HBLXT9785HC.A4 Intel, HBLXT9785HC.A4 Datasheet - Page 201
HBLXT9785HC.A4
Manufacturer Part Number
HBLXT9785HC.A4
Description
Manufacturer
Intel
Datasheet
1.HBLXT9785HC.A4.pdf
(234 pages)
Specifications of HBLXT9785HC.A4
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Datasheet
Document Number: 249241
Revision Number: 010
Revision Date: 30-May-2006
Table 83. Control Register (Address 0) (Sheet 2 of 2)
Table 84. Status Register (Address 1)
1. R/W = Read/Write, SC = Self Clearing when operation complete.
2. During a hardware reset, all LHR information is latched in from the pins. During a software reset (0.15), the
3. LSHR = Default value is derived from a single device input pin state or a group of device input pin states as
4. Default value of Register bits 0.12, 0.13, and 0.8 are determined by the CFG pins as described in
5. Default value of Register bit 0.11 is determined by the LINKHOLD configuration pin.
6. Link Status is reported in 10 Mbps mode as down and in 100 Mbps mode as up in loopback mode.
1. R = Read Only
2. Bits that Latch High (LH) or Latch Low (LL) automatically clear when read.
Bit
5:0
Bit
15
14
13
12
11
10
7
6
9
8
7
LSHR information is not re-read from the pins. This information reverts back to the information that was
read in during the hardware reset. During a hardware rest, register information is unavailable from 1 ms
after de-assertion of the reset. During a software reset (0.15) the registers are available for reading. The
reset bit should be polled to see when the part has completed reset.
the pin(s) are latched at startup or hardware reset.
“Global Hardware Configuration Settings” on page
Register bits 17.12 (Receive Status) and 17.13 (Transmit Status) are not updated in 10 Mbps loopback
mode.
Name
100BASE-T4
100BASE-X
Full-Duplex
100BASE-X
Half-Duplex
10 Mbps Full-Duplex
10 Mbps Half-Duplex
100BASE-T2
Full-Duplex
100BASE-T2
Half-Duplex
Extended Status
Reserved
Name
Collision Test
Speed Selection
1000 Mbps
Reserved
LXT9785 and LXT9785E Advanced 8-Port 10/100 Mbps PHY Transceivers
Description
0 = PHY not able to perform 100BASE-T4
1 = PHY able to perform 100BASE-T4
0 = PHY not able to perform full-duplex 100BASE-X
1 = PHY able to perform full-duplex 100BASE-X
0 = PHY not able to perform half-duplex 100BASE-X
1 = PHY able to perform half-duplex 100BASE-X
0 = PHY not able to operate at 10 Mbps in full-duplex
1 = PHY able to operate at 10 Mbps in full-duplex
0 = PHY not able to operate at 10 Mbps in half-duplex
1 = PHY able to operate at 10 Mbps in half-duplex
0 = PHY not able to perform full-duplex 100BASE-T2
1 = PHY able to perform full-duplex 100BASE-T2
0 = PHY not able to perform half-duplex 100BASE-T2
1 = PHY able to perform half-duplex 100BASE-T2
0 = No extended status information in Register 15
1 = Extended status information in Register 15
Write as 0, ignore on Read
Description
This bit is ignored by the LXT9785/LXT9785E
0 = Disable COL signal test
1 = Enable COL signal test
0.6
Write as 0, ignore on Read
1
1
0
0
mode
mode
mode
0.13
1 = Reserved
0 = 1000 Mbps (not allowed)
1 = 100 Mbps
0 = 10 Mbps
128.
Type
R/W
R/W
R/W
Type
R
R
R
R
R
R
R
R
R
1
1,2
Table 42,
Default
000000
Default
0
0
0
1
1
1
1
0
0
0
0
201
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