My Inquiry
My Account
Analog Devices Inc. ADSP-21MOD815-000
- Part No.:
- ADSP-21MOD815-000
- Manufacturer:
- Analog Devices Inc.
- Category:
- DSP (Digital Signal Processors)
- Package:
- -
- Datasheet:
-
ADSP-21MOD815-000.pdf
- Description:
- 2181KST 4 MODEM CHIPSET
- Quantity:
- Payment:
- Shipping:
Inventory:11,520
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ADSP-21MOD815-000 from Analog Devices is a single-chip Internet gateway processor optimized for V.34/V.90 data/FAX modem implementation, integrating 32K × 24-bit program RAM, 32K × 16-bit data RAM, dual synchronous serial ports (SPORT0/SPORT1), and a 16-bit internal DMA port. It delivers 52 MIPS sustained performance at 19 ns instruction cycle time with 80 mW typical power dissipation in digital modem operation.
For engineers reviewing the ADSP-21MOD815-000 datasheet, ADSP-21MOD815-000 pinout, ADSP-21MOD815-000 application, or ADSP-21MOD815-000 equivalent, key selection criteria include on-chip memory configuration (160 KB total RAM), serial port multichannel support (24/32-channel SPORT0), low-power modes (Power-Down, Idle, Slow Idle), and ICE-Port™ emulator interface compatibility for in-system debugging.
Technical Context
The ADSP-21MOD815-000 extends the ADSP-2100 base architecture with dedicated modem functionality: dual serial ports supporting hardware companding (A-law/µ-law per G.711), programmable 16-bit interval timer with prescaler, and byte DMA controller for external overlay memory access. Its computational units-ALU, MAC (40-bit accumulator), and shifter-execute parallel operations per cycle including address generation, data move, and computation.
Memory architecture enables zero-overhead looping via internal loop counters and stacks; dual DAGs support simultaneous dual-operand fetches with modulo addressing for circular buffers. The device operates in Full Memory Mode (14-bit address, 24-bit data bus) or Host Mode (16-bit IDMA port), selected by Mode C pin at reset-no runtime reconfiguration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | ADSP-2100 family base with instruction set extensions for modem control and datapump functions |
| Performance | 52 MIPS sustained at 19 ns instruction cycle time; all instructions execute in single cycle |
| On-Chip Memory | 32K × 24-bit program RAM + 32K × 16-bit data RAM = 160 KB total SRAM; no external memory required for modem operation |
| Serial Interfaces | Two double-buffered SPORTs: SPORT0 supports 24/32-channel TDM; both support hardware companding and frameless/framed modes |
| Power Management | Three low-power modes: Power-Down (400 CLKIN-cycle wake-up), Idle, and Slow Idle (16/32/64/128× clock divisor) |
| System Interface | 16-bit IDMA port for transparent host access to on-chip RAM; byte DMA port for up to 4 MB external memory; ICE-Port™ for in-circuit emulation |
| Interrupt System | 11 interrupts: 6 external (configurable edge/level-sensitive), 5 internal (timer, SPORTs, BDMA, power-down); maskable except power-down and reset |
Pinout & Package
The ADSP-21MOD815-000 is housed in a 100-lead LQFP package (0.4 inch × 0.4 inch footprint) with multiplexed pins supporting Full Memory Mode (A13:0, D23:0) or Host Mode (IAD15:0, IWR, IRD, IAL, IS, IACK) based on Mode C pin state at reset.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RESET | Processor reset input | Active-low asynchronous reset; initializes all registers and sets default mode configuration |
| CLKIN / XTAL | Clock source input | Accepts external clock (TTL/CMOS) or quartz crystal; determines core timing reference |
| SPORT0 (TFS0, RFS0, DT0, DR0, SCLK0) | Synchronous serial port 0 interface | Configurable for framed/frameless operation; supports 3–16-bit word length and G.711 companding |
| SPORT1 (TFS1, RFS1, DT1, DR1, SCLK1) | Synchronous serial port 1 interface | Software-configurable; may be reassigned to IRQ0/IRQ1/Flag In/Flag Out while retaining serial clock generation |
| IAD15:0 / IWR / IRD / IAL / IS / IACK | IDMA port signals | Enable direct host access to on-chip RAM in Host Mode; IACK polarity depends on Mode D setting |
| PWD / PWDACK | Power-down control | PWD initiates hardware power-down; PWDACK asserts when device enters low-power state |
| EZ-Port (9 pins) | Emulation interface | ICE-Port™ compliant; supports in-target debugging, breakpoint insertion, and register/memory inspection without board removal |
Key Features
| Feature | Design Value |
|---|---|
| V.34/V.90 Modem Integration | Full datapump and controller functions implemented on-die-eliminates need for external modem ICs or FPGA logic |
| Dual Serial Port Flexibility | SPORT0 supports 24/32-channel TDM for multi-line gateway applications; SPORT1 offers interrupt/flag reassignment for system signaling |
| Zero-Overhead Looping | Hardware loop counters and stacks enable infinite loops without branch penalty-critical for real-time signal processing kernels |
| SRAM-Based Software Upgradability | Modem firmware resides in on-chip RAM; allows field updates for new standards (e.g., VoIP) without hardware change |
| Low-Power Operation Modes | Power-Down mode draws minimal current during idle periods; Slow Idle dynamically scales clock to match traffic load |
Applications
| DSL/Cable Modem Gateway | Voice over IP (VoIP) Terminal |
|---|---|
Use Scenario: Aggregating multiple analog phone lines into a broadband IP network using T1/E1 backhaul. IC Role / Device Role / Timing Role: Primary modem datapump and protocol controller handling V.90 modulation, echo cancellation, and AT command parsing. Use Value: Eliminates external DSP and memory components-reduces BOM cost and PCB area while maintaining 56 Kbps downstream throughput. | Use Scenario: Embedded residential gateway converting PSTN calls to SIP/RTP streams over Ethernet/Wi-Fi. IC Role / Device Role / Timing Role: Real-time audio codec execution (G.711, G.729), jitter buffer management, and packetization engine. Use Value: On-chip 160 KB RAM stores full codec libraries and voice buffers; dual SPORTs interface directly to SLIC and Ethernet MAC. |
| Industrial Remote Access Modem | Legacy System Protocol Bridge |
Use Scenario: Secure remote monitoring of SCADA systems via dial-up connection to legacy RTUs. IC Role / Device Role / Timing Role: Error-corrected (V.42) and compressed (V.42bis) data pump with watchdog-controlled auto-reconnect. Use Value: 80 mW typical power enables battery-backed operation; Power-Down mode extends runtime during idle polling intervals. | Use Scenario: Bridging RS-232 serial devices (PLCs, meters) to TCP/IP networks in building automation. IC Role / Device Role / Timing Role: Protocol translation engine executing Modbus RTU-to-TCP and ASCII framing conversion. Use Value: Programmable flag pins (PF0–PF7) provide hardware handshaking signals; IDMA port enables seamless integration with microcontroller hosts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Internet gateway processor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADSP-21MOD870 | Same ADSP-2100 core, identical pinout and memory map; differs only in minor revision-level firmware and qualification testing | Identical V.34/V.90 modem stack and host interface behavior; validated for same reference designs (e.g., ADSP-21mod870-EV1) | Select when requiring latest production lot with extended temperature screening or updated errata resolution |
| TMS320C549 | Fixed-point DSP with 16K × 16-bit RAM; lacks integrated modem software, dual SPORTs with TDM, and IDMA port | Requires external memory and custom firmware for modem functions; not drop-in compatible for V.90 datapump implementation | Choose only for cost-sensitive, non-V.90 applications where full modem integration is unnecessary |
Compared with ADSP-21MOD815-000, ADSP-21MOD870 offers identical hardware functionality with updated manufacturing process and qualification-ideal for new designs requiring long-term supply assurance. TMS320C549 demands significant firmware development effort and external components to achieve comparable modem capability, making it unsuitable as a direct alternative for integrated gateway applications.
Availability
ADSP-21MOD815-000 is available at Aetrix Electronics and suitable for DSL/cable modem gateways, VoIP terminals, industrial remote access modems, and legacy protocol bridges requiring stable component supply and long-lifecycle support.
Supply support for ADSP-21MOD815-000 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
Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, founded in 1965 and headquartered in Wilmington, MA.
The ADSP-21MODxx series was designed specifically for single-chip Internet gateway applications-integrating modem datapump, controller, memory, and system interfaces to replace multi-chip solutions in cost- and space-constrained embedded communications equipment.
FAQ
What is the primary function of the ADSP-21MOD815-000 in modem applications?
The ADSP-21MOD815-000 serves as a complete single-chip V.34/V.90 data/FAX modem solution, integrating both datapump (modulation/demodulation, echo cancellation) and controller (AT command parsing, error correction, compression) functions. Its on-chip 160 KB RAM eliminates external memory needs, and dual SPORTs interface directly to line interface circuits-making ADSP-21MOD815-000 ideal for compact, low-power gateway designs.
Does the ADSP-21MOD815-000 support hardware-based audio companding?
Yes, the ADSP-21MOD815-000 supports A-law and µ-law companding in hardware per CCITT G.711 standard on both SPORT0 and SPORT1. This offloads CPU cycles from software-based companding, enabling efficient voice encoding/decoding in VoIP terminal applications-directly leveraging ADSP-21MOD815-000's serial port peripherals without external codecs.
How does the ADSP-21MOD815-000 handle power management in battery-operated equipment?
The ADSP-21MOD815-000 implements three low-power modes: Power-Down (400 CLKIN-cycle wake-up), Idle, and Slow Idle with programmable clock divisors (16/32/64/128). Its 80 mW typical power dissipation in modem operation-combined with PWD/PWDACK signaling-enables reliable battery-backed remote access modems. These features are integral to ADSP-21MOD815-000's design for portable and energy-sensitive deployments.
Can the ADSP-21MOD815-000 be used without external memory?
Yes, the ADSP-21MOD815-000 contains 32K × 24-bit program RAM and 32K × 16-bit data RAM (160 KB total), sufficient to host full V.34/V.90 modem firmware and real-time buffers. Its architecture supports automatic booting from on-chip memory via the internal DMA port-confirming ADSP-21MOD815-000 operates as a true single-chip solution with no external memory required for standard modem operation.
Is the ADSP-21MOD815-000 compatible with Analog Devices' EZ-ICE emulator tools?
Yes, the ADSP-21MOD815-000 integrates on-chip ICE-Port™ emulation support with a 14-pin interface, fully compatible with ADSP-2100 Family EZ-ICE® hardware. This enables in-target debugging, up to 20 breakpoints, register/memory inspection, and C-source-level debugging without removing ADSP-21MOD815-000 from the target board-critical for validating modem firmware in final system configurations.
ADSP-21MOD815-000 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- -
- Interface:
- -
- Clock Rate:
- -
- Non-Volatile Memory:
- -
- On-Chip RAM:
- -
- Voltage - I/O:
- -
- Voltage - Core:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
ADSP-21MOD815-000 FAQ
1.How can I place an order for ADSP-21MOD815-000 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADSP-21MOD815-000 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 ADSP-21MOD815-000 reliable?
The price and inventory of ADSP-21MOD815-000 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADSP-21MOD815-000 is usually 5 days.
3.What payment methods are accepted for ADSP-21MOD815-000?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADSP-21MOD815-000 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADSP-21MOD815-000?
ADSP-21MOD815-000 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADSP-21MOD815-000 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 ADSP-21MOD815-000?
For technical support, including ADSP-21MOD815-000 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADSP-21MOD815-000 requirements.
6.How does Aetrix verify that ADSP-21MOD815-000 is sourced from the original manufacturer or authorized distributors?
All ADSP-21MOD815-000 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 ADSP-21MOD815-000 meets industry standards.
7.What is the process for return or replacement of ADSP-21MOD815-000?
All ADSP-21MOD815-000 units undergo pre-shipment inspection (PSI). If there is an issue with ADSP-21MOD815-000, 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 ADSP-21MOD815-000 part is unused and in its original packaging.
Return procedure for ADSP-21MOD815-000:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADSP-21MOD815-000 Tags
-
TMS320C5535AZAY10
Texas Instruments
-
TMS320VC5501PGF300
Texas Instruments
-
ADSP-BF592KCPZ
Analog Devices Inc.
-
ADAU1463WBCPZ150
Analog Devices Inc.
-
TMS320VC5402PGE100
Texas Instruments
-
ADAU1701JSTZ-RL
Analog Devices Inc.
-
ADAU1701JSTZ
Analog Devices Inc.
-
TMS320VC5502PGF300
Texas Instruments
-
ADAU1462WBCPZ300RL
Analog Devices Inc.
-
ADAU1452KCPZRL
Analog Devices Inc.
-
ADAU1452WBCPZ-RL
Analog Devices Inc.
-
TMS320C6747DZKB3
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
