UM0851 datasheet(44/245 Pages) STMICROELECTRONICS

44 / 245 page

Communication device drivers

UM0851

44/245

Doc ID 16604 Rev 2

Figure 7.

GMAC block diagram

The GMAC-UNIV supports any one or a combination of the following PHY interfaces:

●

Gigabit media independent interface (GMII)/media independent interface (MII) [default]

●

Serial GMII (SGMII)

Apart from the above, the following hardware features are available and supported by the

software:

●

Promiscuous mode

●

Check Sum offload for received IP and TCP/UDP packets

●

Dual buffer ring (implicit chaining) being used for handling DMA descriptors. This option

allows a maximum of 4 KB of packets to be handled by a single DMA descriptor for

SPEAr600 and 16 KB of packets handled by a single DMA descriptor for SPEAr300

●

Magic packet detection support for waking up from sleep.

4.1.2

Software overview

The GMAC Ethernet driver sits on top of the GMAC controller and interfaces with the Linux

TCP/IP stack through the standard Linux network interface.

RX FIFO

MEM

TX FIFO

MEM

TX FC

RX FC

DMA

CSR

OMR

REGS

MAC

CSR

DMA

AHB

MASTER

I/F

AHB

SLAVE

I/F

PHY

I/F

SGMII

MUX

(G)MII

GMAC MTL

GMAC DMA

GMAC AHB

UM0851 데이터시트(PDF) 44 Page - STMicroelectronics

UM0851 데이터시트(HTML) 44 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

데이터시트 다운로드

링크 URL