78Q2123-DB Maxim Integrated Products, 78Q2123-DB Datasheet

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78Q2123-DB

Manufacturer Part Number
78Q2123-DB
Description
BOARD DEMO 78Q2123 78Q2133
Manufacturer
Maxim Integrated Products
Datasheets
1.78Q2123F.pdf (38 pages)
2.78Q2123-DB.pdf (15 pages)

Specifications of 78Q2123-DB

Lead Free Status / RoHS Status
Lead free / RoHS Compliant
DESCRIPTION
The 78Q21x3-DB is a design example for a
10/100BASE-TX Mbit/second Fast Ethernet MII
Interface adaptor.
MicroPHY transceiver from Teridian provides the
network
Independent Interface) interface.
Teridian Semiconductor’s MicroPHY is an auto-
sensing,
Ethernet transceiver with full duplex operation
capability.
IEEE-802.3u
management functions are included along with an
extended register set. The MicroPHY five bit PHY
address is defaulted to 0x001.
interfaces to CAT5 UTP cable via a 1:1 transformer.
The transceiver’s transmitter includes on-chip the
pulse shaper and low power line driver.
receiver incorporates a sophisticated combination of
real-time adaptive equalization, an adaptive DC
offset adjustment circuit and baseline wander
correction. Smart squelch circuitry further improves
the receiver’s noise rejection. Full featured auto-
negotiation or parallel detect modes are supported.
The demo board requires operation with a +3.3V
power supply.
Design Kit contains:
√
√
√
√
√
© 2007 Teridian Semiconductor Corporation, Proprietary and Confidential
MicroPHY MII Demo Board
Demo Board Parts List
P.C.B. Gerber Files
Demo Board schematic
MicroPHY Data Sheet
physical
auto-switching
The device interfaces directly to the
MII
interface
port.
A 78Q2123 or 78Q2133
10/100BASE-TX
and
Full-featured
The MicroPHY
MII
(Medium
Fast
The
MII
Ordering Number
78Q21x3-DB
- 1 -
10/100Base-TX Interface
RJ45 Pin Assignment
Pin
1
2
3
4
MII:
Pin Assignment:
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Signal
TX+
TX-
RX+
N/C
Medium Independent Interface
(40 Pin Male Subminiature D, 0.050)
Signal
+3.3V
MDIO
MDC
RXD3
RXD2
RXD1
RXD0
RXDV
RXCLK
RXER
TXER
TXCLK
TXEN
TXD0
TXD1
TXD2
TXD3
COL
CRS
+3.3V
78Q21x3-DB MicroPHY
DEMO BOARD MANUAL
MII Evaluation Board
Description
MicroPHY MII Demo Board
Pin
5
6
7
8
Pin
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
Signal
N/C
RX-
N/C
N/C
Signal
+3.3V
COMMON
COMMON
COMMON
COMMON
COMMON
COMMON
COMMON
COMMON
COMMON
COMMON
COMMON
COMMON
COMMON
COMMON
COMMON
COMMON
COMMON
COMMON
+3.3V
April 2007
Rev_2.3
TM

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78Q2123-DB Summary of contents

Page 1

... DESCRIPTION The 78Q21x3- design example for a 10/100BASE-TX Mbit/second Fast Ethernet MII Interface adaptor. A 78Q2123 or 78Q2133 MicroPHY transceiver from Teridian provides the network physical interface and Independent Interface) interface. Teridian Semiconductor’s MicroPHY is an auto- sensing, auto-switching 10/100BASE-TX Ethernet transceiver with full duplex operation capability ...

Page 2

MII ADAPTOR WITH MICROPHY Use With the Netcom Smart-Bits The Netcom expects to be the master and defaults to 100BASE-TX Half-Duplex operation. Fast-Ether Windows may require the reconfiguration of the MicroPHY’s control register MR0 bits for similar operation. The MicroPHY ...

Page 3

Transformer Selection The line interface for the MicroPHY requires a pair of 1:1 isolation transformers. Integrated common-mode chokes are recommended for satisfying FCC radiated EMI requirements. Additional filtering is not required with the MicroPHY due to internal waveform shaping ...

Page 4

The following devices integrate the transformers, RJ45 connector, LEDs, and termination resistors. Vendor Part number J0011D21 J0011D21NL J0011D21B J0011D21BNL J0011D21E J0011D21ENL J0011D01 J0011D01NL Pulse J0011D01B J0011D01BNL J0012D21 J0012D21NL J1011F01P J1011F01PNL J1011F21P J1011F21PNL HFJ11-2450EURL HFJ11-2450EU-L11RL Down HFJ11-2450ERL Halo HFJ11-2450E-L11RL HFJT1-S003E-L11RL HFJT1-S003-L11RL ...

Page 5

Commercial Temperature Connectors (continued) Vendor Part number MIC24010-5101T-LF3 Down MIC24010-5104T-LF3 Down MIC24011-0101T MIC24011-0101T-LF3 Down MIC24011-0101W-LF3 Down MIC24011-0104T MIC24012-5101T-LF3 Down Wurth/Midcom MIC24012-5204T-LF3 Down MIC24013-5104T MIC24018-5101T-LF3 Down MIC24019-0101T MIC24111-0101T MIC24111-0101T-LF3 Up MIC24412-0128T-LF3 Up MIC24F11-0101T-LF3 Up LJ0004 Falco LJ0012 LJ1011 SI-10021 SI-60002-F SI-40139 ...

Page 6

Vendor Part number MIC24011-5108T-LF3 Down MIC24012-5117T-LF3 Down Wurth/Midcom MIC2401D-5217T-LF3 Down MIC24111-0108T MIC2411D-0117T-LF3 Up SI-10128 SI-60136-F BelFuse SI-40091 SI-60118-F * Notes: 1. The letters stand for different footprint drawings 2. Lower case is for the tab-down version. Upper case is for ...

Page 7

PCB Layout Considerations The following recommendations enhance the MicroPHY’s performance while minimizing EMC emissions: 1. The transformer to transceiver signal traces must be 100Ω differential transmission lines. 2. Place the termination network components near the input data pins of the ...

Page 8

... U1 VCC Optional ESD 33 Noise PB_GND 9 32 Suppression VCCD INTR 10 31 GNDD TXON 11 30 RX_DV TXOP 12 29 RX_CLK GND 13 78Q2123 28 RX_ER RXIP 14 27 TX_ER RXIN 15 26 TX_CLK VCC 16 25 TX_EN XTLN C14 C15 C16 10pF 10pF 10pF Q1 VCC 25.000MHz C2 C3 ...

Page 9

... C2,C3 3 C4,C12,C13 10 C6,C7,C8,C10,C11 © 2007 Teridian Semiconductor Corporation, Proprietary and Confidential DESCRIPTION PART NUMBER IC, 10/100Mbps LAN TSC 78Q2123 Transceiver RJ45, XFRM, LED, J0011D21B 10BaseT/100BaseTX with LEDs TLA-6T704 without LEDs CRYSTAL, 25.000MHZ ECCM1-25.000MHZ ECCM1 LED, Optional LU20125 RES, 100 RES, 680, Optional RES, 5 ...

Page 10

Teridian Semiconductor Corporation, Proprietary and Confidential DEMO BOARD MANUAL Top Silkscreen - 78Q21x3-DB MicroPHY MII Evaluation Board Rev_2.3 ...

Page 11

Teridian Semiconductor Corporation, Proprietary and Confidential 78Q21x3-DB MicroPHY DEMO BOARD MANUAL Top Layer - MII Evaluation Board Rev_2.3 ...

Page 12

Teridian Semiconductor Corporation, Proprietary and Confidential 78Q21x3-DB MicroPHY DEMO BOARD MANUAL VCC Layer - MII Evaluation Board Rev_2.3 ...

Page 13

Teridian Semiconductor Corporation, Proprietary and Confidential 78Q21x3-DB MicroPHY DEMO BOARD MANUAL Ground Layer - MII Evaluation Board Rev_2.3 ...

Page 14

Teridian Semiconductor Corporation, Proprietary and Confidential 78Q21x3-DB MicroPHY DEMO BOARD MANUAL Bottom Layer - MII Evaluation Board Rev_2.3 ...

Page 15

No responsibility is assumed by Teridian Semiconductor Corporation for use of this product or for any infringements of patents and trademarks or other rights of third parties resulting from its use. No license is granted under any patents, patent rights ...

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