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DS26401N Schematic ( PDF Datasheet ) - Dallas Semiconducotr

Teilenummer DS26401N
Beschreibung Octal T1/E1/J1 Framer
Hersteller Dallas Semiconducotr
Logo Dallas Semiconducotr Logo 




Gesamt 30 Seiten
DS26401N Datasheet, Funktion
www.maxim-ic.com
GENERAL DESCRIPTION
The DS26401 is an octal, software-selectable T1, E1
or J1 framer. It is composed of eight framer/formatters
and a system (backplane) interface. Each framer has
an HDLC controller that can be mapped to any DS0
or FDL (T1)/Sa (E1) bit. The DS26401 also includes a
full-feature BERT device, which can be used with any
of the eight T1/E1 ports, and an internal clock adapter
useful for creating synchronous, high frequency
backplane timing. The DS26401 is controlled through
an 8-bit parallel port that can be configured for
nonmultiplexed Intel or Motorola operation.
APPLICATIONS
Line Cards
Add-Drop Multiplexers
DSLAMs
Timing Systems
PBXs
Switches
Central Office Equipment
Routers
IMA
ATM
WAN Interface
Customer-Premise
Equipment
Go to www.maxim-ic.com/telecom for a complete list of
Telecommunications data sheets, evaluation kits, application
notes, and software downloads.
DS26401
Octal T1/E1/J1 Framer
FEATURES
§ 8 Independent, Full-Featured T1/E1/J1
Framers/Formatters
§ Independent Transmit and Receive Paths
§ Flexible Signaling Extraction and Insertion
§ Alarm Detection and Insertion
§ Transmit Synchronizer
§ AMI, B8ZS, HDB3, NRZ Line Coding
§ Performance Monitor Counters
§ BOC Message Controller (T1)
§ Two-Frame Elastic Store Buffers for Each
Transmitter and Receiver
§ One HDLC Controller per Framer
§ RAI-CI and AIS-CI Support
§ Full-Feature BERT can be Mapped to Any Port
§ Flexible TDM Backplane Supports Bus Rates
from 1.544MHz to 16.384MHz
§ Internal Clock Generator (CLAD) Supplies
16.384MHz, 8.192MHz, 4.096MHz, or 2.048MHz
§ JTAG Test Port
§ Single 3.3V Supply with 5V Tolerant Inputs
§ 17mm x 17mm, 256-Pin BGA (1.00mm Pitch)
ORDERING INFORMATION
PART
DS26401
DS26401N
TEMP RANGE
0°C to +70°C
-40°C to +85°C
PIN-PACKAGE
256 BGA
256 BGA
Note: Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revisions of any device
may be simultaneously available through various sales channels. For information about device errata, click here: www.maxim-ic.com/errata.
1 REV: 072403






DS26401N Datasheet, Funktion
DS26401 Octal T1/E1/J1 Framer
LIST OF TABLES
Table 7-1. Pin Functions with IBO Mux Enabled ......................................................................................................31
Table 8-1. T1 Alarm Criteria .....................................................................................................................................53
Table 8-2. T1 Line-Code Violation Counting Options ...............................................................................................66
Table 8-3. T1 Path-Code Violation Counting Arrangements ....................................................................................67
Table 8-4. T1 Frames Out-of-Sync Counting Arrangements ....................................................................................68
Table 10-1. E1 Sync/Resync Criteria ......................................................................................................................159
Table 10-2. E1 Alarm Criteria .................................................................................................................................165
Table 10-3. E1 Line Code Violation Counting Options ...........................................................................................177
Table 12-1. Pseudo-Random Pattern Generation ..................................................................................................273
Table 13-1. Throughput Delays ..............................................................................................................................276
Table 16-1. Instruction Codes for IEEE 1149.1 Architecture ..................................................................................306
Table 16-2. ID Code Structure ................................................................................................................................307
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DS26401N pdf, datenblatt
Figure 3-4. Typical NRZ Network-Side Interface to Framers
DS26401 Octal T1/E1/J1 Framer
T1/E1 LIU
OR OTHER
SOURCE OF
NRZ DATA
RPOSx
RNEGx
RCLKx
TPOSx
TNEGx
TCLKx
DS26401
1 OF 8 FRAMERS
2.048MHz or
1.544MHz
NOTE: SET TCR3.7 = 1 TO SELECT NRZ MODE FOR TPOSx. SET RCR3.6 = 1 TO SELECT NRZ MODE FOR RPOSx.
12

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