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Infineon Technologies PSB 21493 H V1.7
- Part No.:
- PSB 21493 H V1.7
- Manufacturer:
- Infineon Technologies
- Category:
- Telecom
- Package:
- 144-BQFP
- Datasheet:
-
PSB 21493 H V1.7.pdf
- Description:
- IC TELECOM INTERFACE MQFP-144
- Quantity:
- Payment:
- Shipping:
Inventory:1,171
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Product details
Overview
PSB 21493 H V1.7 from Infineon Technologies is a highly integrated digital PBX terminal codec with embedded C166 16-bit CPU, UPN two-wire transceiver, full-duplex acoustic echo cancellation, USB 1.1 (12 Mbit/s), and analog front end supporting handset, headset, speakerphone, and microphone interfaces. It implements ITU-T G.711 A-law/μ-law PCM codec, DTMF receiver, tone generator, and three differential audio inputs/outputs.
For engineers reviewing the PSB 21493 H V1.7 datasheet, PSB 21493 H V1.7 pinout, PSB 21493 H V1.7 application, or PSB 21493 H V1.7 equivalent, key selection considerations include UPN transceiver compliance, USB endpoint configuration (15 SW-configurable + control endpoint 0), on-chip OCDS debug support, 4 KB SRAM, and dual PWM units for LED/motor control in feature phone designs.
Technical Context
The PSB 21493 H V1.7 integrates a C166 CPU core with on-chip 4 KB SRAM and OCDS Level 1 debug system, enabling real-time firmware execution and in-circuit debugging. Its UPN transceiver handles AMI-coded 2B+D channel physical layer (Layer-1) and basic Layer-2 framing for digital PBX line interface.
The analog front end includes three differential microphone inputs (handset, speakerphone, headset) and three differential outputs (200 Ω earpiece/headset, 100 mW @ 20 Ω loudspeaker), all processed by a fixed-point DSP supporting full-duplex echo cancellation, noise reduction, and ITU-T G.712/ETSI NET33-compliant PCM encoding/decoding.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | C166 16-bit microcontroller with bootstrap loader and on-chip debug (OCDS Level 1) |
| USB Interface | Full-speed 12 Mbit/s compliant with USB Specification v1.1; 15 software-configurable endpoints + bidirectional control endpoint 0 |
| Audio Codec | PCM A-law/μ-law (ITU-T G.711) and 8/16-bit linear; fully compliant with ITU-T G.712 and ETSI NET33 |
| Echo Cancellation | Full-duplex acoustic echo cancellation with noise reduction and two transducer correction filters |
| Analog I/O | Three differential mic inputs; three differential audio outputs (200 Ω earpiece/headset, 100 mW @ 20 Ω speaker) |
| UPN Transceiver | Two-wire interface supporting AMI-coded 2B+D channels for digital PBX subscriber access |
| On-Chip Memory | 4 KB general-purpose SRAM; no external RAM required for basic PBX terminal operation |
Pinout & Package
PSB 21493 H V1.7 is housed in a P-TQFP-144 package (144-pin thin quad flat pack, 20 mm × 20 mm, 0.5 mm pitch).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDA, VSSA | Analog Power Supply/Ground | Separate 3.3 V analog domain for AFE stability; decoupling critical for SNR & echo cancellation performance |
| VDDD, VSSD | Digital Power Supply/Ground | 3.3 V digital domain for CPU, USB, and logic; independent from analog supply to minimize coupling noise |
| UPN_TX, UPN_RX | UPN Line Transceiver I/O | Differential pair for AMI-coded 2B+D transmission/reception over two-wire PBX interface |
| USB_DP, USB_DM | USB Full-Speed Differential Pair | Direct connection to USB 1.1 host without external PHY; supports plug-and-play PC integration |
| AINx+, AINx− (x=1–3) | Differential Microphone Inputs | Three dedicated pairs for handset, speakerphone, and headset mics; enable simultaneous full-duplex capture |
| AOUTx+, AOUTx− (x=1–3) | Differential Audio Outputs | Drive 200 Ω earpiece/headset (low-Z) and 20 Ω loudspeaker (100 mW); support hybrid speakerphone topology |
| PWM1, PWM2 | Pulse Width Modulation Outputs | Configurable for LED matrix control or buzzer/tone driver; offload CPU for real-time UI feedback |
Key Features
| Feature | Design Value |
|---|---|
| Integrated UPN Transceiver | Eliminates need for external line interface unit (LIU); reduces BOM count and PCB area for PBX terminal designs |
| Full-Duplex Echo Cancellation | Enables high-quality hands-free speakerphone operation without external DSP; meets ITU-T P.340 acoustic quality requirements |
| USB 1.1 Host Interface | Allows direct PC connectivity for internet telephony, unified messaging, and PC dialing-no additional USB bridge IC required |
| On-Chip OCDS Debug | Supports real-time firmware debugging and trace via JTAG-compatible interface; accelerates feature phone development cycle |
| Dual PWM Units | Drive LED matrices or generate audible tones independently of CPU; frees up C166 cycles for voice processing tasks |
Applications
| IP PBX Terminal Equipment | USB-Connected Feature Phone |
|---|---|
Use Scenario: Digital telephone set connected to enterprise IP-PBX via UPN two-wire interface, with local speakerphone and headset support. IC Role / Device Role / Timing Role: Single-chip PBX terminal controller handling line interface (UPN), voice codec, echo cancellation, USB host comms, and peripheral control (LEDs, keypad). Use Value: Reduces component count by integrating transceiver, DSP, CPU, and USB into one die-enabling compact, cost-effective PBX handsets. | Use Scenario: Feature phone used as PC peripheral for VoIP calling, call logging, and unified messaging via native USB link. IC Role / Device Role / Timing Role: USB audio device class (UAC) endpoint with integrated PCM codec and echo-cancelled speakerphone path. Use Value: Enables zero-additional-hardware PC telephony; leverages built-in USB 1.1 stack and 15 configurable endpoints for HID + audio composite device. |
| Smart Conference Phone | Multi-Mode Digital Desk Phone |
Use Scenario: Tabletop conference unit with multiple microphones and loudspeaker, deployed in meeting rooms with both UPN PBX and PC USB connectivity. IC Role / Device Role / Timing Role: Central audio processor managing three differential mic inputs, echo cancellation, tone generation, and dual output routing. Use Value: Supports simultaneous full-duplex capture from multiple sources while maintaining >40 dB echo return loss per ITU-T P.340. | Use Scenario: Business desk phone supporting UPN line, USB PC mode, and local headset/handset switching without external switches. IC Role / Device Role / Timing Role: Dual-role terminal IC: operates as UPN terminal when connected to PBX, and as USB audio device when connected to PC. Use Value: Eliminates mechanical mode-switching hardware; firmware-selectable interface routing via PD-Bus and IOM-2 handlers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital PBX terminal codec applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Infineon PSB 21492 H V1.7 | Same die, but lacks USB interface; no USB_DP/DM pins or USB controller logic | Restricted to UPN-only PBX terminals without PC connectivity | Select when USB functionality is unnecessary and BOM cost reduction is prioritized |
| Conexant CX82310-21 | Dedicated USB audio codec (no embedded CPU or UPN transceiver); requires external MCU for PBX protocol handling | Suitable only for USB-centric designs; cannot replace UPN line interface function | Choose only if UPN interface is omitted and design relies entirely on USB host for control and audio |
Compared with PSB 21493 H V1.7, PSB 21492 offers lower cost and power for UPN-only phones but forfeits PC integration, while CX82310-21 shifts system architecture toward external MCU dependency and eliminates PBX line capability entirely.
Availability
PSB 21493 H V1.7 is available at Aetrix Electronics and suitable for IP PBX terminal equipment, USB-connected feature phones, smart conference phones, and multi-mode digital desk phones requiring stable component supply and long-term industrial availability.
Supply support for PSB 21493 H V1.7 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, industrial, and communications ICs, with global R&D and manufacturing infrastructure.
The INCA-P product line-including PSB 21493-is designed specifically for digital terminal equipment in enterprise telephony, integrating UPN line interface, voice processing, and USB connectivity into a single chip for PBX feature phones.
FAQ
Does PSB 21493 H V1.7 support USB 2.0?
No. PSB 21493 H V1.7 implements USB Specification v1.1 Full-Speed mode only (12 Mbit/s). It does not support High-Speed (480 Mbit/s) or USB 2.0 signaling. The USB controller is hardware-limited to full-speed operation and lacks the PHY or protocol stack for USB 2.0 negotiation or bandwidth.
Can the C166 CPU execute custom firmware for proprietary DTMF detection?
Yes. The embedded C166 CPU has 4 KB on-chip SRAM and bootstrap loader support, allowing field-upgradable firmware. Customers may implement custom DTMF algorithms or extend tone generation beyond the built-in DTMF receiver, provided memory and timing constraints are met.
Is external memory required for PSB 21493 H V1.7 operation?
No. PSB 21493 H V1.7 contains 4 KB of on-chip general-purpose SRAM sufficient for boot code, USB descriptor tables, and real-time voice buffer management. External memory is optional and only needed for large firmware images or extended feature sets beyond baseline PBX functionality.
What is the maximum supported loudspeaker output power?
The loudspeaker output delivers 100 mW into a 20 Ω load, as specified in the product brief. This corresponds to ~1.41 VRMS across the load. Driving higher impedances (e.g., 8 Ω) exceeds safe thermal limits and is not supported; external amplification is required for >100 mW or non-20 Ω loads.
PSB 21493 H V1.7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- INCA™
- Package/Case:
- 144-BQFP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- CODEC
- Interface:
- IOM-2
- Number of Circuits:
- 1
- Voltage - Supply:
- -
- Current - Supply:
- -
- Power (Watts):
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- P-MQFP-144-8
PSB 21493 H V1.7 FAQ
1.How can I place an order for PSB 21493 H V1.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for PSB 21493 H V1.7 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for PSB 21493 H V1.7 reliable?
The price and inventory of PSB 21493 H V1.7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PSB 21493 H V1.7 is usually 5 days.
3.What payment methods are accepted for PSB 21493 H V1.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PSB 21493 H V1.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PSB 21493 H V1.7?
PSB 21493 H V1.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PSB 21493 H V1.7 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for PSB 21493 H V1.7?
For technical support, including PSB 21493 H V1.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PSB 21493 H V1.7 requirements.
6.How does Aetrix verify that PSB 21493 H V1.7 is sourced from the original manufacturer or authorized distributors?
All PSB 21493 H V1.7 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that PSB 21493 H V1.7 meets industry standards.
7.What is the process for return or replacement of PSB 21493 H V1.7?
All PSB 21493 H V1.7 units undergo pre-shipment inspection (PSI). If there is an issue with PSB 21493 H V1.7, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The PSB 21493 H V1.7 part is unused and in its original packaging.
Return procedure for PSB 21493 H V1.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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