5220-DS02-R datasheet(72/90 Pages) BOARDCOM

72 / 90 page

BCM5220

Preliminary Data Sheet

04/20/04

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

Page 60

Auxiliary Status 4 Register (Shadow Register)

Document

5220-DS04-405-R

Figure 4: MII Transmit Start of Packet Timing (100BASE-TX)

Figure 5: MII Transmit End of Packet Timing (100BASE-TX)

Table 40 below provides 10BASE-X receive timing parameters. See Figure 6 on page 61 and Figure 7 on page 62 for

illustrations of 100BASE-TX receive start of packet timing parameters and 100BASE-TX receive end of packet timing.

Figure 8 on page 62 shows 100BASE-TX receive packet premature end. See Figure 9 on page 63 for an illustration of link

failure or stream cipher error during receive packet. 100BASE-TX False carrier sense timing is shown in

Figure 10 on page 63.

TX_TDATA

TXEN_CRS

TXEN_COL

TXD_TDATA

SSD

3RD DATA

NIBBLE

COL

* When receive is concurrently active

J4 J3 J2

K4 K3 K2 K1 K0

CRS

TXER

TXEN

TXD,

TXEN_SETUP

TXEN_HOLD

XTALI

TXC

ESD

TXEN_CRS_EOP

TXEN_COL_EOP

LAST DATA

DATA N

T4 T3 T2 T1 T0 R4 R3 R2 R1 R0

NIBBLE

TXD,

TXER

COL

TXEN

CRS

XTALI

TXC

5220-DS02-R Datasheet(PDF) 72 Page - Broadcom Corporation.

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