BCM5208KPF Broadcom, BCM5208KPF Datasheet - Page 39

• 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
AUXILIARY MODE 2 REGISTER
The bit descriptions for auxiliary mode 2 register are shown in Table 22.
BLOCK 10BASE-T ECHO MODE. Default 0. When enabled, during 10BASE-T half-duplex transmit operation, the TXEN
signal will not echo onto the RXDV pin. The TXEN will echo onto the CRS pin, and the CRS deassertion directly follow the
TXEN deassertion.
TRAFFIC METER LED MODE. Default 0. When asserted, the Receive and Transmit (Activity) LEDs (XMTLED# and
RCVLED# pins) will not blink based on the internal LED-CLK (approximately 80ms ON time). Instead, they will blink based
on the rate of Receive and Transmit activity. Each time a Receive or a Transmit operation occurs, the respective LED will
turn on for a minimum of 5ms. With light traffic, the LEDs will blink at a low rate. During medium to heavy traffic (packets
within 5ms of each other), the LEDs will remain on.
ACTIVITY LED FORCE ON. Default 0. When asserted, the Receive and Transmit (Activity) LEDs (XMTLED# and
RCVLED# pins) will be turned on. When 0, will have no affect on the Activity LEDs. The Activity Force ON bit has higher
priority than Activity LED Force Inactive, bit 4, Register 1Dh.
SERIAL LED MODE. Default 0. When asserted, the 4 slices’ LED outputs will be serially shifted out on the 2nd slices’ LED
outputs.The sequence of outputs for the different Serial modes are: FDX, Global Interrupt, Speed, Link, Slice Interrupt,
Activity when the Interrupt mode is set; FDX, '1', Speed, Link, FDX, Activity when the FDXLED mode is set and, FDX, '1',
Speed, Link, Transmit, Receive when neither Interrupt nor FDXLED modes are selected. When this bit is 0, the four LED
outputs per slice will be operated in parallel. See Table 3 and refer to the Functional Description section for more details.
SQE DISABLE MODE. Default 0. When asserted, will disable SQE pulses when operating in 10BASE-T half-duplex mode.
QUALIFIED PARALLEL DETECT MODE. This bit allows the Auto-Negotiation/Parallel Detection process to be qualified
with information in the Advertisement Register. Default value is 0.
If this bit is not set, and the local BCM5208 device is enabled to Auto-Negotiate and the far-end device is a 10BASE-T or
100BASE-TX non-Auto-Negotiating legacy type, the local device will Auto-Negotiate/Parallel detect the far-end device,
regardless of the contents of its Advertisement Register, 04h.
If this bit is set, the local device will compare the link speed detected to the contents of its Advertisement Register. If the
particular link speed is enabled in the Advertisement register, the local device will assert link. If the link speed is disabled
in this register, then the local device will not assert link and will continue monitoring for a matching capability link speed.
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BIT
15:8
7
6
5
4
3
2
1
0
Reserved
Block 10BASE-T Echo Mode
Traffic Meter LED Mode
Activity LED Force ON
Serial LED Mode
SQE Disable Mode
Reserved
Qual Parallel Detect Mode
Reserved
NAME
Table 22: Auxiliary Mode 2 (Address 27d, 1Bh)
R/W
RO
R/W
R/W
R/W
R/W
R/W
RO
R/W
RO
B r o a d c o m C o r p o r a t i o n
DESCRIPTION
Ignore when Read
1=10BASE-T half-duplex TXEN won’t echo onto
RXDV
0=10BASE-T half-duplex TXEN will echo onto RXDV
1=Traffic Meter LED Mode ON
0=Traffic Meter LED Mode OFF
1=Activity LEDs Forced ON
0=Activity LEDs not Forced
1=Serial LED Mode enabled
0=Serial LED Mode disabled
1=SQE not transmitted in 10BASE-T half-duplex
0=SQE transmitted in 10BASE-T half-duplex
Ignore when Read
1=Parallel Detect Qualification Mode ON
0=Parallel Detect Qualification Mode OFF
Ignore when Read
n BCM5208
DEFAULT
FFh
0
0
0
0
0
0
0
0
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