NEC Network Controller uPD98502 - Manual (Page 263)

CHAPTER 4 ATM CELL PROCESSOR
Preliminary User’s Manual S15543EJ1V0UM 263
Figure 4-24. Work RAM Usage
P ack et Info S tructure
P ool
(4 W ords x 64)
Free B lock P ool
/for V C T able/
(16 W ords x 64)
T em porary D ata
4096 bytes
1024 bytes
64 bytes
Flow T able P ool
(4 W ords x 64)
1024 bytes
P ool D escriptor
(2 W ords x 8)
xx80_0000H
xx80_0040H
xx80_1040H
xx80_1440H
xx80_1840H
xx80_3F F F H
W o rk R A M (1 0 K b yte s )
4.8.2 Transmission function
V
R
4120A sets the VC information in VC table prior to the every packet transmission, and issue Tx_Ready
command with VC number in order to transmit packet belongs to the VC.
The transmitting data structure is described in Section 4.5.1 Tx buffer structure.