DS26503 Datasheet

IC型号：
DS26503
PDF描述：
T1/E1/J1 BITS单元
文件大小：
4036.34KB
PDF页数：
122页
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DS26504

T1/E1/J1/64KCC BITS Element

www.maxim-ic.com

GENERAL DESCRIPTION

The DS26504 is a building-integrated timing-supply

(BITS) clock-recovery element. It also functions as a

basic T1/E1 transceiver. The receiver portion can

recover a clock from T1, E1, 64kHz composite clock

(64KCC), and 6312kHz synchronization timing

interfaces. In T1 and E1 modes, the Synchronization

Status Message (SSM) can also be recovered. The

transmit portion can directly interface to T1, E1, or

64KCC synchronization interfaces as well as source

the SSM in T1 and E1 modes. The DS26504 can

translate between any of the supported inbound

synchronization clock rates to any supported

outbound rate. The DS26504 can also accept an 8kHz

as well as a 19.44MHz reference clock. A separate

output is provided to source a 6312kHz clock. The

device is controlled through a parallel, serial, or

hardware controller port.

搂

APPLICATIONS

BITS Timing

Rate Conversion

FEATURES

搂

Accepts 8kHz and 19.44MHz References in

Addition to T1, E1, and 64kHz Composite Clock

GR378 Composite Clock Compliant

G.703 2048kHz Synchronization Interface

Compliant

G.703 64kHz Option A & B Centralized Clock

Synchronization Interface Compliant

G.703 64kHz Japanese Composite Clock

Synchronization Interface Compliant

G.703 6312kHz Japanese Synchronization

Interface Compliant

Interfaces to Standard T1/J1 (1.544MHz) and E1

(2.048MHz)

Interface to CMI-Coded T1/J1 and E1

T1/E1 Transmit Payload Clock Output

Short- and Long-Haul Line Interface

Transmit and Receive T1 BOC SSM Messages

with Receive Message Change of State and

Validation Indication

Transmit and Receive E1 Sa(n) Bit SSM

Messages with Receive Message Change of State

Indication

Crystal-Less Jitter Attenuator with Bypass Mode

for T1 and E1 Operation

Fully Independent Transmit and Receive

Functionality

Internal Software-Selectable Receive and

Transmit Side Termination for

75鈩?100鈩?110鈩?120鈩?133鈩?/div>

Monitor Mode for Bridging Applications

Accepts 16.384MHz, 12.8MHz, 8.192MHz,

4.096MHz, 2.048MHz, or 1.544MHz Master

Clock

64kHz, 8kHz, and 400Hz Outputs in Composite

Clock Mode

8-Bit Parallel Control Port, Multiplexed or

Nonmultiplexed, Intel or Motorola

Serial (SPI) Control Port and Hardware Control

Mode

Provides LOS, AIS, and LOF Indications through

Hardware Output Pins

Fast Transmitter Output Disable through Device

Pin for Protection Switching

IEEE 1149.1 JTAG Boundary Scan

3.3V Supply with 5V Tolerant Inputs and

Outputs

Pin and Software Compatible with the DS26502

and DS26503

ORDERING INFORMATION

PART

DS26504L

DS26504LN

TEMP RANGE PIN-PACKAGE

0掳C to +70掳C

-40掳C to +85掳C

64 LQFP

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 of 128

REV: 070105

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