It seems you need detai LED information about the AR8035-AL1A, which is an Ethernet PHY (Physical Layer) chip. I'll break it down according to your request:
Brand and Packaging Information
Brand: The AR8035-AL1A is part of Atheros Communication s, which is a subsidiary of Qualcomm. Atheros is a recognized brand in the networking and communication industry, known for Ethernet controllers, Wi-Fi chips, and related solutions.
Package Type: The AR8035-AL1A is typically available in a QFN (Quad Flat No-lead) package with 28 pins. The 28-pin QFN package has a compact design, allowing for easy integration into various embedded and networking devices.
Pin Function Specification & Circuit Principles
For the AR8035-AL1A, here is a detailed pinout description. The 28-pin QFN package is standard for this model. Below is the pin function breakdown, listing all pin functions in a detailed and systematic manner:
Pin # Pin Name Function Description 1 VDD Power supply (3.3V) 2 VSS Ground 3 MDIO Management Data Input/Output (for IEEE 802.3 MAC management interface ) 4 MDC Management Data Clock (clock signal for MDIO) 5 RXD0 Receive Data (bit 0) 6 RXD1 Receive Data (bit 1) 7 RXD2 Receive Data (bit 2) 8 RXD3 Receive Data (bit 3) 9 RXDV Receive Data Valid 10 RXERR Receive Error 11 TXD0 Transmit Data (bit 0) 12 TXD1 Transmit Data (bit 1) 13 TXD2 Transmit Data (bit 2) 14 TXD3 Transmit Data (bit 3) 15 TXEN Transmit Enable 16 TXERR Transmit Error 17 CRS_DV Carrier Sense/Receive Data Valid 18 COL Collision Detection 19 INT Interrupt output 20 LED1 Link Status/Activity LED output 21 LED2 Speed (10/100/1000 Mbps) LED output 22 VSS Ground 23 VDD Power supply (3.3V) 24 RESET Reset Pin (active low) 25 RXCLK Receive Clock (for the PHY's internal clock) 26 TXCLK Transmit Clock (for the PHY's internal clock) 27 REFCLK Reference Clock Input (for PHY internal synchronization) 28 NC No connection (reserved pin)20 Common FAQs and Answers
Here is a list of 20 frequently asked questions related to the AR8035-AL1A and its functionality, each answered in detail:
Q: What is the main function of the AR8035-AL1A? A: The AR8035-AL1A is an Ethernet PHY (Physical Layer) transceiver designed for providing Ethernet connectivity with a MAC (Media Access Controller) in embedded systems, offering data rates from 10 Mbps to 1 Gbps.
Q: What power supply voltage does the AR8035-AL1A require? A: The AR8035-AL1A requires a 3.3V power supply for its operation, as provided by pins VDD.
Q: How many data lines are used for transmitting data on the AR8035-AL1A? A: The AR8035-AL1A uses 4 transmit data lines (TXD0, TXD1, TXD2, TXD3) for sending data in parallel format.
Q: What is the purpose of the RXD pins? A: The RXD pins (RXD0, RXD1, RXD2, RXD3) are used for receiving data from the network in parallel format.
Q: What is the function of the MDIO and MDC pins? A: MDIO (Management Data Input/Output) and MDC (Management Data Clock) are used for the IEEE 802.3 Management Interface, enabling communication between the PHY and the MAC for configuration and status monitoring.
Q: What is the role of the RXDV pin? A: The RXDV (Receive Data Valid) pin indicates when valid data is present on the RXD pins, enabling the MAC to process the received data.
Q: What is the TXEN pin used for? A: The TXEN (Transmit Enable) pin is used to enable or disable the transmission of data on the TXD pins.
Q: How does the AR8035-AL1A detect collisions? A: The COL (Collision) pin is used to signal when a collision is detected on the Ethernet network, indicating that the transmission needs to be retried.
Q: What type of LED indicators can be connected to the AR8035-AL1A? A: The AR8035-AL1A supports two LEDs: LED1 for Link Status/Activity, and LED2 for indicating speed (10/100/1000 Mbps).
Q: How does the AR8035-AL1A handle reset operations? A: The RESET pin is used to reset the PHY. When asserted low, it will reset the chip and restore it to a default state.
Q: What is the significance of the REFCLK pin? A: The REFCLK pin provides the reference clock input needed for the internal synchronization of the PHY's operation.
Q: What is the function of the RXCLK pin? A: The RXCLK pin provides the receive clock for the PHY to synchronize with the incoming data on the RXD lines.
Q: What is the TXCLK pin used for? A: The TXCLK pin provides the transmit clock for the PHY to synchronize with the outgoing data on the TXD lines.
Q: How can the AR8035-AL1A be used in gigabit Ethernet networks? A: The AR8035-AL1A supports Gigabit Ethernet (1000 Mbps) and uses the RXD and TXD pins in 4-bit parallel mode, providing high-speed data transmission for networking applications.
Q: What happens if there is an error on the transmission or reception? A: In case of transmission or reception errors, the TXERR and RXERR pins indicate the errors, allowing the system to take appropriate actions.
Q: Can the AR8035-AL1A be used in 10/100 Mbps applications? A: Yes, the AR8035-AL1A is backward-compatible with both 10 Mbps and 100 Mbps Ethernet speeds, adjusting automatically based on the link's capabilities.
Q: What is the purpose of the VSS pins? A: The VSS pins are ground pins used to complete the electrical circuit, ensuring stable operation of the AR8035-AL1A.
Q: How is the AR8035-AL1A integrated into a network system? A: The AR8035-AL1A is typically connected to an embedded processor or microcontroller with an Ethernet MAC, providing the physical layer interface for network communication.
Q: Can the AR8035-AL1A be used in low-power applications? A: Yes, the AR8035-AL1A is designed for low-power operation, making it suitable for embedded and portable devices requiring efficient energy consumption.
Q: How does the AR8035-AL1A interact with the Ethernet MAC layer? A: The AR8035-AL1A communicates with the Ethernet MAC layer via the MDIO/MDC interface, transmitting and receiving data through the TXD/RXD pins and controlling link status through the control pins.
This overview gives you detailed insights into the AR8035-AL1A, covering pin functions, FAQs, and a comprehensive understanding of its operation. If you need additional clarification or more details, feel free to ask!
