Nec Network Controller uPD98502 Manual do Utilizador descarregar pdf (Página 345)

100

101

CHAPTER 6 USB CONTROLLER

Preliminary User’s Manual S15543EJ1V0UM

345

6.6.2 Rx Buffer configuration

Data received from the USB is stored into a receive pool in system memory.

USB Controller uses three receive pools. The configuration of the receive pools is shown below.

Figure 6-13. Receive Buffer Configuration

Buffer descriptor

Data

Buffer

Data

Buffer

Data

Buffer

Link pointer

Buffer descriptor

Data

Buffer

Data

Buffer

Buffer descriptor

Buffer Directory

Link pointer

Size

1-64k Bytes

Buffer descriptor

Data

Buffer

The receive buffer is composed of the Buffer Directory and Data Buffer. The receive buffer is prepared in system

memory by the V

4120A.

The formats of the Buffer Directory, Buffer descriptor, and Link Pointer are each described below.

1 2 ... 340 341 342 343 344 345 346 347 348 349 350 ... 594 595

Comentários a estes Manuais

Sem comentários

Nec Network Controller uPD98502 Manual do Utilizador Página 345

Comentários a estes Manuais

Manuais e produtos relacionados com Hardware Nec Network Controller uPD98502