DS21458-W+ Maxim Integrated, DS21458-W+ Datasheet - Page 11

• Manufacturer Part Number: DS21458-W+
• Description: Network Controller & Processor ICs
• Manufacturer: Maxim Integrated

Specifications of DS21458-W+

• Product: Framer
• Number Of Transceivers: 4
• Data Rate: 64 Kbps
• Supply Current (max): 328 mA
• Maximum Operating Temperature: + 70 C
• Mounting Style: SMD/SMT
• Package / Case: CSBGA
• Minimum Operating Temperature: 0 C
• Operating Supply Voltage: 3.3 V
• Supply Voltage - Max: 3.465 V
• Supply Voltage - Min: 3.135 V
• Part # Aliases: 90-21458+W00

2. FEATURE HIGHLIGHTS
2.1 General
2.2 Line Interface
2.3 Clock Synthesizer
 DS21455: 27mm, 1.27 pitch BGA, compatible replacement for the DS21Q55
 DS21458: 17mm, 1.00 pitch CSBGA
 3.3V supply with 5V tolerant inputs and outputs
 Evaluation kits
 IEEE 1149.1 JTAG-boundary scan
 Driver source code available from the factory
 Requires a single master clock (MCLK) for both E1 and T1 operation. Master clock can be
 Fully software configurable
 Short- and long-haul applications
 Automatic receive sensitivity adjustments
 Ranges include 0dB to -43dB or 0dB to -12dB for E1 applications; 0dB to -36dB or 0dB to -15dB
 Receive level indication in 2.5dB steps from -42.5dB to -2.5dB
 Internal receive termination option for 75Ω, 100Ω, and 120Ω lines
 Monitor application gain settings of 20dB, 26dB, and 32dB
 G.703 receive-synchronization signal-mode
 Flexible transmit-waveform generation
 T1 DSX-1 line build-outs
 T1 CSU line build-outs of -7.5dB, -15dB, and -22.5dB
 E1 waveforms include G.703 waveshapes for both 75Ω coax and 120Ω twisted cables
 AIS generation independent of loopbacks
 Alternating ones and zeros generation
 Square-wave output
 Open-drain output option
 NRZ format option
 Transmitter power-down
 Transmitter 50mA short-circuit limiter with exceeded indication of current limit
 Transmit open-circuit-detected indication
 Line interface function can be completely decoupled from the framer/formatter
 Output frequencies include 2.048MHz, 4.096MHz, 8.192MHz, and 16.384MHz
 Derived from recovered line clock or master clock
2.048MHz, 4.096MHz, 8.192MHz, or 16.384MHz. Option to use 1.544MHz, 3.088MHz,
6.276MHz, or 12.552MHz for T1-only operation
for T1 applications
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DS21455/DS21458 Quad T1/E1/J1 Transceivers