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RC7222-A1 の電気的特性と機能
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RC7222-A1のメーカーはRAYCOMです、この部品の機能は「Multi-Functional Ethernet Converter」です。 |
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製品の詳細 ( Datasheet PDF )
| 部品番号 RC7222-A1 |
| 部品説明 Multi-Functional Ethernet Converter |
| メーカ RAYCOM |
ロゴ |
このページの下部にプレビューとRC7222-A1ダウンロード（pdfファイル）リンクがあります。 Total 30 pages |
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RC7222-A1
Multi-Functional Ethernet Converter
Datasheet
V1.00
Dec.2009
Copyright Notice
All copyrights of this document belong to Raycom. Contents of this document are subject to change
without notice, which are suitable for reading by employees, agents and clients of Raycom during
their usage of relevant products. Without written permission of Raycom, copying, reprinting of this
document by any entity or individual is strictly forbidden.
1 Page
RC7222-A1 Datasheet V1.00
Page 3
4.7 SDRAM Interface.................................................................................................................... 43
4.7.1 SDRAM Pin...................................................................................................................... 43
4.7.2 Buffer Size Adjustment .................................................................................................... 44
4.7.3 Frame Statistic ................................................................................................................. 45
4.8 SA Bit Application ................................................................................................................... 48
4.9 Test Function .......................................................................................................................... 49
4.9.1 SDRAM Test .................................................................................................................... 49
4.9.2 Bit Error Test .................................................................................................................... 49
4.9.3 Test Indicators.................................................................................................................. 50
4.10 Software Reset ..................................................................................................................... 51
5 Management Description............................................................................................................ 52
5.1 Register Address Organization............................................................................................... 52
5.2 Management Interface（UART/I2C） .................................................................................... 53
5.3 UART Instructions................................................................................................................... 54
5.4 I2C Instruction ......................................................................................................................... 57
5.5 Register Description ............................................................................................................... 58
5.5.1 MIB Register .................................................................................................................... 58
5.5.2 Management Frame Register .......................................................................................... 79
5.5.3 Global Register ................................................................................................................ 81
6 Application ................................................................................................................................... 83
6.1 Ethernet Bridge System.......................................................................................................... 83
6.2 Ethernet Optical Modem......................................................................................................... 83
7 Electrical Characteristics ........................................................................................................... 85
7.1 Absolute Maximum Ratings .................................................................................................... 85
7.2 Normal Operating Conditions ................................................................................................. 85
7.2.1 Power Consumption ........................................................................................................ 86
7.3 DC Characteristics.................................................................................................................. 86
7.4 AC Characteristic .................................................................................................................... 87
7.4.1 MII Interface Timing ......................................................................................................... 87
7.4.2 SDRAM Interface Timing ................................................................................................. 88
7.4.3 ST_BUS Interface Timing ................................................................................................ 90
7.4.4 Serial Configuration Interface Timing .............................................................................. 91
8 Package Information ................................................................................................................... 92
Figure Index
Fig.3-1-1 Pin Assignment ................................................................................................................... 9
Fig.4-1-1 RC7222-A1 Block Diagram............................................................................................... 19
Fig.4-2-2-2-1 Optical alarm priority................................................................................................... 22
Fig.4-2-3-1-1 E1 alarm priority ......................................................................................................... 24
RAYCOM CO., LTD TEL: +86-10-80106100 FAX: +86-10-89719741 http://www.raycom.com.cn
3Pages
RC7222-A1 Datasheet V1.00
Page 6
1 Overview
The RC7222-A1 is a highly integrated ASIC for transmitting Ethernet frames over TDM. The
TDM interface is called Wide Access Network(WAN), which includes E1(framed or unframed)
or PDH optical port. HDLC protocol is adopted to encapsulate the Ethernet frames, which is
compatible with the protocol in the RJ017.
The RC7222-A1 supports mapping of the registers from the remote to the local over the PDH
optical frame overhead or SA bits in the G.704 frame, that the MCU in local device can get
information of the remote device only from registers of the local RC7222-A1. The RC7222-A1
also supports user-defined management frame, which can be encapsulated and transmitted
together with Ethernet frames in HDLC format. Then the MCU can access for each other even
over unframed E1.
In addition the RC7222-A1 can be configured by pins that is the RC7222-A1 can work well
without MCU.
2 Features
Ethernet Interface
Standard Media Independent Interface (MII) and MDIO management interface for
connection to Ethernet PHY
10M/100Mbps, full/half duplex supported, fully IEEE 802.3 compatible
Frames with length from 64 to 2031 bytes transparently transferred
Illegal frames such as CRC error packets, undersized packets (less than 64 bytes) and
oversized packets (more than 2031 bytes) discarded
PAUSE flow control ability in full duplex mode
Exhaustive alarm detection and performance statistic
E1/FE1 Interface
Compatible with ITU-T recommendations: G.703, G.704, G.706 and G.732
Optional line code: HDB3 or NRZ
Local oscillator or the clock recovered from the line for Timing source, more flexible for
different applications
RAYCOM CO., LTD TEL: +86-10-80106100 FAX: +86-10-89719741 http://www.raycom.com.cn
6 Page
合計 : 30 ページ |
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| 部品番号 | 部品説明 | メーカ |
| RC7222-A1 | Multi-Functional Ethernet Converter | RAYCOM |
| RC7222-A2 | Multifunction Ethernet converter | RAYCOM |