CS4630-CM - CrystalClear PCI Audio Accelerator | Cirrus Logic
MPN： CS4630-CM ✗ 停產CS4630-CM 概覽
A PCI audio accelerator is an interface integrated circuit that manages audio data movement between a host computer's PCI bus and audio codecs or other audio peripherals. Its role within the broader hierarchy is an interface IC and, more specifically, an audio interface device. Legacy compatibility support distinguishes the CS4630-CM from basic modern audio controllers by allowing older operating environments to interact with PCI-based audio hardware.
The verified electrical information includes operating test conditions of 0°C to 70°C, with PCIVDD and CRYVDD at 3.3 V, CVDD at 2.5 V, and VDD5REF at 5 V. The datasheet identifies PCI signal characteristics with a 3.3 V logic-high level, a 0 V logic-low level, and a 1.4 V reference level. It also documents dedicated second AC'97 data-input, bit-clock, and link-clock functions.
The CS4630-CM supports a primary and secondary AC'97 audio-link arrangement, with dedicated pins for second AC'97 data input, bit clock, and serial audio traffic. This architecture is appropriate for legacy PCI multimedia adapters, industrial computers, and specialized embedded systems that retain AC'97 codec connections while requiring the CS4630's documented compatibility capabilities.
Typical engineering uses include DOS-compatible PCI sound cards, industrial PCI audio subsystems, legacy embedded-computer upgrades, and audio adapters requiring a dedicated hardware accelerator. Because the part is reported as obsolete or end-of-life, procurement should emphasize authorized inventory, traceability, and functional validation rather than treating new design adoption as the default.
A critical design consideration is package verification. The part is documented as a 128-MQFP, also identified as a 128-BFQFP in MS-022, rather than a modern QFN package. PCB footprints, pin numbering, and soldering process requirements must therefore be checked against the original package drawing before assembly or replacement.
This product page consolidates the verified manufacturer and distributor information, observed pricing, lifecycle evidence, package data, technical operating conditions, and application guidance for engineers evaluating the obsolete CS4630-CM PCI audio accelerator.
直接替換替代品，適用於 CS4630-CM — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此產品無可直接替換的替代品。
申請替代品CS4630-CM 最大額定值與電氣特性
| Product Type | PCI audio accelerator |
| Product Family | CrystalClear SoundFusion |
| Host Interface | PCI |
| Audio Interface | AC'97 |
| Legacy Compatibility | Real-mode DOS compatibility |
| PCIVDD Test Voltage | 3.3 V |
| CRYVDD Test Voltage | 3.3 V |
| CVDD Test Voltage | 2.5 V |
| VDD5REF Test Voltage | 5 V |
| PCI Logic High | 3.3 V |
| PCI Logic Low | 0 V |
| Reference Level | 1.4 V |
| 工作溫度 | 0°C to 70°C |
| 封裝 | 128-MQFP |
| Alternate Package Description | 128-BFQFP |
| Package Body Dimensions | 14 mm × 20 mm × 2.85 mm |
| Package Outline | MS-022 |
| 安裝類型 | Surface mount |
| 腳位數 | 128 pins |
CS4630-CM ms-022 腳位配置指南
CS4630-CM（ms-022 封裝）的腳位配置。 此數位 IC 包含 GPIO、通訊介面（UART、SPI、I2C）與電源腳位。替代腳位功能與配置選項請參閱製造商資料表。對嵌入式系統設計與 PCB 佈局至關重要。
無詳細腳位定義資料： CS4630-CM.
請參閱 資料表 以查看完整腳位配置。
典型應用
CS4630-CM 適用於 6 應用s: Legacy PCI Sound Cards, Industrial PCI Audio Subsystems, AC'97 Audio Adapter Retrofits, DOS-Compatible Embedded Computers, Legacy Multimedia Adapter Repair, Specialized PCI Audio Equipment.
Legacy PCI Sound Cards
The CS4630-CM is suited to a legacy PCI sound card because it is explicitly a CrystalClear SoundFusion PCI audio accelerator and supports real-mode DOS compatibility within PCI-only audio subsystems. A repaired or redesigned adapter can use the accelerator as the host-facing audio controller when the original board architecture already uses its 128-MQFP footprint and AC'97 peripheral connections. The relevant advantage is compatibility with an established PCI software and hardware environment rather than performance for modern systems. Because the package is reported obsolete, engineers should preserve the original pinout, rail arrangement, and clock topology exactly. No new-design claim should be based solely on the existence of current distributor inventory.
Industrial PCI Audio Subsystems
The CS4630-CM can support an industrial PCI audio subsystem that retains legacy operating-system and codec requirements. Its documented real-mode DOS compatibility is the decisive feature for equipment emulating older host environments, while the PCI interface and secondary AC'97 link support provide dedicated paths for audio data. The stated 0°C-to-70°C operating range should be checked against the actual enclosure temperature before qualification. Verification must also include the 3.3 V, 2.5 V, and 5 V test conditions, the 128-MQFP land pattern, and the legacy application drivers. Because no confirmed drop-in successor was found, repair is generally more realistic than fresh platform adoption.
AC'97 Audio Adapter Retrofits
The CS4630-CM is appropriate for retrofitting a PCI-based audio adapter that still terminates audio through AC'97 codecs. The manufacturer datasheet identifies dedicated second AC'97 data-input, bit-clock, and link-clock signals, indicating support for more than one codec-oriented audio path. Such a design can retain existing codecs and analog circuitry while adding or restoring host-side PCI acceleration. The exact pin map must be taken from the complete manufacturer document because the verified excerpts do not enumerate all 128 pins. An engineer should also confirm clock source, codec timing, analog input and output assignments, and software compatibility before ordering. The part's obsolete status makes traceability and long-term supply planning important.
DOS-Compatible Embedded Computers
The CS4630-CM fits a DOS-compatible embedded computer only when the system intentionally depends on real-mode DOS behavior inside a PCI-only audio subsystem. This is a specific legacy-compatibility requirement rather than a general-purpose recommendation for current embedded platforms. The accelerator can preserve the interaction between a host PCI bus and AC'97 audio hardware while avoiding an immediate software migration. Its 128-MQFP package requires adequate board area and careful assembly planning, and the documented 0°C-to-70°C range limits harsh-environment use. Because the product is obsolete or end-of-life, production continuation should include obsolescence planning, approved-supplier controls, and a board redesign path before the remaining inventory is exhausted.
Legacy Multimedia Adapter Repair
The CS4630-CM is relevant to repair and restoration of a legacy PCI multimedia adapter whose original controller failed and whose board still contains the matching 128-MQFP footprint. Because the part is a purpose-built PCI audio accelerator rather than a general codec, restoration can preserve the adapter's established bus behavior, legacy DOS compatibility, and AC'97 subsystem. The repair should begin by confirming the board revision, original package markings, supply voltages, clocking, and thermal condition. Current availability helps maintenance teams source replacement silicon, but the spread between verified distributor prices and the obsolete lifecycle designation calls for careful inspection and traceability. A failed accelerator may also indicate damaged surrounding power or signal components.
Specialized PCI Audio Equipment
The CS4630-CM can serve in specialized PCI audio equipment where a legacy-compatible host bus and AC'97 codec architecture are intentional requirements. Examples include controlled test systems, industrial diagnostic platforms, and audio subsystems maintained for long-lived software. The controller's multi-rail operating conditions—3.3 V PCIVDD, 3.3 V CRYVDD, 2.5 V CVDD, and 5 V VDD5REF—must be reproduced carefully. The 128-MQFP footprint also requires a land pattern and assembly process consistent with the original MS-022 package. For new specialized equipment, engineers should weigh a redesign against the obsolete CS4630-CM unless preserving an existing bus or software environment has substantial value.
工程參考資料，適用於 CS4630-CM — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 |
|---|---|
| Package | 128-MQFP |
| Brand | Cirrus Logic |
| Product Type | PCI audio accelerator |
| Host Interface | PCI |
| Audio Interface | AC'97 |
| Legacy Compatibility | Real-mode DOS compatibility |
| Supply Conditions | PCIVDD 3.3 V, CRYVDD 3.3 V, CVDD 2.5 V, VDD5REF 5 V |
| Operating Temperature | 0°C to 70°C |
| Lifecycle Status | Obsolete or end-of-life |
| Verified Unit Price | $5.4964 as of 2026-10-29 |
主要差異化特點
- Documented legacy operating-system support (對比CS4624)
- Purpose-built PCI audio acceleration (對比Modern general-purpose audio interface)
- Documented multi-rail legacy architecture (對比Single-rail modern interface)
設計說明
Do not treat the CS4630-CM as a generic MQFP or assume that another Cirrus Logic audio controller can be substituted. The verified package is a 128-MQFP, also identified as a 128-BFQFP under MS-022, and the complete 128-pin assignment is not present in the supplied excerpts. Before ordering or replacing the device, compare the original board land pattern, pin numbering, power rails, grounds, clock connections, PCI interface signals, and AC'97 functions against the manufacturer datasheet. A mechanically similar square package with 128 leads is not sufficient evidence of drop-in compatibility.
Preserve the documented multi-rail architecture when repairing or redesigning around the CS4630-CM. The manufacturer test conditions specify PCIVDD at 3.3 V, CRYVDD at 3.3 V, CVDD at 2.5 V, and VDD5REF at 5 V, with dedicated ground references listed in the indexed characteristics. Validate sequencing, decoupling, voltage tolerance, and grounding against the complete datasheet rather than deriving a single-rail solution from these test conditions. Incorrect rail distribution can damage a legacy controller even when its package and pin count are correct.
For an existing legacy PCI audio board, make the replacement-layout decision from the original artwork and package drawing rather than from the web page diagram. Route PCI and AC'97 signals according to the manufacturer's pin descriptions and system reference material, keep return paths continuous, and preserve the original clock topology. Because the device is obsolete and no verified pin-compatible replacement was found, retain a known-good board as a hardware reference and validate the first article electrically before scaling repair volume.
合規資訊
The verified web data does not provide explicit RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declarations for CS4630-CM. These fields remain unknown rather than inferred from the component's age.
