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AC104X-DS00-R Datasheet(PDF) 32 Page - Broadcom Corporation.

Part # AC104X-DS00-R
Description  2.5V 4-Port 10/100-TX Ethernet Transceiver
PDF  50 Pages
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Manufacturer  BOARDCOM [Broadcom Corporation.]
Direct Link  http://www.broadcom.com
Logo BOARDCOM - Broadcom Corporation.

AC104X-DS00-R Datasheet(HTML) 32 Page - Broadcom Corporation.

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■ AC104X
Preliminary Data Sheet
12/11/01
B roa dcom Co rpo rat ion
Page 24 Section 3: Register Descriptions
Document
AC104X-DS00-405-R
Table 23:
Register 19: Test Register
Bit
Name
Description
Mode
Default
19.[15:9]
Reserved
Reserved.
RW
00
19.8
Tx_fef
1 = Force FEF transmit.
RW
0
19.7
Error counter full
1 = Error count full. When set indicates the rx_error counter
full in the receiver circuit. This event will cause de-scrambler
to reset.
RC
0
19.6
Err cnt disable
1 = disable error counter in the receiver module.
RW
0
19.5
Disable watch dog
timer for decipher
1 = Disable watch dog timer.
0 = Enable watch dog timer.
RW
0
19.4
Low Power Mode
disable
1 = Disable advanced power saving mode.
0 = Enable advanced power saving mode.
RW
0
19.3
Enable digital
loopback
1 = enable digital loop back.
RW
0
19.2
Test loop back
1 = enable analog test loop back.
RW
0
19.1
Remote loop back
1 = enable analog remote loop back.
RW
0
19.0
Jabber disable
1 = disable jabber.
RW
0
Table 24:
Register 20: Cable Measurement Capability
Bit
Name
Description
Mode
Default
20.15
Reserved
RW
1
20.14
Reserved
RW
1
20.[13:9]
Reserved
RO
0
20.8
Adaption Disable
1 = Disable adaption.
RW
0
20.[7:4]
Cable
Measurement
Capability
These bits can be used as cable length indicator. The bits are
incremented from 0000 to 1111, with an increment of
approximately 10 meters. The equivalent is 0 to 32 dB with
an increment of 2 dB @ 100 MHz. The value is a read back
from the equalizer, and the measured value is not absolute.
These bits are only applicable to the 100BASE-TX mode.
RW
X
20.[3:0]
Adaption Low
Limit Value
Adaption setting, when the SD signal is first detected.
RO
X



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