Ksz80 Ob S4lv02 Datasheet __hot__ (2026)

The "KSZ80" series (specifically the KSZ8081MNX/RNB transceivers) features several "interesting" capabilities designed to lower system costs and simplify debugging.

The most notable features often highlighted in the Microchip KSZ8081 datasheets include:

LinkMD® TDR-based Cable Diagnostics: This utilizes Time-Domain Reflectometry (TDR) to identify faulty copper cabling, specifically detecting opens, shorts, and impedance mismatches.

Parametric NAND Tree Support: Provides a simple mechanism for detecting manufacturing faults (like open pins or shorts) between the chip’s I/Os and the PCB.

Integrated LDO Regulator: The chip includes a built-in 1.2V regulator to power its core, allowing the entire device to operate from a single 3.3V supply.

On-Chip Termination: It includes built-in termination resistors for differential pairs, which reduces the need for external components and simplifies board layout.

Flexible I/O Voltage: Supports digital I/O voltages of 1.8V, 2.5V, or 3.3V, allowing it to interface directly with various host controllers without level shifters.

Quiet/Low-Power Modes: Features standard power-down and Energy-Detect Power-Down, which reduces consumption when the link is idle. Summary of Specifications Specification Speed 10Base-T/100Base-TX (10/100 Mbps) Interface MII (MNX version) or RMII v1.2 (RNB version) ESD Protection ±6 kV (HBM) on MDI pins Package 32-pin QFN (5mm x 5mm) Operating Temp

Commercial (0°C to +70°C) or Industrial (-40°C to +85°C) KSZ8081MNX/RNB Data Sheet - Microchip Technology

The KSZ80 series, developed by Microchip Technology , consists of high-performance 10/100BASE-TX Ethernet physical layer transceivers (PHY) designed for low power consumption and compact board space. The specific designation "KSZ80 OB S4LV02" typically refers to custom-labeled or assembly-specific markings for the KSZ8001 or KSZ8081 family of transceivers often found in industrial networking equipment. KSZ8081MNX/RNB Data Sheet - Microchip Technology

The KSZ80_0B_S4LV0.2 is a specific LED/LCD TV Scaler PCB Board (or Panel Scaler Board) used in television displays. Key Specifications & Identification Part Type: Scaler Board / Panel Scaler PCB.

PCB Number: KSZ80_0B_S4LV0.2 (sometimes written with underscores or hyphens as KSZ80-0B-S4LV0.2).

Application: It is a critical component for processing video signals for the LED/LCD panel. Technical and Installation Notes

Professional Handling Required: This board typically requires professional installation using an LED Panel bonding machine (specifically for COF punching). It is not considered a user-replaceable part without specialized industrial equipment.

Originality: When sourcing this part, ensure it is a 100% original match to the PCB number to maintain the TV's original display quality.

Suppliers: This part is often stocked by specialized electronics suppliers like Great Bharat Electronics, who test these units under real TV simulation conditions. Buy Original LED TV Scaler PCB Board KSZ80-0B-S4LV0.2

✅ Type of Part. LED/LCD Scaler Board (Panel Scaler PCB) Number KSZ80_0B_S4LV0.2. 🔒 Assurance of Originality. This product is 100% Great Bharat Electronics Buy Original LED TV Scaler PCB Board KSZ80-0B-S4LV0.2

✅ Type of Part. LED/LCD Scaler Board (Panel Scaler PCB) Number KSZ80_0B_S4LV0.2. 🔒 Assurance of Originality. This product is 100% Great Bharat Electronics

Exam: KSZ80 OB S4LV02 — Advanced Technical Examination Instructions: Answer all questions. Show calculations and reasoning where applicable. Use SI units. Total points: 100.

Section A — Fundamental understanding (20 points)

1. (5 pts) Give a concise functional summary (3–4 sentences) of a typical Ethernet PHY/switch IC datasheet, listing the main features you would expect to find.
2. (5 pts) Explain the difference between a PHY, a MAC, and a switch IC. Give one example use-case for each.
3. (10 pts) Describe the typical blocks shown in a block diagram of a multi-port Ethernet switch IC (e.g., MACs, PHYs, switch fabric, MDIO, CPU interface, VLAN engine, QoS). For each block, provide the primary function and at least one key parameter or register-related control.

Section B — Electrical characteristics & power (20 points) 4. (8 pts) A datasheet specifies VDD = 3.3 V ±5% and an absolute max of 3.6 V. Explain the difference between recommended operating range and absolute maximum ratings, and describe the risks of operating at the absolute max. 5. (6 pts) Given the device draws 250 mA from 3.3 V at full load, compute power dissipation. If the thermal resistance junction-to-ambient (RθJA) = 45 °C/W and ambient temperature is 50 °C, estimate junction temperature. State whether this is within typical maximum junction rating of 125 °C. 6. (6 pts) The datasheet lists IO voltage tolerant inputs up to 5 V and specifies input clamp current of ±20 mA when input exceeds VDD. Explain proper input protection design to prevent latch-up or damage when interfacing a 5 V signal to the device.

Section C — Timing, interfaces, and signal integrity (20 points) 7. (6 pts) Define the following timing terms usually found in datasheets: tR (rise time), tF (fall time), propagation delay, and setup/hold times. Give typical units and why each matters for high-speed Ethernet signaling. 8. (8 pts) The Ethernet Rx differential pair requires APL (allowed peak-to-peak) common-mode range and a specified differential impedance of 100 Ω. Explain PCB layout guidelines to maintain impedance and minimize reflections between the magnetics and PHY. 9. (6 pts) For an MDIO interface operating at 2.5 MHz, the datasheet specifies maximum tSU (setup) = 100 ns and tH (hold) = 50 ns. Draw or describe the timing window relative to the MDIO clock and explain consequences of violating those timings. ksz80 ob s4lv02 datasheet

Section D — Registers, configuration, and software (20 points) 10. (6 pts) A register map shows a control register at address 0x00 with bits: bit 15 = reset (self-clearing), bit 12 = speed select (0=10/100, 1=1000), bit 8 = loopback enable. Describe initialization sequence after power-up to enable Gigabit mode, bring the device out of reset, and enable auto-negotiation. 11. (8 pts) Explain how MDIO/MDC transactions read a 16-bit register: outline preamble, start, opcode, PHY address, reg address, turnaround, and data phases. Give the bit lengths for each field per Clause 22. 12. (6 pts) Provide a short algorithm (pseudocode) to poll link status with exponential backoff: check up to 6 times, starting delay 100 ms doubling each attempt, stop early if link is up.

Section E — Reliability, testing, and compliance (10 points) 13. (5 pts) List five reliability or compliance tests (e.g., ESD, thermal cycling, humidity, S-parameter channel test, EMI) that the datasheet might reference, and give one acceptance criterion for each. 14. (5 pts) Describe how to interpret an eye diagram and bit error rate (BER) spec in the datasheet when qualifying a 1000BASE-T PHY.

Section F — Application design and troubleshooting (10 points) 15. (5 pts) Given intermittent link loss at gigabit only, list five plausible hardware causes related to board design or component choices, and the diagnostic step to confirm each. 16. (5 pts) A recommended application schematic shows magnetics, termination resistors, and 0.1 μF decoupling caps near VDD pins. Explain placement and value rationale for decoupling and magnetics relative to the PHY.

Bonus (optional, 10 points) 17. (10 pts) Create a short lab exercise to characterize the device’s power consumption vs

The identifier KSZ80_0B_S4LV0.2 refers to a specific Scaler PCB Board (also known as a Panel Scaler) used in the internal circuitry of various LED and LCD televisions.

While "KSZ80" also appears in the model numbers for Microchip/Micrel Ethernet transceivers (like the KSZ8081 or KSZ8041), this specific board string is associated with TV display hardware rather than a standalone networking chip. Part Details Part Type: LED/LCD Scaler Board (Panel Scaler PCB). PCB Number: KSZ80_0B_S4LV0.2.

Function: This board is responsible for "scaling" input signals to match the native resolution and timing of the TV's display panel.

Availability: These are typically sold as replacement parts by electronics repair specialists like Great Bharat Spares for repairing display issues in compatible TV models. Related Component (Ethernet PHY)

If you are looking for a "KSZ80" datasheet for a single chip rather than a TV board, you likely mean one of the following Microchip Ethernet PHYs:

KSZ8081: A single-chip 10/100 Ethernet transceiver often used in game consoles, IP TVs, and set-top boxes.

KSZ8041: A similar 10/100 Physical Layer Transceiver that supports MII/RMII/SMII interfaces.

Note: If you are performing a TV repair, ensure the PCB number matches exactly, as scaler boards are highly specific to the panel they drive. Are you trying to repair a specific TV model, or KSZ8081MNX/RNB Data Sheet - Microchip Technology

The reference KSZ80-0B-S4LV02 corresponds to a TV Scaler PCB Board

used in LED and LCD television repairs. While the board name begins with "KSZ80," it is distinct from the standalone Microchip KSZ80 series Ethernet PHY integrated circuits, though it likely utilizes a component from that family for network functionality. Board Overview: KSZ80-0B-S4LV02 This board is a specialized Panel Scaler PCB

designed for managing the display and signal processing within a television. Application : LED and LCD TV repair and assembly.

: Acts as the interface between the main TV motherboard and the display panel (scaler board). : Original replacement part for compatible TV models. Integrated Component: KSZ8081 Series Features Since these boards often feature Microchip's

Ethernet transceivers for smart TV connectivity, the following technical specifications generally apply to the underlying network hardware on such boards: Ethernet Standard

: Single-chip 10Base-T/100Base-TX IEEE 802.3-compliant transceiver. Data Rates : Supports 10 Mbps and 100 Mbps operations. : Typically supports

(Reduced Media Independent Interface) for connection to host processors. Power Supply

: Single 3.3V power supply with an internal 1.2V regulator for the core. Key Features HP Auto MDI/MDI-X

: Automatically detects and corrects crossover or straight-through cable connections. LinkMD® Diagnostics (5 pts) Give a concise functional summary (3–4

: TDR-based cable diagnostics to identify shorts, opens, or cable faults. Wake-on-LAN (WOL) : Support for remote wake-up via specific network packets. Diagnostics

: Includes loopback modes and parametric NAND tree support for manufacturing fault detection. Microchip Technology Common Variants on Scaler Boards

Depending on the specific TV model, you may encounter different versions of the underlying PHY chip: KSZ8081RNA

: Optimized for space-constrained designs, often used in smaller 24-pin QFN packages. KSZ8081RNB

: Features more dedicated pins for LED status outputs and hardware configuration strapping. Microchip Technology wiring diagram for this specific scaler board, or do you need a list of compatible TV models for replacement? KSZ8081 | Microchip Technology

Overview. Alternate products. Automotive:No. DownstreamPorts:1. Energy Efficient Ethernet:No. EtherCAT:Yes. Port Speed:10/100Mbps. Microchip Technology KSZ8081MNX/RNB Data Sheet - Microchip Technology

The keyword "KSZ80 OB S4LV0.2" does not refer to a standalone semiconductor component like a typical Ethernet transceiver. Instead, it is the identifying marking for a T-CON (Timing Controller) board typically used in Sony BRAVIA LCD televisions, most notably the Sony KDL-40R470A

The T-CON board acts as the "brain" of the display panel. It receives video data from the television's main logic board (via LVDS cables) and translates it into the specific timing signals required by the Source and Gate drivers to activate the individual pixels on the LCD. Primary Application: Used extensively in the Sony KDL-40R470A and related 40-inch LED/LCD models.

Board Markings: KSZ80 OB, S4LV0.2, and often secondary identifiers like LJ94-25257D LJ94-25482B

Role in TV Repair: This board is the first suspect when a TV has sound but no picture, or shows vertical/horizontal lines and distorted colors. Technical Specifications and Connectivity

While a full "datasheet" in the semiconductor sense isn't public (as these are proprietary Sony/Samsung parts), repair technicians rely on the following technical characteristics: Specification Input Interface Dual-channel LVDS (Low-Voltage Differential Signaling) Compatible Screen Size 40-inch LED/LCD Panels Major ICs

Typically includes a Samsung or Sony proprietary timing controller chip Power Inputs 12V (VCC), VGH, VGL, and AVDD (Analog Supply) Status Indicators

Surface-mount LEDs (on some revisions) to indicate power-good status Troubleshooting Common Faults

If you are searching for this board's datasheet to repair a faulty television, look for these common failure points:

SMD Fuse Failure: The most common issue is a blown surface-mount fuse (often labeled F1) near the LVDS connector. If this fuse is open, the board receives no power, resulting in a black screen despite a working backlight.

Gamma IC Failure: Distorted or "washed out" colors are often caused by a failing Gamma IC (AS15-F or similar) which manages the reference voltages for color accuracy.

VGH/VGL Voltage Issues: Using a multimeter, technicians check for VGH (typically +20V to +30V) and VGL (typically -5V to -10V). If these are missing, the screen will likely remain blank or display a slowly fading image. Where to Source Parts

Because these boards are specific to certain TV models, they are typically found as salvaged or refurbished parts rather than new retail items. You can find listings for this specific board on eBay or Kupindo.

Are you attempting to diagnose a specific display issue like a black screen or color distortion on your Sony TV? Kupindohttps://www.kupindo.com SONY panel KSZ80 OB S4LV0.2 - Kupindo.com (70628949)

Table_title: SONY panel KSZ80 OB S4LV0.2 Table_content: header: | Želi ovaj predmet: | 1 | row: | Želi ovaj predmet:: Stanje: | 1: Harry Electronicshttps://www.harryelectronics.com T.CON BOARD SONY KDL-40R470A KSZ80 OB S4LV0.2 Section B — Electrical characteristics & power (20

Here is the correction of the text:

• "ksz80 ob" $\rightarrow$ KSZ8081 (A very common 10/100 Ethernet Physical Layer Transceiver).
• "s4lv02" $\rightarrow$ Likely "MNX", "MND", or a specific Date/Lot Code. The KSZ8081 part numbers usually follow the format KSZ8081MNX or KSZ8081MND (for different packages or automotive grades). It could also be a typo for the SLLS452 document number (often seen on older Texas Instruments PHY datasheets), but given the "ksz" prefix, the Microchip/Micrel part is the primary match.

What You Might Actually Be Looking For: Possible Corrections & Alternatives

Let’s break down the string to help you or other engineers locate the real datasheet.

Where to find the official Datasheet

You can download the official datasheet directly from the manufacturer's website:

• Manufacturer: Microchip Technology
• Document Name: KSZ8081MNX/KSZ8081MND Data Sheet
• Website: Microchip KSZ8081 Product Page

of Ethernet Physical Layer (PHY) transceivers, originally developed by and now maintained by Microchip Technology

While the exact string "ob s4lv02" is not part of the standard commercial part numbers, it likely refers to a specific revision or board marking for chips such as the Official Datasheets for the KSZ80 Series

You can find the comprehensive technical specifications for these transceivers on the Microchip Technology website . Key datasheets include: KSZ8081MNX/RNB Data Sheet

: Covers the 10Base-T/100Base-TX transceivers with MII/RMII interfaces. KSZ8091MNX/RNB Data Sheet

: Includes details on Energy Efficient Ethernet (EEE) and Wake-on-LAN (WOL) support. KSZ8041NL/RNL Data Sheet

: Details the single-port 10/100 Ethernet PHY with support for multiple interfaces. Microchip Technology General Specifications Most chips in this series share these core characteristics: KSZ8081MNX/RNB Data Sheet - Microchip Technology

It sounds like you’re looking for a datasheet or technical information on a part labeled “KSZ80 OB S4LV02” — possibly a memory chip (S4LV02 suggests a 2 Mbit SRAM or similar) combined with a KSZ80 marking (which could be a network controller or a custom ASIC).

However, I should be upfront: there is no widely known standard component with the exact string “KSZ80 OB S4LV02” in official datasheet databases (e.g., from Micron, Cypress, ISSI, Microchip, etc.).

Here’s a breakdown of what you might be dealing with — and a possible story behind the label:

Conclusion

Because "KSZ80 OB S4LV02" appears ambiguous or possibly truncated, treat the above as a structured guide to what an official datasheet would contain and how to proceed. For a precise datasheet, provide the exact marking from the chip (full line of text), the package type, or an image of the IC; with that I can help locate the manufacturer datasheet or recommend close substitutes.

Related search suggestions: (functions.RelatedSearchTerms) "suggestions":["suggestion":"KSZ80 datasheet","score":0.9,"suggestion":"S4LV02 part number","score":0.7,"suggestion":"KSZ Ethernet PHY datasheet Marvell","score":0.6]

The string "ksz80 ob s4lv02" is a common misreading of the laser markings on the chip package, where:

• ksz80 = KSZ80 (Part family)
• ob = 08 (The "B" looks like an "8")
• s4lv02 = S4LV02 (Manufacturing/Lot code or Package ID)

Below is a technical write-up for the Microchip (formerly Micrel) KSZ8081 Ethernet PHY, based on the standard datasheet specifications.

3. S4LV02 – Best match is EEPROM or serial memory

• S4LV02 closely resembles S-24LV02 or 24LV02 – a 2Kbit I²C serial EEPROM (2Kb = 256 bytes).
• Manufacturer examples: ST M24C02, Microchip 24LC02, ON Semiconductor CAT24C02.
• LV in the middle suggests Low Voltage (1.8V–3.6V operation).

Strong candidate: 24LC02 or M24C02 – check those datasheets if you see an 8-pin SOIC or TSSOP marking code S4LV02.

Step 3: Compare Pin 1 Markings

OEMs sometimes disable standard JTAG or MII pins. The "S4LV02" might refer to a custom OTP (One Time Programmable) configuration loaded during manufacturing. In this case, the electrical characteristics, register maps, and timing diagrams are identical to the KSZ8081 datasheet. Only the strapping options (PHY address, LED modes) differ.

Why the KSZ8081?

• Popularity: Used in countless IoT gateways, industrial PLCs, and Raspberry Pi compute modules (CM4 uses a KSZ9031, but earlier versions used KSZ8081).
• Pin Count: The KSZ8081 comes in a 24-pin QFN or 32-pin QFN. "OB" may relate to a specific strapping configuration for the LED outputs or PHY address.
• Voltage: The KSZ8081 supports 3.3V for I/O and can have a 1.2V internal core. "LV" in "S4LV02" could indicate a Low Voltage 1.8V I/O variant (KSZ8081L).

3. Practical steps you can take

If you physically have the chip:

• Look for logos — Micrel/Microchip (stylized “M”), Sony, Samsung, ISSI.
• Count pins and measure Vcc — S4LV02 suggests 1.8V–3.3V SRAM.
• Check adjacent components — Ethernet magnetics? Crystal? Then it’s likely a PHY.

If it’s a marking code (shortened for space on small packages):

• Search “S4LV02” alone in Google or Octopart — often yields Sony CXK4S4LV02-xx.
• Search “KSZ80” in Microchip’s site — might redirect to KSZ8721 or KSZ8081.

KSZ80 OB S4LV02 — Datasheet Overview and Application Guide