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Features
- 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 75Ω/100Ω/110Ω/120Ω/133Ω
- 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
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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.
Applications
- BITS Timing
- Rate Conversion
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DS26504
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Data Sheet
3
DS26504: T1/E1/J1/64KCC BITS Element Data Sheet (Rev.8)
DS26504: T1/E1/J1/64KCC BITS单元 Data Sheet
DS26504: T1/E1/J1/64KCC BITSエレメント Data Sheet
Reliability Data
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Design Note
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Documentation
Data Sheet 1
Reliability Data 1
Application Note 3
Design Note 1
Evaluation Kits 1
DS26504DK
T1/E1/J1/64K/8KCC BITS Element Design Kit
Features and Benefits
- Expedites New Designs by Eliminating First-Pass Prototyping
- Demonstrates Key Functions of DS26504 BITS Element
- Includes DS26504 BITS Element, Transformers, BNC, and RJ48 Network Connectors and Termination Passives
- BNC Connections for 75Ω E1
- Bantam and RJ48 Connectors for 120Ω E1 and 100Ω T1
- Interface Directly to Windows-Based Computers
- ChipView Software Provides Point-and-Click Access to the DS26504 Register Set
- Software-Controlled (Register Mapped) Configuration Switches to Facilitate Clock and Signal Routing
- All Equipment-Side Framer Pins are Easily Accessible for External Data Source/Sink
- LEDs for Loss-of-Signal and Interrupt Status as well as Indications for Multiple Clock and Signal Routing Configurations
- Easy-to-Read Silkscreen Labels Identify the Signals Associated with All Connectors, Jumpers, and LEDs
Product Detail
The DS26504DK is an easy-to-use evaluation board for the DS26504 T1/E1/J1/64K/8KCC BITS element. The DS26504DK is intended to be used as a stand-alone design kit. The board is complete with a DS26504 BITS element, transformers, termination resistors, FPGA-based configuration switches, and network connectors. Dallas' ChipView software gives point-and-click access to configuration and status registers from a Windows®-based PC. On-board LEDs indicate receive loss-of-signal and interrupt status as well as multiple clock and signal routing configurations.
Applications
- BITS Timing
- Rate Conversion
Resources
Evaluation Kits1
Tools & Simulations 2
IBIS Model 1
IBIS Model
BSDL Model File 1