CS89712 datasheet(50/170 Pages) CIRRUS

tên linh kiện	CS89712

Giải thích chi tiết về linh kiện	HIGH-PERFORMANCE, LOW-POWER SYSTEM-ON-CHIP WITH 10BASE-T ETHERNET CONTROLLER

PDF	170 Pages

Scroll/Zoom	100%

nhà sản xuất	CIRRUS [Cirrus Logic]

Trang chủ	http://www.cirrus.com

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50 / 170 page

CS89712

DS502PP2

frame is pending and if the MAC is not in Backoff,

transmission begins the 9.6 µs IPG). If no transmit

packet is pending, the MAC continues to monitor

the network. If activity is detected before a transmit

frame is ready, the MAC defers to the transmitting

station and resumes monitoring the network. Fig-

ure 15 diagrams the simple deferral process.

2.26.5.4

Collision Resolution

If a collision is detected while the Ethernet port is

transmitting, the MAC responds in one of three

ways depending on whether it is a normal collision

(within the first 512 bits of transmission) or a late

collision (after the first 512 bits of transmission):

Transmit

Frame

Start Monitoring

Network Activity

IPG

Timer =

6.4

µs?

Network

Active?

Network

Active?

Start IPG

Timer

Network

Active?

Yes

Wait

3.2

µs

Yes

Frame

Ready

and Not

in Backoff?

Figure 14. Two-Part Deferral

Frame

Ready

and Not

in Backoff?

Transmit

Frame

Start Monitoring

Network Activity

Network

Active?

Network

Active?

Yes

Wait

9.6

µs

Figure 15. Simple Deferral

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