Infineon Technologies CYW15G0401DXB-BGI

Overview

CYW15G0401DXB from Cypress Semiconductor is a quad-channel HOTLink II™ transceiver IC for high-speed serial interconnect in base station radio units, supporting OBSAI-RP3 compliance at 1536 MBaud and operating up to 1540 MBaud. It integrates four independent 8-bit parallel-to-serial/serial-to-parallel channels with 8B/10B encoding, dual PECL-compatible differential I/O per channel, and on-chip PLLs-enabling 12 Gbps aggregate throughput across backplane or fiber links.

For engineers reviewing the CYW15G0401DXB datasheet, CYW15G0401DXB pinout, CYW15G0401DXB application, or CYW15G0401DXB equivalent, key selection considerations include OBSAI-RP3 timing compliance, multi-channel bonding (1×32-bit/2×16-bit/4×8-bit), skew-aligned byte framing, and integrated BIST for at-speed link validation in wireless infrastructure designs.

Technical Context

The CYW15G0401DXB implements second-generation HOTLink architecture with fully integrated transmit/receive PLLs, eliminating external loop filters. Each of its four channels supports selectable 8B/10B encode/decode, parity check/generate, and configurable clocking (recovered or reference-based).

It features MultiFrame™ Receive Framer with K28.5 comma detection, low-latency byte alignment, and optional Elasticity Buffer (RX) and Phase Align Buffer (TX). Channel bonding is controlled via BOND_ALL, BOND_INH, and BOND_ST[1:0], enabling synchronous 32-bit transport across chips or inter-chip N×32-bit expansion.

Key Specifications

Pinout & Package

256-ball thermally enhanced BGA (17 mm × 17 mm, 1.0 mm pitch), Pb-free option available. Package supports high-density RF board layouts with dedicated ground/power ball arrays and differential pair routing zones.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-speed serial transceiver applications.

Compared with CYV15G0401DXB and CYP15G0401DXB, the CYW15G0401DXB uniquely guarantees OBSAI-RP3 operation at 1540 MBaud with full link-layer diagnostics-making it the sole fit for 4G/5G remote radio head deployments requiring field-proven standard conformance.

Availability

CYW15G0401DXB is available at Aetrix Electronics and suitable for wireless infrastructure, broadcast video, and high-speed backplane applications requiring stable component supply, long-term lifecycle support, and traceable sourcing for telecom OEMs.

Supply support for CYW15G0401DXB includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Cypress Semiconductor (now part of Infineon Technologies) designs high-performance mixed-signal ICs for communications, computing, and industrial markets, with deep expertise in serial interconnect and timing solutions.

The HOTLink II product line targets high-reliability serial transport in telecom and broadcast systems, emphasizing standards compliance (OBSAI, SMPTE, CPRI), deterministic latency, and built-in diagnostics for field-deployable hardware.

FAQ

Is CYW15G0401DXB pin-compatible with CYV15G0401DXB or CYP15G0401DXB?

Yes-CYW15G0401DXB shares identical 256-ball BGA package, pinout, and parallel interface timing with CYV15G0401DXB and CYP15G0401DXB. All three variants use the same mechanical footprint and LVTTL I/O structure, enabling drop-in replacement at the board level when electrical and compliance requirements align.

Does CYW15G0401DXB require external termination resistors for its PECL outputs?

No-its dual PECL-compatible outputs (e.g., OUTA1±, OUTA2±) feature internal 50 Ω source termination matched to standard transmission lines, eliminating need for external bias or termination components. This simplifies layout and improves signal integrity on dense RF PCBs.

Can CYW15G0401DXB operate at non-standard data rates like 1200 MBaud?

Yes-the device supports any serial rate from 195 to 1540 MBaud in continuous range, not just OBSAI-defined values. Its PLLs lock dynamically to incoming REFCLK frequency, enabling flexible configuration for proprietary protocols or lab validation at intermediate rates.

What is the function of the BOND_ST[1:0] pins, and how do they affect channel bonding?

BOND_ST[1:0] configures the width of bonded channels: 00 = 4×8-bit independent, 01 = 2×16-bit, 10 = 1×32-bit, 11 = reserved. When asserted with BOND_ALL, these pins determine how parallel data is distributed across channels-enabling seamless migration from byte-wide to bus-wide transport without redesigning the host interface logic.