LXT9785 and LXT9785E Advanced 8-Port 10/100 Mbps PHY Transceivers
96
Datasheet
Document Number: 249241
Revision Number: 007
Revision Date: August 28, 2003
N6, N7,
N9, N11,
N12
109, 123,
138, 152
VCCT
-
Analog Power Supply - Transmit.
+2.5 V supply for all analog transmit circuits.
A1, A9,
B3, B7,
C5, C13,
C17, D1,
D3, D6,
D10, D15,
E5, E7,
E9, E11,
E13, E17,
F13, H8,
H9, H10,
J8, J9,
J10, K8,
K9, K10
66, 79,
183, 195
GNDD
-
Digital Ground.
Ground return for core digital supplies (VCCD). All
ground pins can be tied together using a single ground
plane.
9, 19, 30,
38, 48, 57,
74, 188,
199, 207
GNDIO
-
Digital GND - I/O Ring.
Ground return for digital I/O circuits (VCCIO).
M5, M13
99, 163
GNDPECL
-
Digital GND - PECL Signal Detect Inputs.
Ground return for PECL Signal Detect input circuits.
P5, P6,
P13, R7,
R9, R11,
R13, U8
106, 112,
120, 126,
135, 141,
149, 155
GNDR
-
Analog Ground - Receive.
Ground return for receive analog supply. All ground
pins can be tied together using a single ground plane.
P14, R1,
R3, R5,
R15, R17,
T17, U2,
U4, U6,
U10, U12,
U14, U16,
U17
113, 127,
134, 148
GNDT
-
Analog Ground - Transmit.
Ground return for transmit analog supply. All ground
pins can be tied together using a single ground plane.
K14
179
SGND
-
Substrate Ground.
Ground for chip substrate. All ground pins can be tied
together using a single ground plane.
Table 34. Intel
LXT9785/LXT9785E Power Supply Signal Descriptions – BGA23 (Sheet 2 of 2)
Ball/Pin Designation
Symbol
Type
Signal Description
BGA23
PQFP
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.