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參數(shù)資料
| 型號(hào)： | 8023A |
| 廠商： | LSI Corporation |
| 英文描述： | Manchester Code Converter(provides the Manchester data encoding and decoding functions of the Ethernet Local Area Network physical layer)(曼徹斯特碼轉(zhuǎn)換器（具有將以太網(wǎng)物理層的曼徹斯特碼編碼和譯碼功能）) |
| 中文描述： | 曼徹斯特碼轉(zhuǎn)換器（曼徹斯特提供的數(shù)據(jù)編碼和解碼的以太網(wǎng)局域網(wǎng)物理層功能）（曼徹斯特碼轉(zhuǎn)換器（具有將以太網(wǎng)物理層的曼徹斯特碼編碼和譯碼功能）） |
| 文件頁數(shù)： | 1/15頁 |
| 文件大小： | 212K |
| 代理商： | 8023A |
8023A
MD400022/D
1
MCC
TM
Manchester
Code Converter
92123
MCC is a trademark of SEEQ Technology, Inc.
EDLC is a registered trademark of SEEQ Technology, Inc.
Features
I
Compatible with IEEE 802.3 /Ethernet (10BASE5),
IEEE802.3/CHEAPERNET (10BASE2) and Ethernet
Rev. 1 Specifications
I
Compatible with 8003 ELDC
, 8005 Advanced
EDLC and Intel 82586 LAN Controller
I
Manchester Data Encoding/Decoding and
Receiver Clock Recovery with Phase Locked
Loop (PLL)
I
Receiver and Collision Squelch Circuit and Noise
Rejection Filter
I
Differential TRANSMIT Cable Driver
I
Loopback Capability for Diagnostics and
Isolation
I
Fail-Safe Watchdog Timer Circuit to Prevent
Continuous Transmission
I
20 MHz Crystal Oscillator
I
Transceiver Interface High Voltage (16 V) Short
Circuit Protection
I
Low Power CMOS Technology with Single 5V
Supply
I
20 pin DIP (Commercial) &
20 pin PLCC Packages (Commercial, Extended)
I
Temperature Ranges,
Commercial 0
°
C to +70
°
C
Extended –40
°
C to +85
°
C
Figure 1. 8023A MCC Manchester Code Converter
Block Diagram.
TxEN
CSN
X1
X2
RxC
RxD
COLL
TRANSMIT
Tx+
Tx–
RECEIVE
Rx+
Rx–
COLL+
COLL–
COLLISION
TxC
TxD
LPBK/
WDTD
WATCHDOG
TIMER
ENCODER
CARRIER
SENSE
DECODER
10MHz
DETECTOR
XTAL
CLOCK
MUX
VCC
VSS
MODE 1
MODE 2
Functional Block Diagram
Description
The SEEQ 8023A Manchester Code Converter chip pro-
vides the Manchester data encoding and decoding func-
tions of the Ethernet Local Area Network physical layer. It
interfaces to the SEEQ 8003 and 8005 Ethernet Data Link
Controllers or to the Intel 82586 LAN Controller and any
standard Ethernet transceiver as defined by IEEE 802.3
and Ethernet Revision 1.
Pin Configuration
DUAL-IN-LINE
TOP VIEW
(Commercial Temp Only)
R
G
C
C
X
9
10
11
12
13
2
M
1
M
20
VC
19
T
18
Tx–
17
TxD
15
TxEN
14
X1
Rx+
4
Rx–
5
CSN
6
COLL
7
RxC
8
3
L
16
TxC
(CSN)
(COLL)
(RxC)
(TxEN)
PLASTIC LEADED CHIP CARRIER
TOP VIEW
(Commercial and Extended Temps)
8023A
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
VCC
Tx+
Tx–
MODE 1
Rx+
Rx–
CSN
COLL
RxC
RxD
VSS
TxD
TxEN
X1
X2
COLL+
COLL–
LPBK/WDTD
TxC
MODE 2
(CSN)
(COLL)
(RxC)
(TxEN)
Note: Check for latest Data Sheet revision
before starting any designs.
SEEQ Data Sheets are now on the Web, at
www.lsilogic.com.
This document is an LSI Logic document. Any
reference to SEEQ Technology should be
considered LSI Logic.
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