LXT9785 and LXT9785E Advanced 8-Port 10/100 Mbps PHY Transceivers
48
Datasheet
Document Number: 249241
Revision Number: 007
Revision Date: August 28, 2003
185
186
187
J15,
J16,
H17
LED5_1
LED5_2
LED5_3
OD, TS, SL,
IP
Port 5 LED Drivers 1-3.
These pins drive LED indicators for Port 5. Each LED
can display one of several available status conditions
as selected by the LED Configuration Register (refer
to
Table 96, “LED Configuration Register (Address
20, Hex 14)” on page 213
for details).
189
190
191
H15,
H16,
G17
LED6_1
LED6_2
LED6_3
OD, TS, SL,
IP
Port 6 LED Drivers 1-3.
These pins drive LED indicators for Port 6. Each LED
can display one of several available status conditions
as selected by the LED Configuration Register (refer
to
Table 96, “LED Configuration Register (Address
20, Hex 14)” on page 213
for details).
192
193
194
G15,
F17,
F16
LED7_1
LED7_2
LED7_3
OD, TS, SL,
IP
Port 7 LED Drivers 1-3.
These pins drive LED indicators for Port 7. Each LED
can display one of several available status conditions
as selected by the LED Configuration Register (refer
to
Table 96, “LED Configuration Register (Address
20, Hex 14)” on page 213
for details).
Table 15. Intel
LXT9785/LXT9785E Power Supply Signal Descriptions – PQFP (Sheet 1 of 2)
Pin/Ball Designation
Symbol
Type
Signal Description
PQFP
PBGA
65, 78, 184,
196
G13, J14,
F5, J5
VCCD
-
Digital Power Supply - Core.
+2.5 V supply for core digital circuits.
18, 29, 47,
56, 208
A2, A8,
C1, C11,
VCCIO
-
Digital Power Supply - I/O Ring.
+2.5/3.3 V supply for digital I/O circuits. The digital
input circuits running off of this rail, having a TTL-level
threshold and over-voltage protection, may be
interfaced with 3.3/5.0 V, when the IO supply is 3.3 V,
and 2.5/3.3/5.0 V when 2.5 V.
98, 164
L13, L5
VCCPECL
-
Digital Power Supply - PECL Signal Detect Inputs.
+2.5/3.3 V supply for PECL Signal Detect input
circuits. If Fiber Mode is not used, tie these pins to
GNDPECL to save power.
103, 116,
117, 130,
131, 144,
145, 158
N13, P4,
P7, P8,
P9, P10,
P11, P12
VCCR
-
Analog Power Supply - Receive.
+2.5 V supply for all analog receive circuits.
1. Type Column Coding: I = Input, O = Output, OD = Open Drain output, ST = Schmitt Triggered input, TS =
Three-State-able output, SL = Slew-rate Limited output, IP = weak Internal Pull-up, ID = weak Internal pull-
Down.
Table 14. Intel
LXT9785/LXT9785E LED Signal Descriptions – PQFP (Sheet 2 of 2)
Pin/Ball
Designation
Symbol
Type
1
Signal Description
2,3
PQFP
PBGA
1. Type Column Coding: I = Input, O = Output, OD = Open Drain output, ST = Schmitt Triggered input, TS =
Three-State-able output, SL = Slew-rate Limited output, IP = weak Internal Pull-up, ID = weak Internal pull-
Down.
2. The IP/ID resistors are disabled during H/W Power-Down mode. If a pin is an output or an I/O, the IP/ID
resistors are also disabled when the output is enabled.
3. The LED outputs are three-stated in H/W Power-Down mode and during H/W reset.
4.