HBLXT9785HC.A4 Intel, HBLXT9785HC.A4 Datasheet - Page 154
![no-image](/images/manufacturer_photos/0/3/336/intel_sml.jpg)
HBLXT9785HC.A4
Manufacturer Part Number
HBLXT9785HC.A4
Description
Manufacturer
Intel
Datasheet
1.HBLXT9785HC.A4.pdf
(234 pages)
Specifications of HBLXT9785HC.A4
Lead Free Status / RoHS Status
Not Compliant
- Current page: 154 of 234
- Download datasheet (4Mb)
154
LXT9785 and LXT9785E Advanced 8-Port 10/100 Mbps PHY Transceivers
4.11.5
Table 47. Next Page Message #5 Code Word Definitions
associated with message code #5 (Organizationally Unique Identifier (OUI) Tag Code). The
definition for the next pages to be sent out for this message code include some user-defined code
values. These values are loaded with randomly created data from an internal LSFR that is free
running and seeded with the PHY address of the LXT9785E port. The Next Pages are hard coded
in the logic (the LXT9785E ignores any data written into Register 7) and are outlined in
The receiver monitors the next pages to determine that the exact next page data (especially the
random data) transmitted is received. As soon as the first non-matching next page is detected, the
DTE Discovery process is stopped and the base page is used to determine the capability options.
The Power-Enable Register bit 27.4 is set when a Remote-Power DTE is detected as the link
partner, and the last next page is repeatedly transmitted until software restarts the required
negotiation process (auto-negotiation or forced-speed mode).
The software should be written so that the negotiation is not restarted until the DTE has been
powered up over the Category 5 cable. The Power-Enable Register bit 27.4 is cleared upon
restarting or disabling auto-negotiation (selecting forced mode). The system must be able to detect
over-current conditions and be capable of disabling power in case the link partner is not a Remote-
Power DTE. Some examples of devices that would mistakenly set Power-Enable Register bit 27.4
are a token-ring balun and a loopback cable. Once link partner power has been stabilized and
sufficient time has passed for the link partner to initialize, the auto-negotiation process may be
restarted.
The negotiation process establishes link if a compatible mode exists between the LXT9785E and
the link partner. If a compatible mode does not exist (not compatible or not established within the
Link Fail Inhibit Timer period), the LXT9785E either restarts auto-negotiation/DTE discovery
(discovery is enabled (27.6=1) and auto-negotiation is enabled (0.12 = 1)), or normal negotiation
(discovery is disabled (27.6=0) and auto-negotiation is enabled (0.12 = 1)), or either 10 Mbps or
100 Mbps forced-mode operation (auto-negotiation is disabled (0.12 = 0)). The software must
detect this non-link state and disable power.
DTE Discovery Behavior
The device behavior checks the comparison bit after each next page is successfully auto-
negotiated. If the first next page or any subsequent next page does not match, the DTE Discovery
process transmits one last null page with the next page bit cleared to stop the DTE Discovery
Next Page
User Page
User Page
User Page
User Page
Encoding
1. a is the acknowledge bit; t is the toggle bit; L is the LFSR
Message
Tagged
OUI
1
2
3
4
D15 D14 D13 D12 D11 D10
1
1
1
1
1
a
a
a
a
a
1
0
0
0
0
0
0
0
0
0
t
t
t
t
t
3.10 3.11 3.12 3.13 3.14 3.15
L.10
2.5
0
0
2.6
L.9
D9
0
0
2.7
L.8
L.8
D8
0
D7
2.8
L.7
L.7
0
2.9
L.6
L.6
D6
0
2.10 2.11 2.12 2.13 2.14 2.15
L.5
L.5
D5
0
D4
2.0
L.4
L.4
0
Revision Date: 30-May-2006
Document Number: 249241
2.1
L.3
L.3
D3
0
Revision Number: 010
2.2
L.2
L.2
D2
1
Datasheet
Table
D1
2.3
L.1
L.1
0
47.
2.4
L.0
L.0
D0
1
Related parts for HBLXT9785HC.A4
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
![RJ80535VC600512](/images/manufacturer_photos/0/3/337/intel_corporation_tmb.jpg)
Part Number:
Description:
Microprocessor: Intel Celeron M Processor 320 and Ultra Low Voltage Intel Celeron M Processor at 600MHz
Manufacturer:
Intel Corporation
![82550GY](/images/manufacturer_photos/0/3/337/intel_corporation_tmb.jpg)
Part Number:
Description:
Intel 82550 Fast Ethernet Multifunction PCI/CardBus Controller
Manufacturer:
Intel Corporation
Datasheet:
![DA28F320J5-120](/images/manufacturer_photos/0/3/337/intel_corporation_tmb.jpg)
Part Number:
Description:
Intel StrataFlash memory 32 Mbit. Access speed 120 ns
Manufacturer:
Intel Corporation
Datasheet:
![E28F320J5-120](/images/manufacturer_photos/0/3/337/intel_corporation_tmb.jpg)
Part Number:
Description:
Intel StrataFlash memory 32 Mbit. Access speed 120 ns
Manufacturer:
Intel Corporation
Datasheet:
![G28F640J5-150](/images/manufacturer_photos/0/3/337/intel_corporation_tmb.jpg)
Part Number:
Description:
Intel StrataFlash memory 64 Mbit. Access speed 150 ns
Manufacturer:
Intel Corporation
Datasheet:
![E28F320J5-100](/images/manufacturer_photos/0/3/337/intel_corporation_tmb.jpg)
Part Number:
Description:
Intel StrataFlash memory 32 Mbit. Access speed 100 ns
Manufacturer:
Intel Corporation
Datasheet:
![DA28F640J5A-150](/images/manufacturer_photos/0/3/337/intel_corporation_tmb.jpg)
Part Number:
Description:
DA28F640J5A-1505 Volt Intel StrataFlash Memory
Manufacturer:
Intel Corporation
Datasheet:
![DA28F320J5A-120](/images/manufacturer_photos/0/3/337/intel_corporation_tmb.jpg)
Part Number:
Description:
5 Volt Intel StrataFlash?? Memory
Manufacturer:
Intel Corporation
Datasheet:
![E28F320J5A-120](/images/manufacturer_photos/0/3/337/intel_corporation_tmb.jpg)
Part Number:
Description:
5 Volt Intel StrataFlash?? Memory
Manufacturer:
Intel Corporation
![NHE6300ESB](/images/manufacturer_photos/0/3/337/intel_corporation_tmb.jpg)
Part Number:
Description:
Intel 6300ESB I/O Controller Hub
Manufacturer:
Intel Corporation
Datasheet:
![NH82801DB](/images/manufacturer_photos/0/3/337/intel_corporation_tmb.jpg)
Part Number:
Description:
Intel 82801DB I/O Controller Hub (ICH4), Pb-Free SLI
Manufacturer:
Intel Corporation
Datasheet:
![FW82801FB](/images/manufacturer_photos/0/3/337/intel_corporation_tmb.jpg)
Part Number:
Description:
Intel 82801FB I/O Controller Hub (ICH6)
Manufacturer:
Intel Corporation
Datasheet:
![28F640J3A120](/images/manufacturer_photos/0/3/337/intel_corporation_tmb.jpg)
Part Number:
Description:
Intel Strataflash Memory28F128J3 28F640J3 28F320J3
Manufacturer:
Intel Corporation
Datasheet:
![FW82439TX](/images/manufacturer_photos/0/3/337/intel_corporation_tmb.jpg)
Part Number:
Description:
Controllers, Intel 430TX PCIset: 82439TX System Controller (MTXC)
Manufacturer:
Intel Corporation