
Datasheet 
Document Number: 249241
Revision Number: 007
Revision Date: August 28, 2003
13
Contents
Revision Number: 006 (INTERNAL RELEASE)
Revision Date: June 10, 2003
Page
Description
1
Changed "pseudo-ECL (PECL)" to "Low Voltage Positive Emitter Coupled Logic (LVPECL)" in the 
second paragraph, front page.
36
Modified 
Table 5 “Intel LXT9785/LXT9785E RMII Signal Descriptions – PQFP”
. Added last 
sentence to RXER0 through RXER7 signal description.
42
Modified 
Table 10 “Intel LXT9785/LXT9785E Signal Detect – PQFP”
.
42
Modified 
Table 11 “Intel LXT9785/LXT9785E Network Interface Signal Descriptions – PQFP”
,
43
Modified 
Table 13 “Intel LXT9785/LXT9785E Miscellaneous Signal Descriptions – PQFP”
. Added 
note to PREASEL signal description.
116
Modified 
Section 4.1, “Introduction”
. Changed "Pseudo-ECL (PECL)" to "Low Voltage PECL 
(LVPECL)" in the first paragraph, second sentence.
119
Replace text under 
Section 4.2.1.3, “Fiber Interface”
.
120
Modified 
Section 4.3.2, “Internal Loopback”
.
130
Modified last sentence under 
Section 4.6.1.4, “Link Criteria”
.
131
Modified text under 
Section 4.6.1.5, “Parallel Detection”
. Added second paragraph.
136
Modified text under 
Section 4.7.4.3, “Receive Error”
.
145
Changed "PECL" to "LVPECL in third paragraph, first sentence under 
Section 4.9.1, “100BASE-X 
Network Operations”
.
Modified
Figure 28 “Intel LXT9785/LXT9785E Protocol Sublayers”
.
146
148
Modified 
Section 4.9.3.3, “Carrier Sense/Data Valid (RMII)”
. Changed “asynchronously to 
“synchronously.”
148
Modified text under 
Section 4.9.3.4, “Carrier Sense (SMII)”
. Revised last sentence in first paragraph.
149
Modified paragraph under 
Section 4.9.3.6.3, “Polarity Correction”
.
149
Replaced text under 
Section 4.9.3.7, “Fiber PMD Sublayer”
.
150
Modified 
Section 4.10.1, “Preamble Handling”
. Added text to last paragraph.
151
Modified first sentence under 
Section 4.10.4, “Jabber”
.
152
Modified first paragraph of 
Section 4.11, “DTE Discovery Process”
.
153
Modified Item 1 of 
Section 4.11.2, “Interaction between Processor, MAC, and PHY”
.
158
Modified 
Section 4.12.3, “Out-of-Band Signaling”
. Added sentence to end of first paragraph.
166
Replaced text under 
Section 5.2.5, “The Fiber Interface”
.
170
Replaced 
Figure 36 “Recommended Intel LXT9785/LXT9785E-to-3.3 V Fiber Transceiver 
Interface Circuitry”
.
171
Replaced 
Figure 37 “Recommended Intel LXT9785/LXT9785E-to-5 V Fiber Transceiver Interface 
Circuitry”
.
173
Modified 
Table 52 “Intel LXT9785/LXT9785E Operating Conditions”
.
174
Modified 
Table 53 “Intel LXT9785/LXT9785E Digital I/O DC Electrical Characteristics (VCCIO = 
2.5 V +/- 5%)”
.
175
Modified 
Table 54 “Intel LXT9785/LXT9785E Digital I/O DC Electrical Characteristics (VCCIO = 
3.3 V +/- 5%)”
.
175
Added 
Table 55 “Intel LXT9785/LXT9785E Digital I/O DC Electrical Characteristics – SD Pins”
.
176
Modified 
Table 58 “Intel LXT9785/LXT9785E 100BASE-FX Transceiver Characteristics”
.