5228-DS05-R datasheet(84/100 Pages) BOARDCOM

Nome de Peças	5228-DS05-R

Descrição Electrónicos	10/100BASE-TX/FX Octal Transceiver

PDF	100 Pages

Scroll/Zoom	100%

Fabricante Electrônico	BOARDCOM [Broadcom Corporation.]

Página de início	http://www.broadcom.com

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84 / 100 page

BCM5228

Data Sheet

7/12/04

Broa d c om Co rp o r a t i o n

Page 72

Timing and AC Characteristics

Document

5228-DS09-405-R

Figure 7: RMII Receive Packet Timing

Figure 8: RMII Receive Packet with False Carrier

Table 53: SMII/S3MII Timing

Parameter

Symbol

Min

Typ

Max

Unit

STX (TXD) setup (SCLK rising)

STX_SETUP

1.5

–

STX (TXD) hold (SCLK rising)

STX_HOLD

1.0

–

SYNC (SSYNC) setup (SCLK rising)

SYNC_SETUP

1.5

–

SYNC (SSYNC) hold (SCLK rising)

SYNC_HOLD

1.0

–

SRX (RXD) delay (SCLK rising)

SRX_DELAY

2.0

–

5.0

SMII_RSYNC delay

SYNC_DELAY

2.0

–

5.0

Note: SCLK is REF_CLK in SMII mode

SCLK is SMII_TXC for S3MII STX

SCLK is SMII_RXC for S3MII SRX

/J/

/K/

Preamble

SFD

Data

00000

111111

XXXXX

RXD[1]

RXD[0]

CRS_DV

REF_CLK

000000

RXD[1]

RXD[0]

CRS_DV

REF_CLK

00000

111

111111

0000

False Carrier Detected

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