PM860K01,3BSE018100R1工控模块备件
8.8批量输入端点批量输入端点模块处理批量输入端点数据包传输协议，如DATA数据包和返回状态数据包。它还将芯片入站FIFO内的数据通过data包中的大容量传输到USB主机。8.9端点中断端点中断模块处理端点数据包传输协议（如DATA数据包和返回状态数据包）中的中断。它通过data包中的中断将芯片内部产生的中断数据传输到USB主机。8.10命令序列器此模块处理USB标准请求和供应商请求。它向相关外围模块发送控制信号，并从外围模块收集信息。当它接收到USB标准请求命令时，它可以检查ROM数据或从OTP锁存的数据，并将其返回到USB主机。当收到供应商的请求时，它会发送到外围设备以设置或获取某些内容。8.11出站FIFO此缓冲区从批量输出端点接收数据，并向外围模块提供数据。它处理读和写指针，并计算满和空条件。还有接近空阈值检查，以通知外围模块FIFO将变空。8.12入站FIFO此缓冲区接收来自外围模块的数据，并向Bulk-In Endpoint提供数据。它处理读和写指针，并计算满和空条件。还有接近满阈值检查，以通知外围模块FIFO即将满。8.13事件生成器此模块向中断输入端点提供中断数据。该模块检测UART外设的中断事件切换。产品数据表PL2303GL版本：2018年12月6日-15/23-Rev.0.8 8.14内部OTPROM PL2303GL的OTPROM（一次性编程只读存储器）用于存储芯片功能设置和USB描述符相关数据。存储器的一次性编程用户区域可用于自定义设置。
8.8 Bulk In Endpoint The Bulk In Endpoint module handles bulk-in endpoint packet transfer protocols such as DATA packet and return status packet. It also transfers data inside the chip inbound FIFO to USB host through bulk-in DATA packet. 8.9 Interrupt In Endpoint The Interrupt In Endpoint module handles interrupt-in endpoint packet transfer protocols such as DATA packet and return status packet. It transfers interrupt data generated inside the chip to USB host through interrupt-in DATA packet. 8.10 Command Sequencer This module handles the USB standard requests and vendor requests. It dispatches control signals to relative peripheral modules and gather information from peripheral modules. When it received USB standard request commands, it may check ROM data or data latched from OTP and return them to USB host. When vendor requests are received, it dispatches to peripherals to set or get something. 8.11 Outbound FIFO This buffer receives data from Bulk Out Endpoint and provides data to peripheral modules. It handles read and write pointers and calculate full and empty conditions. There are also near empty threshold check to notify peripheral module that FIFO is going to empty. 8.12 Inbound FIFO This buffer receives data from peripheral modules and provides data to Bulk In Endpoint. It handles read and write pointers and calculate full and empty conditions. There are also near full threshold check to notify peripheral module that FIFO is going to full. 8.13 Event Generator This module provides interrupt data to Interrupt In Endpoint. This module senses interrupt event toggle from UART peripheral. Product Data Sheet PL2303GL Release: Dec. 6, 18 - 15 / 23 - Rev.0.8 8.14 Internal OTPROM The OTPROM (One-Time Programming Read-Only Memory) for the PL2303GL is used to store chip function settings and USB descriptor related data. A one-time programming user area of the memory is available to allow customization of settings.
