The part number "EPCS128SI16N" corresponds to a component produced by Intel. It is part of the EPCS (EPCSxx) family of configuration devices used in FPGA applications. This specific model, "EPCS128SI16N," is a 128 Mb (16MB) Serial Configuration device with a 16-pin package. The device is typically used for storing the configuration data that an FPGA loads during boot-up.
Package Type and Pin Count:
Package Type: The "SI16" in the part number refers to a 16-pin SOIC (Small Outline Integrated Circuit) package. Pin Count: There are 16 pins on the package.Detailed Pin Function Specifications:
Below is the detailed pin function table for the EPCS128SI16N device.
Pin Number Pin Name Pin Function Description 1 VCC Power Supply This pin provides the main supply voltage (typically 3.3V) to the device. 2 CS Chip Select This pin selects the device to communicate with the controller. A logic low level on this pin enables the device. 3 MISO Master In Slave Out This pin is used for serial data output from the EPCS device to the FPGA or controller. 4 MOSI Master Out Slave In This pin is used for serial data input from the FPGA or controller to the EPCS device. 5 SCK Serial Clock This pin carries the clock signal for the serial communication between the FPGA/controller and the EPCS device. 6 HOLD Hold This pin is used to pause communication with the device without losing the data on the device. A logic low signal holds the device. 7 WP Write Protect This pin controls write protection for the device. When low, writes to the device are enabled; when high, writes are disabled. 8 NC No Connection This pin is not connected internally and has no function. 9 NC No Connection This pin is not connected internally and has no function. 10 NC No Connection This pin is not connected internally and has no function. 11 NC No Connection This pin is not connected internally and has no function. 12 NC No Connection This pin is not connected internally and has no function. 13 NC No Connection This pin is not connected internally and has no function. 14 NC No Connection This pin is not connected internally and has no function. 15 GND Ground This pin is connected to the ground of the system. 16 VCC Power Supply This pin is another power supply pin that connects to the main supply voltage.Circuit Principle:
The EPCS128SI16N device operates as a serial configuration device that stores and transfers configuration data for FPGAs. The main operation involves:
Data Input: Configuration data is sent serially via the MOSI pin. Clocking: The serial clock (SCK) pin synchronizes data transfer. Data Output: Configuration data is sent out via the MISO pin during FPGA configuration. Chip Select: The chip is selected using the CS pin. Control Pins: The HOLD and WP pins allow for pausing and protecting write operations.20 FAQ (Frequently Asked Questions):
Q: What is the function of the CS pin on the EPCS128SI16N? A: The CS pin is the Chip Select, and it enables communication with the device when pulled low. Q: How many pins does the EPCS128SI16N have? A: The EPCS128SI16N has 16 pins in its package. Q: What voltage does the VCC pin require? A: The VCC pin requires a 3.3V supply for proper operation. Q: What happens when the WP pin is set to high? A: When the WP pin is high, write operations to the device are disabled. Q: What does the MISO pin do? A: The MISO pin is the Master In Slave Out pin, used for outputting data from the device to the FPGA/controller. Q: What is the function of the SCK pin in the EPCS128SI16N? A: The SCK pin provides the serial clock signal, which synchronizes the data transfer. Q: Can I connect the MISO and MOSI pins together? A: No, the MISO and MOSI pins serve different functions, and they should not be connected together. Q: How is the device selected for communication? A: The device is selected by pulling the CS pin low. Q: What does the HOLD pin do? A: The HOLD pin temporarily halts communication with the device without losing its data when pulled low.Q: What is the role of the GND pin on the EPCS128SI16N?
A: The GND pin connects the device to the ground of the system.Q: What happens if the CS pin is not correctly managed?
A: If the CS pin is not correctly managed, the device may not be properly selected, and communication may fail.Q: Is there a write-protect function in the EPCS128SI16N?
A: Yes, the WP pin controls the write protection for the device.Q: How do I interface the EPCS128SI16N with an FPGA?
A: Connect the MISO, MOSI, SCK, CS, and other relevant pins to the FPGA for configuration data transfer.Q: Can I use the EPCS128SI16N for non-configuration purposes?
A: The EPCS128SI16N is specifically designed for storing configuration data for FPGAs.Q: What is the maximum clock frequency for the SCK pin?
A: The maximum clock frequency depends on the specific configuration mode and the external environment but typically ranges in the MHz range.Q: How is data stored on the EPCS128SI16N?
A: Data is stored in non-volatile memory (flash) and can be reprogrammed as needed.Q: Is the EPCS128SI16N available in other package types?
A: Yes, the EPCS family comes in different package types, such as SOIC, TQFP, etc.Q: What happens if I don't connect the WP pin?
A: If the WP pin is left floating, the write protection will be unpredictable. It is recommended to tie it to VCC or ground.Q: Can the EPCS128SI16N be used in high-speed applications?
A: Yes, but the clock frequency and timing should be considered in the design to ensure reliable operation.Q: How can I test the functionality of the EPCS128SI16N?
A: The functionality can be tested by writing configuration data and verifying that it correctly configures the FPGA or system.