bytes
32 Bytes
1
2
32 Bytes
32 Bytes
a) Prior to
b)
acknowledgement
Frame i + n
Frame i + 2
Frame i + 1
Block
Block
Last Part
of Frame i
B+1
Prior to
Acknowledgement
B
0 < n ≤ 16
21
PT7A6525/6525L/6526 HDLC Controller
b) After
Acknowledgement
Free
Block
B+1
a)
Frame i + 1
Frame i + n
Frame i + 2
After
Acknowledgement
RFIFO
RFIFO
2
1
RFIFO
RFIFO
1
2
Data Sheet
Ver:8