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DP83848Q-Q1 Datasheet(PDF) 10 Page - Texas Instruments

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Part # DP83848Q-Q1
Description  MII Serial Management Interface
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

DP83848Q-Q1 Datasheet(HTML) 10 Page - Texas Instruments

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DP83848Q-Q1
SNLS341C – MARCH 2011 – REVISED MARCH 2015
www.ti.com
3.9
10 Mb/s and 100 Mb/s PMD Interface
SIGNAL NAME
TYPE
PIN
DESCRIPTION
NO.
TD-, TD+
I/O
14
Differential common driver transmit output (PMD Output Pair). These differential outputs
15
are automatically configured to either 10BASE-T or 100BASE-TX signaling.
IIn Auto-MDIX mode of operation, this pair can be used as the Receive Input pair.
These pins require 3.3V bias for operation.
RD-, RD+
I/O
11
Differential receive input (PMD Input Pair). These differential inputs are automatically
12
configured to accept either 100BASE-TX or 10BASE-T signaling.
In Auto-MDIX mode of operation, this pair can be used as the Transmit Output pair.
These pins require 3.3V bias for operation.
3.10 Special Connections
SIGNAL NAME
TYPE
PIN NO.
DESCRIPTION
RBIAS
I
20
Bias Resistor Connection: A 4.87 k
Ω 1% resistor should be connected from RBIAS to
GND.
PFBOUT
O
19
Power Feedback Output: Parallel caps, 10µF (Tantalum preferred) and 0.1µF, should be
placed close to the PFBOUT. Connect this pin to PFBIN1 (pin 18) and PFBIN2 (pin 37). See
Section 6.2.1.3 for proper placement pin.
PFBIN1
I
16
Power Feedback Input: These pins are fed with power from PFBOUT pin. A small capacitor
PFBIN2
30
of 0.1µF should be connected close to each pin.
Note: Do not supply power to these pins other than from PFBOUT.
RESERVED
I/O
8, 9, 10
RESERVED: These pins must be left unconnected.
3.11 Power Supply Pins
SIGNAL NAME
PIN NO.
DESCRIPTION
IOVDD33
1, 26
I/O 3.3-V Supply
IOGND
40
I/O Ground
DGND
29
Digital Ground
AVDD33
18
Analog 3.3-V Supply
AGND
13, 17
Analog Ground
GNDPAD
DAP
No connect or connect to Ground(1)
(1)
Die Attach Pad (DAP) provides thermal dissipation. Connection to GND plane recommended.
10
Pin Configuration and Functions
Copyright © 2011–2015, Texas Instruments Incorporated
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