Operation; Initialization; Buffer Structure For Ethernet Controller Block; Buffer Structure For Ethernet Block - NEC uPD98502 User Manual

5.3 Operation

5.3.1 Initialization

After a power on reset or a software reset, V
i) Interrupt Mask Registers
ii) Configuration Registers
iii) MII Management Registers
iv) Pool/Buffer Descriptor Registers

5.3.2 Buffer structure for Ethernet Controller block

The data buffer structure for Ethernet Controller is shown in Figure 5-4.
300
CHAPTER 5 ETHERNET CONTROLLER
4120A has to set the following registers:
R
Figure 5-4. Buffer Structure for Ethernet Block
Buffer Descriptor
Buffer Descriptor
Buffer Descriptor
Link Pointer
Buffer Descriptor
Buffer Descriptor
Buffer Descriptor
Link Pointer (null)
Preliminary User's Manual S15543EJ1V0UM
Data Buffer
Data Buffer
Data Buffer
Data Buffer
Data Buffer
Data Buffer