lxt9785 Intel Corporation, lxt9785 Datasheet - Page 47

• Manufacturer Part Number: lxt9785
• Description: Advanced 8-port 10/100 Mbps Phy Transceivers
• Manufacturer: Intel Corporation

Datasheet
Document Number: 249241
Revision Number: 007
Revision Date: August 28, 2003
Table 15. Intel
1. Type Column Coding: I = Input, O = Output, OD = Open Drain output, ST = Schmitt Triggered input, TS =
38, 48, 57,
109, 123,
9, 19, 30,
120, 126,
135, 141,
106, 112,
113, 127,
138, 152
183, 195
199, 207
149, 155
134, 148
74, 188,
99, 163
Pin/Ball Designation
66, 79,
PQFP
Three-State-able output, SL = Slew-rate Limited output, IP = weak Internal Pull-up, ID = weak Internal pull-
Down.
179
®
LXT9785/LXT9785E Power Supply Signal Descriptions – PQFP (Sheet 2 of 2)
LXT9785 and LXT9785E Advanced 8-Port 10/100 Mbps PHY Transceivers
D10, D15,
R15, R17,
U10, U12,
U14, U16,
E13, E17,
C5, C13,
C17, D1,
H9, H10,
M5, M13
P13, R7,
P14, R1,
N9, N11,
E9, E11,
F13, H8,
R9, R11,
T17, U2,
J10, K8,
R13, U8
K9, K10
N6, N7,
D3, D6,
R3, R5,
U4, U6,
A1, A9,
B3, B7,
E5, E7,
P5, P6,
PBGA
J8, J9,
N12
U17
K14
GNDPECL
Symbol
GNDIO
GNDD
GNDR
SGND
VCCT
GNDT
Type
-
-
-
-
-
-
-
Signal Description
Analog Power Supply - Transmit.
+2.5 V supply for all analog transmit circuits.
Digital Ground.
Ground return for core digital supplies (VCCD). All
ground pins can be tied together using a single ground
plane.
Digital GND - I/O Ring.
Ground return for digital I/O circuits (VCCIO).
Digital GND - PECL Signal Detect Inputs.
Ground return for PECL Signal Detect input circuits.
Analog Ground - Receive.
Ground return for receive analog supply. All ground
pins can be tied together using a single ground plane.
Analog Ground - Transmit.
Ground return for transmit analog supply. All ground
pins can be tied together using a single ground plane.
Substrate Ground.
Ground for chip substrate. All ground pins can be tied
together using a single ground plane.
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