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5220-DS02-R 数据表(PDF) 73 Page - Broadcom Corporation.

部件名 5220-DS02-R
功能描述  10/100BASE-TX/FX Mini Transceiver
PDF  90 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  BOARDCOM [Broadcom Corporation.]
网页  http://www.broadcom.com
标志 BOARDCOM - Broadcom Corporation.

5220-DS02-R 数据表(HTML) 73 Page - Broadcom Corporation.

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Preliminary Data Sheet
BCM5220
04/20/04
Broa d c om Co rp o r a t i o n
Document
5220-DS04-405-R
Auxiliary Status 4 Register (Shadow Register)
Page 61
Figure 6: MII Receive Start of Packet Timing (100BASE-TX)
Table 40: MII 100BASE-X Receive Timing
Parameter
Symbol
Min
Typ
Max
Unit
RXC Cycle Time
40
ns
RXC High/Low Time (RXDV asserted)
20
ns
RXC High Time (RXDV deasserted)
20
ns
RXC Low Time (RXDV deasserted)
20
ns
RXC Rise/Fall Time
2
5
ns
RXDV, RXER, RXD[3:0] Delay from RXC falling
-4
4
ns
CRS Deassert from RXC falling (valid EOP only)
1
ns
CRS Assert after RD
±
RX_CRS
130
ns
CRS Deassert after RD
± (valid EOP)
RX_CRS_EOP
170
ns
CRS Deassert after RD
± (premature end)
RX_CRS_IDLE
165
ns
RXDV Assert after RD
±
RX_RXDV
165
ns
RXDV Deassert after RD
± (valid EOP)
RX_RXDV_EOP
170
ns
RXDV Assert after CRS
40
ns
RD
± to RXD Steady State Delay
RX_RXD
170
ns
COL Assert after RD
± (while TX)
RX_COL
125
ns
COL Deassert after RD
± (valid EOP)
RX_COL_EOP
175
ns
COL Deassert after RD
± (premature end)
RX_COL_IDLE
165
ns
Note: RXC minimum high and low times are guaranteed when RXEN is asserted or deasserted. The MII port will always
tristate while RXEN is low.
RX_CRS
RX_COL
3RD DATA
SSD
RX_RXDV
NIBBLE
* When transmit is active
J4 J3 J2
K4 K3 K2 K1 K0
J1 J0
II
II
I
I
I
0
5
COL*
RXDV
RXD,
RD
±
RXC
CRS
RXER
RXC_MAX_HI
RXC_MAX_LO



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