BCM5208KPF Broadcom, BCM5208KPF Datasheet - Page 47

• Manufacturer Part Number: BCM5208KPF
• Manufacturer: Broadcom

Specifications of BCM5208KPF

• Number Of Receivers: 4
• Data Rate: 10/100Mbps
• Operating Temperature Classification: Commercial
• Operating Supply Voltage (min): 3.14V
• Mounting: Surface Mount
• Operating Temperature (max): 70C
• Operating Temperature (min): 0C
• Lead Free Status / RoHS Status: Not Compliant

November 3, 1999
Figure 31 provides the parameters for 100BASE-X receive timing. Figure 6 illustrates 100BASE-TX receive start of packet
timing and Figure 7 shows 100BASE-TX receive end of packet timing. Figure 8 shows 100BASE-TX receive packet
premature end. Figure 9 illustrates link failure or stream cipher error during receive packet. False carrier sense timing is
shown in Figure 10.
Document 5208-DS03-R¥¥¥¥¥
PARAMETER
RXC Cycle Time
RXC High/Low Time (RXDV asserted)
RXC High Time (RXDV deasserted)
RXC Low Time (RXDV deasserted)
RXC Rise/Fall Time
RXDV, RXER, RXD[3:0] Delay from RXC falling
CRS Deassert from RXC falling (valid EOP only)
CRS Assert after RD±
CRS Deassert after RD± (valid EOP)
CRS Deassert after RD± (premature end)
RXDV Assert after RD±
RXDV Deassert after RD±
RXDV Assert after CRS
RD± to RXD Steady State Delay
COL Assert after RD± (while TX)
COL Deassert after RD± (valid EOP)
COL Deassert after RD± (premature end)
RXEN high to RXC, RXDV, RXER, RXD[3:0] Delay
RXC, RXDV, RXER, RXD[3:0] high-Z from RXEN low
Note: RXC minimum high and low times are guaranteed when RXEN is asserted or deasserted. The MII port will always
tri-state while RXC is low.
Table 31: 100BASE-X Receive Timing
B r o a d c o m C o r p o r a t i o n
SYMBOL
RX_CRS
RX_RXDV
RX_RXDV_EOP
RX_CRS_EOP
RX_CRS_IDLE
RX_RXD
RX_COL
RX_COL_EOP
RX_COL_IDLE
MIN
39.5
130
170
130
130
150
130
170
18
18
18
90
35
90
20
-3
-3
2
0
TYP
40
20
20
20
–
–
–
–
–
–
–
–
–
–
–
–
–
MAX
40.5
120
160
200
160
160
180
120
160
200
22
54
38
45
50
70
5
3
3
n BCM5208
UNIT
Page 39
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns