What is PCIe enumuration process? Khi liên kết PCIe đã “up” (L0 state), máy chủ (HOST - Root Complex) sẽ bắt đầu quá trình enumeration: - Quét các bus và số thiết bị (device number). - Đọc configuration space của từng thiết bị. - Quyết định/cấp phát địa chỉ cho các BAR, bật memory và bus master, bật MSI, v.v. Trong Endpoint core, mỗi function có một “config space” 4 KB. Có thể hiểu nó như một bảng các trường (fields) mà host sẽ đọc/ghi để cấu hình và điều khiển thiết bị. | VLSI VFAST VN
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