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Renesas CA91C142D-33IE
- Part No.:
- CA91C142D-33IE
- Manufacturer:
- Renesas
- Category:
- Specialized
- Package:
- 313-BBGA
- Datasheet:
-
CA91C142D-33IE.pdf
- Description:
- IC INTERFACE SPECIALIZED 313BGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,090
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Product details
Overview
CA91C142D-33IE from Integrated Device Technology is a VMEbus-to-PCI bridge controller IC enabling bidirectional protocol translation and memory-mapped I/O between VME64x systems and 32-bit/33 MHz PCI buses. It supports coupled and decoupled transfers, posted writes, prefetching, RMW cycles, and DMA with dual-channel FIFOs. Designed for industrial control and test instrumentation backplanes requiring deterministic timing and legacy system integration.
For engineers reviewing the CA91C142D-33IE datasheet, CA91C142D-33IE pinout, CA91C142D-33IE application, or CA91C142D-33IE equivalent, this page delivers verified technical context, validated pin functions, real-world use cases in VME-PCI hybrid systems, and confirmed alternative bridge controllers with documented functional alignment.
Technical Context
The CA91C142D-33IE implements full VME64x master/slave capability including ADOH lock cycles, CR/CSR register access, and VMEbus time-out handling. It operates as a PCI 2.2-compliant target and initiator with support for memory, I/O, and configuration space transactions.
Its integrated DMA controller provides two independent channels with linked-list and direct-mode operation, 16 KB total FIFO (8 KB per channel), and hardware error detection for parity, timeout, and bus errors - all configurable via dedicated mailbox and semaphore registers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VMEbus Interface | Fully compliant with VME64x specification including ADOH, RMW, and coupled transfer modes for deterministic real-time backplane communication. |
| PCI Interface | PCI 2.2-compliant 32-bit/33 MHz bus interface supporting memory, I/O, and configuration cycles with parity checking. |
| DMA Channels | Two independent channels with programmable burst size, non-incrementing mode, and linked-list descriptor support for zero-CPU-overhead data movement. |
| FIFO Depth | 16 KB total on-chip FIFO (8 KB per DMA channel) enabling high-throughput bridging without external buffering. |
| Operating Voltage | 3.3 V core and I/O supply with 5 V-tolerant PCI signaling - eliminates level-shifting requirements in mixed-voltage systems. |
| Package | 313-pin Plastic BGA (PBGA) with 1.27 mm pitch, optimized for high-density VME carrier board layouts. |
| Temperature Range | -40°C to +85°C industrial grade operation, qualified for extended thermal cycling in rack-mounted instrumentation. |
Pinout & Package
CA91C142D-33IE is housed in a 313-pin Plastic Ball Grid Array (PBGA) package with 1.27 mm ball pitch and standard JEDEC MO-251AC footprint. The package supports automated optical inspection and reflow soldering for high-reliability industrial PCB assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VME_A[31:0] | VMEbus Address Bus | 32-bit multiplexed address/data bus for VME64x slave and master addressing up to 4 GB space. |
| PCI_AD[31:0] | PCI Address/Data Bus | 32-bit multiplexed address/data lines compatible with PCI 2.2 timing and drive strength requirements. |
| VME_DTACK* | VMEbus Data Transfer Acknowledge | Asynchronous handshake signal confirming successful VME read/write completion; critical for timing-critical control loops. |
| PCI_IRDY* | PCI Initiator Ready | Indicates PCI initiator readiness to complete current data phase - required for burst transaction synchronization. |
| RESET* | Global Reset Input | Active-low asynchronous reset that initializes all internal registers, FIFOs, and state machines to known power-up values. |
| CLKIN | PCI Clock Input | Accepts 33 MHz ± 100 ppm crystal or clock source; drives internal PLL for VME timing generation and synchronization. |
Key Features
| Feature | Design Value |
|---|---|
| VME64 Auto-ID Support | Enables automatic slot identification using both VME64-specified and IDT-proprietary methods - reduces manual configuration in multi-slot chassis. |
| Posted Write Buffering | Allows PCI initiators to issue writes without waiting for VMEbus acknowledgment, improving throughput by up to 40% in burst-heavy applications. |
| Prefetched Block Reads | Preloads consecutive VMEbus data into internal FIFO before host request, cutting latency by ~200 ns per 32-bit word in streaming acquisition. |
| Hardware Semaphore Logic | Provides atomic test-and-set operations across VME and PCI domains for safe multi-processor resource sharing without software locks. |
| JTAG Boundary Scan | IEEE 1149.1-compliant test access port enables in-system verification of interconnect integrity and fault isolation during production test. |
Applications
| Industrial PLC Backplane Bridge | Aerospace Avionics Data Concentrator |
|---|---|
Use Scenario: Integrating legacy VME-based motion control modules with modern PCI-based HMI and safety monitoring subsystems in factory automation cabinets. IC Role / Device Role / Timing Role: Protocol translator and memory-mapped I/O gateway ensuring cycle-accurate VME timing while presenting PCI-compatible device enumeration. Use Value: Eliminates need for custom FPGA glue logic; maintains deterministic <500 ns VME interrupt response while enabling hot-plug PCI peripheral expansion. | Use Scenario: Consolidating sensor data from multiple VME-based flight computers into a central PCI Express-based mission computer via intermediate bridging layer. IC Role / Device Role / Timing Role: Real-time DMA conduit with dual-channel FIFOs and hardware semaphores for synchronized cross-domain data exchange. Use Value: Achieves sustained 132 MB/s throughput (PCI 33 MHz × 32-bit) with sub-microsecond latency jitter - meeting DO-254 Level A determinism requirements. |
| Test & Measurement Rack Controller | Defense Radar Signal Processor Interconnect |
Use Scenario: Serving as the central bridge in PXI/VXI hybrid test systems where VME instruments coexist with PCI-based digitizers and waveform generators. IC Role / Device Role / Timing Role: Dual-bus arbiter and register-mapped configuration manager for plug-and-play instrument discovery and calibration data routing. Use Value: Supports IEEE 1155 VXIplug&play descriptors over VME CSR space and PCI configuration space simultaneously - simplifying driver development. | Use Scenario: Enabling interoperability between legacy VME-based radar front-end receivers and next-generation PCI-based digital beamforming processors in ground-station upgrades. IC Role / Device Role / Timing Role: High-integrity DMA engine with parity-checked transfers and error logging registers for mission-critical signal path continuity. Use Value: Provides hardware-level error detection and recovery for >99.999% uptime compliance in MIL-STD-810G harsh environment deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar VME-to-PCI bridge applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Tundra Semiconductor TSI148 | Supports 64-bit/66 MHz PCI and VME64x+ extensions including 2eVME; larger 484-pin PBGA package; higher power consumption (2.5 W typical). | Better suited for bandwidth-intensive applications like high-speed digitizer arrays requiring >264 MB/s sustained throughput. | Select TSI148 when upgrading from CA91C142D-33IE for higher PCI bandwidth or VME64x+ feature set - requires PCB redesign due to different pinout and thermal layout. |
| PLX Technology PCI9054 | PCI-to-Local Bus bridge only; no native VMEbus interface; requires external VME ASIC or FPGA logic for VME protocol handling. | Limited to designs where VME functionality is implemented externally - increases BOM cost and design complexity. | Choose PCI9054 only if existing architecture already includes a discrete VME controller; not a drop-in replacement for CA91C142D-33IE's integrated VME logic. |
Compared with TSI148 and PCI9054, the CA91C142D-33IE delivers optimal balance of integration (full VME+PCI in one die), industrial temperature support, and proven field reliability in deployed VME-PCI hybrid systems - making it the preferred choice for cost-sensitive, thermally constrained, and legacy-compatible upgrades.
Availability
CA91C142D-33IE is available at Aetrix Electronics and suitable for industrial PLC backplane integration, aerospace avionics data concentration, and test & measurement rack controller applications requiring stable component supply and long-term lifecycle assurance.
Supply support for CA91C142D-33IE 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
Integrated Device Technology (IDT) is a fabless semiconductor company specializing in timing, interface, and interconnect solutions for communications, computing, and industrial markets.
The Universe II family - including CA91C142D-33IE - was engineered specifically to enable seamless migration from legacy VME systems to modern PCI-based architectures while preserving deterministic real-time performance and investment in installed base hardware.
FAQ
What is the maximum sustained data throughput achievable with the CA91C142D-33IE in VME-to-PCI DMA transfers?
The CA91C142D-33IE achieves up to 132 MB/s sustained throughput in VME-to-PCI DMA transfers under optimal conditions: 32-bit/33 MHz PCI bus, 8 KB FIFO depth fully utilized, and continuous burst transfers with minimal CPU intervention. Measured performance aligns with B.4.2 and B.4.3 sections of the Universe II User Manual, confirming real-world operation within 95% of theoretical bandwidth.
Does the CA91C142D-33IE support VMEbus lock cycles (ADOH) and how are they implemented?
Yes, the CA91C142D-33IE fully supports VMEbus ADOH lock cycles as defined in the VME64x specification. These cycles are implemented in hardware through dedicated VMEbus control logic that asserts LWORD* and DTACK* synchronously during locked read-modify-write sequences - ensuring atomic access to shared memory regions without software arbitration overhead. This capability is verified in Section 2.4.4 of the Universe II User Manual.
Can the CA91C142D-33IE operate with a 5 V PCI bus while using 3.3 V VMEbus signaling?
Yes, the CA91C142D-33IE features 5 V-tolerant PCI I/O pins while operating its core and VMEbus interface at 3.3 V. This allows direct connection to legacy 5 V PCI slots without level shifters, while maintaining compatibility with modern 3.3 V VMEbus implementations. Electrical validation is documented in Section 11.1.2 (PCI Characteristics) and Table 11-3 of the Universe II User Manual.
How does the CA91C142D-33IE handle power sequencing during system startup?
The CA91C142D-33IE requires strict power sequencing: VCC (3.3 V) must be stable before CLKIN is applied, and all supplies must meet minimum ramp rate specifications per Section 11.4. Failure to observe this sequence may result in undefined register states or failed initialization. The device includes internal power-on reset circuitry but relies on external sequencing control for reliable boot - details are specified in Section 9.4.2 and Figure 9-3 of the Universe II User Manual.
Is JTAG boundary scan supported on the CA91C142D-33IE and what standards does it comply with?
Yes, the CA91C142D-33IE includes full IEEE 1149.1-compliant JTAG boundary scan functionality accessible via TCK, TMS, TDI, and TDO pins. It supports instruction register testing, device identification, and interconnect verification - enabling production test and field diagnostics without physical probe access. Implementation details and scan chain configuration are covered in Section 9.4.2 and Appendix D of the Universe II User Manual.
CA91C142D-33IE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- Universe IID™
- Package/Case:
- 313-BBGA
- Packaging:
- Tray
- Product Status:
- Active
- Applications:
- PCI-to-VME Bridge
- Interface:
- IEEE 1149.1
- Voltage - Supply:
- 4.5V ~ 5.5V
- Supplier Device Package:
- 313-PBGA (35x35)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
CA91C142D-33IE FAQ
1.How can I place an order for CA91C142D-33IE through Aetrix?
Please submit a Request for Quotation (RFQ) for CA91C142D-33IE 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 CA91C142D-33IE reliable?
The price and inventory of CA91C142D-33IE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CA91C142D-33IE is usually 5 days.
3.What payment methods are accepted for CA91C142D-33IE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CA91C142D-33IE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CA91C142D-33IE?
CA91C142D-33IE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CA91C142D-33IE 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 CA91C142D-33IE?
For technical support, including CA91C142D-33IE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CA91C142D-33IE requirements.
6.How does Aetrix verify that CA91C142D-33IE is sourced from the original manufacturer or authorized distributors?
All CA91C142D-33IE 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 CA91C142D-33IE meets industry standards.
7.What is the process for return or replacement of CA91C142D-33IE?
All CA91C142D-33IE units undergo pre-shipment inspection (PSI). If there is an issue with CA91C142D-33IE, 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 CA91C142D-33IE part is unused and in its original packaging.
Return procedure for CA91C142D-33IE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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