BCM5208KPF Broadcom, BCM5208KPF Datasheet - Page 36

• 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

n BCM5208
AUTO-NEGOTIATION INDICATOR. A read-only bit that indicates whether Auto-Negotiation has been enabled or disabled
on the BCM5208. A combination of a “1” in bit 12 of the Control Register and a logic “1” on the ANEN input pin is required
to enable Auto-Negotiation. When Auto-Negotiation is disabled, bit 3 of the Auxiliary Control Register returns a “0”. At all
other times, it returns a “1”.
FORCE100/10 INDICATION. A read-only bit that returns a value of “0” when one of following two cases is true:
1. The ANEN pin is low AND the F100 pin is low.
2. Bit 12 of the Control Register has been written “0” AND bit 13 of the Control Register has been written “0”. When bit 8 of
SPEED INDICATION. Bit 1 of the Auxiliary Control Register is a read-only bit that shows the true current operation speed
of the BCM5208. A “1” bit indicates 100BASE-X operation, while a “0” indicates 10BASE-T. Note that while the Auto-
Negotiation exchange is performed, the BCM5208 is always operating at 10BASE-T speed.
FULL-DUPLEX INDICATION. Bit 0 of the Auxiliary Control Register is a read-only bit that returns a “1” when the BCM5208
is in full-duplex mode. In all other modes, it returns a “0”.
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the Auxiliary Control Register is “0”, the speed of the chip will be 10BASE-T. In all other cases, either the speed is not
forced (Auto-Negotiation is enabled), or the speed is forced to 100BASE-X.
B r o a d c o m C o r p o r a t i o n
Document 5208-DS03-R¥¥¥¥¥
November 3, 1999