NEC Network Controller uPD98502 User Manual
Page 248
CHAPTER 4 ATM CELL PROCESSOR
248
Preliminary User’s Manual S15543EJ1V0UM
Figure 4-9. Tx Buffer Elements
- T x buffer directory
Tx buffer directory Address
- T x link pointer
0
31
0
31
0
Tx buffer desciptor 0
Tx buffer desciptor 1
Tx buffer desciptor 2
Tx buffer desciptor 3
Tx buffer desciptor 4
Tx buffer desciptor N
Tx link p ointer
- T x buffer descriptor
31
0
16 15
Buffer A ddress
L
Size
- T x packet descriptor
31
0
16 15
Tx buffer directory Address
|
Attribute
C PC S-U U
C PI
D L
0
0 D L
Figure 4-9 shows Tx buffer elements. Each element consists of a couple of 32-bit words in sequential address.
Detail is given in following sections.