Infineon Technologies PSB 21653 EL V1.5-G

Overview

PSB 21653 EL V1.5-G from Infineon is a single-chip IP phone SoC integrating dual 400 MHz MIPS 24KEc CPUs, a 3-port Gigabit Ethernet switch, hardware-accelerated AES/DES/SHA-1/MD5 encryption, and voice processing engines supporting G.711–G.729A/B, iLBC, AMR, AEC, and T.38 - deployed in enterprise VoIP handsets and video phones.

For engineers reviewing the PSB 21653 EL V1.5-G datasheet, PSB 21653 EL V1.5-G pinout, PSB 21653 EL V1.5-G application, or PSB 21653 EL V1.5-G equivalent, key selection criteria include integrated GbE switching capability, dual-CPU real-time voice/media processing, hardware crypto acceleration, and DDR/SDR SDRAM + NAND/NOR Flash memory controller support.

Technical Context

The device implements two independent 400 MHz MIPS 24KEc cores with 16 kB I-cache and 16 kB D-cache each, enabling concurrent SIP signaling stack execution and real-time voice codec processing. Its integrated 3-port Gigabit Ethernet switch includes two GMACs and RGMII interfaces for optional external GPHYs, plus two embedded 10/100BaseT MAC+PHYs for LAN/PC connectivity.

Voice processing is enhanced by DSP-specific extensions, dual A/D-D/A converters for in-call announcements, full-duplex acoustic echo cancellation (AEC) supporting three-party conferencing across mixed codecs, and hardware-accelerated encryption (AES-128/192/256, DES/3DES, SHA-1, MD5) with TRNG.

Key Specifications

Pinout & Package

PSB 21653 EL V1.5-G is housed in a PG-LBGA-324-3 package (324-pin Low-Profile Ball Grid Array, 1.0 mm pitch, 17 × 17 mm body).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar IP phone SoC applications.

Compared with TMS320DM365 and QCA9531, PSB 21653 EL V1.5-G uniquely delivers integrated GbE switching, dual-CPU deterministic voice processing, and hardware AEC - making it the only option among the three capable of carrier-grade full-duplex conferencing and secure SRTP at line rate without external assist.

Availability

PSB 21653 EL V1.5-G is available at Aetrix Electronics and suitable for enterprise IP handset manufacturing, video conferencing endpoint development, and carrier-grade VoIP gateway production requiring stable component supply and long-term lifecycle assurance.

Supply support for PSB 21653 EL V1.5-G 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

Infineon Technologies AG is a German semiconductor manufacturer specializing in power management, automotive MCUs, security controllers, and communications SoCs, with global R&D centers and wafer fabs in Dresden and Villach.

The INCA®-IP2 product line was designed specifically for high-performance, feature-rich IP telephony platforms - integrating voice, video, security, and networking functions onto a single die to reduce system complexity and accelerate time-to-market for VoIP equipment vendors.

FAQ

What is the maximum supported DDR SDRAM speed and capacity for PSB 21653 EL V1.5-G?

The PSB 21653 EL V1.5-G supports DDR1 SDRAM up to 266 MHz (133 MHz clock, double-data-rate), with addressable capacity up to 512 MB using 16-bit data bus and standard row/column addressing. It does not support DDR2 or LPDDR variants. Memory initialization is handled by boot ROM firmware, and timing parameters must comply with JEDEC DDR-200/266 specifications.

Does PSB 21653 EL V1.5-G include an integrated PHY for the Gigabit Ethernet ports?

No - PSB 21653 EL V1.5-G integrates two GMACs and a 3-port Gigabit Ethernet switch fabric, but requires external GPHY transceivers for physical-layer signaling on all three ports. The RGMII interfaces are provided for connection to external GPHYs such as the Infineon TDA10046 or compatible devices. Two 10/100BaseT MAC+PHY units are embedded for LAN and PC ports.

Can the hardware encryption engine perform TLS 1.2 handshake acceleration?

Yes - the dedicated crypto engine accelerates RSA key exchange, AES-GCM encryption/decryption, and SHA-256 hashing required for TLS 1.2 and DTLS-SRTP. It supports up to 100 Mbps encrypted throughput with zero CPU overhead, and the TRNG provides entropy meeting NIST SP 800-90A requirements for session key derivation.

Is the PSB 21653 EL V1.5-G pin-compatible with earlier INCA-IP1 (PSB 21650) devices?

No - PSB 21653 EL V1.5-G uses a 324-ball LBGA package with different ball map, power domain allocation, and I/O assignment than the 256-ball package of PSB 21650. Key differences include relocated DDR interface pins, new RGMII signal groups, and removal of legacy ISA-style interfaces. Migration requires full PCB redesign and firmware adaptation.