Key Selection Information
| Selection Parameter | Confirmed Information |
|---|---|
| Ethernet | 10BASE-T / 100BASE-TX IEEE 802.3 PHY |
| MAC Interfaces | MII or RMII; SNI configurable for 10 Mb/s |
| Supply / Logic | 3.3 V technology and MAC interface |
| PHY Features | Auto-negotiation, Auto-MDIX, adaptive equalization |
| Diagnostics | JTAG, packet BIST, programmable LEDs |
| Power | Less than 270 mW typical stated feature |
| Temperature | −40°C to +85°C for exact I-grade order code |
| Exact Package / Packing | LQFP (PT), 48 pins, 7 mm × 7 mm; 1000-piece large tape and reel |
Product Overview
DP83848IVVX/NOPB is the industrial-temperature reel version of TI’s DP83848I single-port 10/100 Ethernet PHY. It connects a 10/100BASE-TX physical interface to an embedded MAC through MII or RMII and also retains SNI support for legacy 10 Mb/s serial designs.
The exact I-grade order code matters because the same DP83848 family includes commercial and wider-temperature variants. TI lists DP83848IVVX/NOPB for −40°C to +85°C, 1000-piece large tape-and-reel packaging and the 48-pin LQFP footprint.
For an embedded design, interface selection must be resolved before layout: RMII needs a 50 MHz reference/strap configuration while normal MII uses the conventional 25 MHz PHY clocking. Strap pins also transition into output functions after reset, so pull networks need to meet the latch timing.
For related devices, see HKEQGOO’s Ethernet Transceivers category.
Technical Specifications
| Parameter | Verified Information |
|---|---|
| Manufacturer | Texas Instruments |
| Exact MPN | DP83848IVVX/NOPB |
| Ethernet | 10BASE-T / 100BASE-TX IEEE 802.3 PHY |
| MAC Interfaces | MII or RMII; SNI configurable for 10 Mb/s |
| Supply / Logic | 3.3 V technology and MAC interface |
| PHY Features | Auto-negotiation, Auto-MDIX, adaptive equalization |
| Diagnostics | JTAG, packet BIST, programmable LEDs |
| Power | Less than 270 mW typical stated feature |
| Temperature | −40°C to +85°C for exact I-grade order code |
| Exact Package / Packing | LQFP (PT), 48 pins, 7 mm × 7 mm; 1000-piece large tape and reel |
| Manufacturer Status | Active / Production |
| Part Marking | DP83848VV VBI |
Functional Highlights
MII/RMII flexibility is useful only if the clock/strap scheme is designed correctly
RMII reduces MAC pin count but changes the reference-clock requirement. Strap resistors must establish configuration early enough at reset without later interfering with the pin’s functional role.
Auto-MDIX and integrated PHY functions reduce external logic, not magnetics/layout requirements
The PHY handles negotiation and pair crossover internally, but transformer selection, termination, controlled-impedance routing and chassis/ESD layout still determine link robustness.
Design Considerations
- Choose MII or RMII before schematic/layout freeze and follow the corresponding clock/reset timing.
- Treat strap pins as dual-purpose nodes; verify resistor values against both latch thresholds and their post-reset output functions.
- Keep MDI traces short, impedance-controlled and symmetric through the magnetics; separate noisy digital clock routing from the analog line interface.
Product Status and Exact Order Code
Manufacturer status: Active / Production
Texas Instruments lists DP83848IVVX/NOPB as Active / Production; LQFP (PT), 48 pins; 1000-piece large tape and reel; Level-3-260C-168 HR; −40°C to +85°C; marking DP83848VV / VBI.
Related Engineering Resources
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