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參數(shù)資料
| 型號： | μPD98408 |
| 廠商： | NEC Corp. |
| 英文描述： | ATM Physical Interface(ATM 物理接口) |
| 中文描述： | ATM物理接口（自動柜員機物理接口） |
| 文件頁數(shù)： | 1/32頁 |
| 文件大小： | 193K |
| 代理商： | ΜPD98408 |
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The information in this document is subject to change without notice.
Document No. S12313EJ2V1DS00 (2nd edition)
Date Published April 1998 J CP(K)
Printed in Japan
1997
6-PORT 25M ATM PHY LSI
DATA SHEET
MOS INTEGRATED CIRCUIT
μ
PD98408
The
μ
PD98408 is an ATM physical layer LSI IC that complies with ATM25 (25.6 Mbps) and which supports TC
sublayer and PMD sublayer functions. Interfacing with the ATM layer and AAL layer LSI is implemented at UTOPIA
Level 2.
FEATURES
Provides a 25.6-Mbps ATM PHY (PMD & TC) function for six circuits
Conforms to the ATM Forum PHY interface specifications (af-phy-0040.000 November 1995).
UTOPIA Level 2 V1.0 (af-phy-0039.000 June 1995: max. 8 bits/40 MHz) interface
Three-cell built-in transmit/receive FIFOs for each circuit
PMD sublayer functions:
(a) Built-in clock recovery.
(b) Built-in equalizer.
TC sublayer functions:
(a) NRZI encoder/decoder.
(b) Command byte insertion/detection.
(c) 4B/5B encoder/decoder.
(d) Cell scrambler/descrambler.
(e) HEC generation/verification.
CPU interface: Intel or Motorola can be selected.
Supports STP and UTP (Categories 3, 4, 5).
Loopback function: Loopback in the PMD and ATM layers.
Operation And Maintenance (OAM) functions: Input failure detection, HEC error detection and 4B/5B code error
detection.
Test function: Supports JTAG.
Power supply voltage: 3.3 V
±
5 %.
ORDERING INFORMATION
Part Number
Package
μ
PD98408GD-LML
208-pin plastic QFP (fine pitch) (28
×
28 mm)
Remark
This document indicates active low pins in the format of "xxx_B" (_B after the pin name).
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