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Texas Instruments USBN9604SLBX-TI
- Part No.:
- USBN9604SLBX-TI
- Manufacturer:
- Texas Instruments
- Category:
- Controllers
- Package:
- -
- Datasheet:
-
USBN9604SLBX-TI.pdf
- Description:
- USBN9604 USBN9604
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Product details
Overview
USBN9604SLBX-TI from National Semiconductor is a full-speed USB 1.1 node controller IC integrating transceiver, 3.3V regulator, Serial Interface Engine (SIE), seven endpoint FIFOs (1×8-byte control + 6×64-byte data), 8-bit parallel/MICROWIRE interface, and enhanced DMA support. It operates at 5V or 3.3V, uses a 24 MHz crystal, and targets embedded host-peripheral bridge applications in industrial instrumentation and legacy PC peripheral controllers.
For engineers reviewing the USBN9604SLBX-TI datasheet, USBN9604SLBX-TI pinout, USBN9604SLBX-TI application, or USBN9604SLBX-TI equivalent, this page delivers verified technical context, package-specific pin mapping, real-world use cases, and validated alternative options for USB 1.1 node controller selection.
Technical Context
The USBN9604SLBX-TI implements a complete USB 1.1-compliant Serial Interface Engine (SIE) with Physical Layer (PHY) and Media Access Controller (MAC), including NRZI decoding, bit stuffing/unstuffing, CRC generation/checking, and clock recovery from 48 MHz (doubled from 24 MHz XIN). Its transceiver meets USB 1.1 Chapter 7 electrical requirements with differential and single-ended receivers plus current-source transmitter.
It supports three interface modes via MODE1–MODE0 pins: non-multiplexed parallel (Intel-style), multiplexed parallel (8051-style), and MICROWIRE/PLUS serial. Endpoint Pipe Controller (EPC) manages seven pipes-EP0 (bidirectional control) and six unidirectional endpoints (three TX, three RX)-each with dedicated FIFO and programmable PID toggling, NAK recovery, and STALL handling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| USB Compliance | USB Specification v1.0 and v1.1 full-speed (12 Mbps) node device only - no host capability. |
| Endpoint Architecture | Seven endpoint pipes: EP0 (8-byte bidirectional control FIFO) + three 64-byte TX FIFOs + three 64-byte RX FIFOs - enables concurrent interrupt/bulk/isochronous transfers. |
| DMA Support | Enhanced Automatic DMA (ADMA) mode - transfers up to 16 KB (256 × 64-byte packets) without CPU intervention; includes automatic PID toggle, NAK recovery, and error detection. |
| Interface Options | Configurable via MODE1/MODE0: non-multiplexed 8-bit parallel (A0/AD0–7), multiplexed 8-bit parallel (ALE/AD0–7), or MICROWIRE/PLUS serial (SK/SI/SO) - eliminates need for external glue logic. |
| Power Supply | Single 5V or 3.3V operation; integrated 3.3V regulator (V3.3 pin) powers internal transceiver and external 1.5 kΩ D+ pull-up - simplifies power design in bus-powered or self-powered systems. |
| Timing Reference | 24 MHz fundamental crystal oscillator (XIN/XOUT); internal PLL generates 48 MHz for SIE and 12 MHz recovered clock - eliminates external clock generator IC. |
| Reset & Clock | Hardware RESET# (active-low) with 214-cycle stall on CLKOUT; power-on reset initializes all registers and stalls CLKOUT - ensures deterministic startup before firmware access. |
Pinout & Package
USBN9604SLBX-TI is housed in a 28-pin CSP (Chip Scale Package) with 0.5 mm pitch, optimized for space-constrained embedded designs. Pin functions are defined by MODE1–MODE0 configuration and include dual-role signals (e.g., WR/SK, A0/ALE/SI, D0/SO) supporting parallel and serial interfaces without external multiplexing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RESET# | Hardware Reset Input | Active-low asynchronous reset that forces all registers to default values and stalls CLKOUT for 214 XIN cycles - enables reliable cold-start and recovery. |
| XIN / XOUT | Crystal Oscillator I/O | Accepts 24 MHz fundamental crystal (or external 24 MHz clock on XIN only) - provides timing reference for internal PLL generating 48 MHz SIE clock. |
| CLKOUT | Programmable Clock Output | Configurable output (default 4 MHz post-reset); disabled or set to 12/24/48 MHz via CCONF register - supplies clock to external logic or debug tools. |
| D+ / D− | USB Differential Data Lines | Integrated transceiver I/O; D+ requires external 1.5 kΩ pull-up to V3.3 - directly connects to USB upstream port without level-shifting or external PHY. |
| V3.3 | 3.3V Regulator Output/Input | Provides regulated 3.3V for transceiver and D+ pull-up (when enabled); accepts external 3.3V supply when regulator is disabled - supports both 5V and 3.3V system integration. |
| MODE1, MODE0 | Interface Mode Select | Hard-wired to VCC/GND to select non-multiplexed parallel (00), multiplexed parallel (01), or MICROWIRE (10) - determines signal mapping on shared pins (WR/SK, A0/ALE/SI, etc.). |
| DRQ / DACK | DMA Request/Acknowledge | DRQ# asserts when FIFO ready for DMA transfer; DACK# acknowledges DMA cycle completion - enables zero-CPU-overhead bulk data movement. |
| INTR# | Configurable Interrupt Output | Software-selectable active-high push-pull, active-low push-pull, or open-drain - adapts to MCU interrupt input requirements without external buffer. |
Key Features
| Feature | Design Value |
|---|---|
| Fully static HALT mode | Zero-power suspend state with asynchronous wake-up via USB event (e.g., resume, reset) - extends battery life in bus-powered portable devices. |
| Integrated 3.3V regulator | Eliminates external LDO; powers transceiver and D+ pull-up from 5V supply - reduces BOM count and PCB area in cost-sensitive designs. |
| Automatic PID toggling & NAK recovery | Hardware-managed data packet sequencing and retry on NAK - removes firmware overhead for reliable bulk/isochronous transfers. |
| Power-up reset & startup delay counter | Internal 214-cycle delay after VCC rise ensures stable clock before register access - prevents initialization race conditions without external RC circuit. |
| Tri-mode microcontroller interface | Single IC supports Intel 8080-style, 8051-style, and MICROWIRE buses - enables reuse across diverse MCU platforms without redesign. |
Applications
| Industrial Data Acquisition | Legacy PC Peripheral Adapter |
|---|---|
Use Scenario: USB-connected temperature sensor module in factory floor PLC rack, reporting readings every 100 ms via bulk transfer. IC Role / Device Role / Timing Role: USBN9604SLBX-TI acts as full-speed USB device node, managing D+/- signaling, endpoint FIFO buffering, and automatic ACK/NAK handshaking per USB 1.1 spec. Use Value: Integrated transceiver and 64-byte TX/RX FIFOs enable deterministic 12 Mbps data delivery without CPU polling; HALT mode reduces idle power to <100 µA. | Use Scenario: ISA-to-USB converter board enabling legacy industrial I/O cards to connect to modern PCs via USB 2.0 hubs. IC Role / Device Role / Timing Role: USBN9604SLBX-TI serves as USB device controller, translating parallel ISA read/write cycles into USB IN/OUT token responses using non-multiplexed interface mode. Use Value: On-chip 8-bit parallel interface with A0/AD0–7 mapping eliminates address decoder logic; ADMA mode moves 64-byte sensor frames without CPU intervention. |
| Embedded Test Equipment | USB Audio Control Interface |
Use Scenario: Handheld multimeter with USB upload of measurement logs to PC; powered solely from USB bus. IC Role / Device Role / Timing Role: USBN9604SLBX-TI functions as bus-powered USB device, using internal 3.3V regulator to drive transceiver and D+ pull-up while accepting 5V VCC from USB port. Use Value: Single-supply operation and low standby current (<50 µA in HALT) extend battery-free usability; built-in reset timing ensures robust enumeration after cable insertion. | Use Scenario: USB MIDI controller with 16 rotary encoders and 8 buttons, sending control change messages over interrupt endpoints. IC Role / Device Role / Timing Role: USBN9604SLBX-TI implements USB device stack at silicon level, handling SETUP/IN/OUT tokens, endpoint 1–6 interrupt transfers, and automatic PID management. Use Value: Dedicated 64-byte FIFOs per interrupt endpoint guarantee jitter-free delivery of encoder position updates at 10 ms intervals; MICROWIRE interface simplifies connection to low-pin-count MCU. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB 1.1 node controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| USBN9603SLBX-TI | Identical functionality and pinout; differs only in reset mechanism for clock generation circuit - USBN9604SLBX-TI uses hardware RESET# to stall CLKOUT during synchronization. | Both support same USB 1.1 device roles; USBN9604SLBX-TI preferred where precise CLKOUT timing control during reset is required. | Select USBN9604SLBX-TI when DLL synchronization stability during hardware reset is critical; otherwise USBN9603SLBX-TI is functionally interchangeable. |
| Cypress CY7C63xxx series | USB 1.1 device controller with integrated RAM, different register map, no built-in 3.3V regulator, and proprietary development toolchain. | Targets similar embedded USB peripherals but requires external 3.3V supply and custom firmware architecture - not drop-in compatible. | Choose CY7C63xxx only when migrating existing Cypress-based designs; USBN9604SLBX-TI offers superior analog integration and simpler power design. |
Compared with USBN9603SLBX-TI, the USBN9604SLBX-TI provides tighter CLKOUT synchronization during hardware reset, making it preferable for time-critical USB enumeration. Against Cypress CY7C63xxx, it delivers lower system-level BOM cost via integrated regulator and transceiver, though with less on-chip memory for descriptor storage.
Availability
USBN9604SLBX-TI is available at Aetrix Electronics and suitable for industrial data acquisition, legacy peripheral adaptation, embedded test equipment, and USB audio control interfaces requiring stable component supply across long-lifecycle programs.
Supply support for USBN9604SLBX-TI 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
National Semiconductor was a U.S.-based semiconductor company specializing in analog and interface ICs, acquired by Texas Instruments in 2011. Its legacy USB controller portfolio emphasized high-integration, low-power, and ease-of-use for embedded USB device design.
The USBN9604SLBX-TI belongs to National's USB Node Controller product line, designed specifically for cost-sensitive, space-constrained embedded systems needing full-speed USB 1.1 device functionality without external PHY or voltage regulation.
FAQ
What is the primary function of the USBN9604SLBX-TI in a USB system?
The USBN9604SLBX-TI functions exclusively as a USB 1.1 full-speed (12 Mbps) device node controller - it cannot operate as a host. It handles physical layer signaling (D+/D−), protocol processing (SIE), endpoint management (seven pipes), and host-facing interface (parallel or MICROWIRE), enabling microcontrollers to add USB connectivity without software USB stack implementation. The USBN9604SLBX-TI integrates all essential analog and digital blocks required for USB device enumeration and data transfer.
Does the USBN9604SLBX-TI support USB 2.0 High-Speed mode?
No, the USBN9604SLBX-TI supports only USB Specification versions 1.0 and 1.1 at full speed (12 Mbps). It lacks the transceiver architecture, signaling compliance, and protocol logic required for USB 2.0 High-Speed (480 Mbps) operation. Its design targets cost-optimized, legacy-compatible USB device implementations where full-speed bandwidth suffices - such as HID peripherals, data loggers, and industrial control interfaces. The USBN9604SLBX-TI does not negotiate or respond to high-speed chirp sequences.
How does the integrated 3.3V regulator in the USBN9604SLBX-TI simplify system design?
The USBN9604SLBX-TI's integrated 3.3V regulator (output on V3.3 pin) powers the internal USB transceiver and the mandatory 1.5 kΩ D+ pull-up resistor directly from a 5V supply, eliminating the need for an external LDO. When operating from 3.3V VCC, the regulator is disabled and V3.3 becomes an input - providing flexibility across both supply domains. This integration reduces component count, PCB area, and power path complexity, especially in bus-powered applications where efficiency and footprint are critical. The USBN9604SLBX-TI requires only a 1 µF tantalum capacitor on V3.3 for stability.
What are the key differences between USBN9604SLBX-TI and USBN9603SLBX-TI?
The USBN9604SLBX-TI and USBN9603SLBX-TI are functionally identical except for their reset behavior related to clock generation. In the USBN9604SLBX-TI, assertion of the RESET# pin causes CLKOUT to stall for 214 XIN clock cycles while the internal DLL synchronizes to the external reference clock. The USBN9603SLBX-TI uses a different reset mechanism for its clock circuit. All other features - pinout, register set, DMA, endpoints, and interface modes - are fully compatible. Thus, USBN9604SLBX-TI is selected when precise CLKOUT timing control during hardware reset is required.
Can the USBN9604SLBX-TI operate in a purely 3.3V system without using its internal regulator?
Yes, the USBN9604SLBX-TI supports pure 3.3V operation. In this configuration, the internal 3.3V regulator is disabled, and the V3.3 pin must be driven externally with a stable 3.3V supply to power the transceiver and D+ pull-up. VCC is supplied with 3.3V, and all I/O levels (including parallel interface and RESET#) are referenced to this supply. The USBN9604SLBX-TI maintains full functionality - including 24 MHz crystal operation, SIE, DMA, and endpoint control - under 3.3V bias, meeting all DC and AC specifications in the datasheet's 3.3V parameter tables.
USBN9604SLBX-TI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- -
- Programmable:
- Not Verified
- Protocol:
- -
- Function:
- -
- Interface:
- -
- Standards:
- -
- Voltage - Supply:
- -
- Current - Supply:
- -
- Operating Temperature:
- -
- Supplier Device Package:
- -
- Grade:
- -
- Qualification:
- -
USBN9604SLBX-TI FAQ
1.How can I place an order for USBN9604SLBX-TI through Aetrix?
Please submit a Request for Quotation (RFQ) for USBN9604SLBX-TI 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 USBN9604SLBX-TI reliable?
The price and inventory of USBN9604SLBX-TI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for USBN9604SLBX-TI is usually 5 days.
3.What payment methods are accepted for USBN9604SLBX-TI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for USBN9604SLBX-TI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for USBN9604SLBX-TI?
USBN9604SLBX-TI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your USBN9604SLBX-TI 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 USBN9604SLBX-TI?
For technical support, including USBN9604SLBX-TI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your USBN9604SLBX-TI requirements.
6.How does Aetrix verify that USBN9604SLBX-TI is sourced from the original manufacturer or authorized distributors?
All USBN9604SLBX-TI 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 USBN9604SLBX-TI meets industry standards.
7.What is the process for return or replacement of USBN9604SLBX-TI?
All USBN9604SLBX-TI units undergo pre-shipment inspection (PSI). If there is an issue with USBN9604SLBX-TI, 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 USBN9604SLBX-TI part is unused and in its original packaging.
Return procedure for USBN9604SLBX-TI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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