产品概览
EPCS4SI8N from Intel/Altera is a 4-Mbit serial configuration device for Active Serial programming of Intel FPGAs. Stores bitstream and auto-loads on power-up. 4-pin AS interface connects directly to FPGA. In-system programming via JTAG through FPGA.
工作原理
On power-up, FPGA drives nCS low and generates DCLK. EPCS4 outputs bitstream on DATA pin synchronized to DCLK. After configuration, FPGA asserts CONF_DONE. Reprogramming via JTAG through ASDI pin.
Pin Description
| 针脚 | 名称 | 功能 |
|---|---|---|
| 1 | nCS | Chip select |
| 2 | DATA | Serial data out |
| 5 | ASDI | Serial data in |
| 6 | DCLK | Serial clock |
应用
- Cyclone FPGA config storage
- Stratix boot ROM
Alternative Models
| 制造商 | 部件编号 | 说明 |
|---|---|---|
| 英特尔 | EPCS16SI8N | 16 Mbit version |
| 英特尔 | EPCQ16ASI8N | Advanced serial |