IDT77V400 Integrated Device Technology, IDT77V400 Datasheet - Page 30

• Manufacturer Part Number: IDT77V400
• Description: 1.24 Gbps Switching Memory **not Recommended For New Designs**
• Manufacturer: Integrated Device Technology

IDT77V011
UNI Cell Header (five byte field)
Command Cell Transaction ID (two byte field)
8
8
7
7
GFC
VPI
VCI
Copied from Command Cell
Copied from Command Cell
6
6
5
5
HEC
VCI
Bit
Bit
Figure 22 Valid Transaction Field Formats for In-Stream
Figure 23 Valid Message Type Format for In-Stream
4
4
Figure 21 Valid Header Formats for In-Stream
Figure 20 General Format In-Stream
Message Type (one byte field)
PT
3
3
8
VPI
VCI
2
2
7
CLP
1
1
6
byte 15
byte 16
byte 51
byte 52
byte 53
byte 1
byte 5
byte 6
byte 7
byte 8
byte 9
Acknowledge Bit
Acknowledge Request Bit
Not Used
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1
2
3
4
5
6
7
Message Type ID
5
Bit
30 of 43
4
NNI Cell Header (five byte field)
Notification Cell Transaction ID (two byte field)
TM
3
8
8
0
0
Programming Cell Format
2
7
7
0
0
TM
VPI
VCI
Programming Cell
TM
1
TM
6
6
0
0
ATM
Header
Transaction
ID
Message
Type
Device
ID
Message
Data
and/or
Padding
Trailer
Programming Cell
Programming Cell
5348drw25
8
5
5
0
0
HEC
VPI
Bit
VCI
Bit
5348drw21
4
4
0
0
PT
3
3
0
0
VCI
2
2
0
0
CLP
1
1
0
0
5348drw24
5348drw23
1
2
3
4
5
6
7
March 15, 2001