GL852F中文资料USB 2.0 Configurable MTT Hub Controller数据手册Genesys规格书

描述 Description

GL852F is Genesys Logic’s USB general purpose compound solution which fully complies with Universal Serial Bus Specification Revision 2.0. It features 4 downstream ports and has one more internal downstream port connected to general purpose device. GL852F provides up to 17 General Purpose I/O (GPIO) pins to support general purpose and other applications. The MTT architecture provides every downstream port with individual traffic control for the best performance when connected with several Full/Low-Speed devices and running heavy bandwidth-consuming operations concurrently.


GL852F embeds an 8-bit 8052-like microcontroller with 16 K-bytes built-in SRAM for firmware customization features. The internal SRAM memory space supports multiple programming of applications firmware through USB upstream port, providing higher design flexibility comparing to traditional mask-ROM architecture.


GL852F’s design architecture provides multiple advantages on minimizing the cost of system Built-of-Material (BOM). For example, the hardware featured built-in 5 to 3.3V power regulator, on-chip power on reset, and internal Phase Lock Loop (PLL) that provide multiple clock sources with single 12MHz external crystal. In addition, OEM vendor’s configuration setting and PID/VID can be customized and stored in the internal memory to eliminate the need of using external EEPROM.


*TT (transaction translator) is the main traffic control engine in an USB 2.0 hub to handle the unbalanced traffic speed between the upstream port and the downstream ports.

特性 Features

General Features
• On-chip 8-bit micro-processor
• Integrated ultra low power USB transceiver
• Built-in upstream 1.5KΩ pull-up and downstream 15KΩ pull-down
• On-chip 3.3V output provided by integrated 5-to-3.3V power regulator
• Improved output drivers with slew-rate control for EMI reduction
• 64 pin (7x7mm) LQFP and 48 pin (7x7mm) LQFP lead-free, RoHS compliant package
• On-chip power-on reset (POR) USB hub Features
• Conforms to USB HID Class Specification, Revision 1.1
• I/O ports
– Up to 17 pins for general purpose I/O pin (LQFP64 package)
– Remote wakeup capability
– up to 6 pins can remote wakeup
– Unused I/O pins can be configured as status LED (see Ch3 pin descriptions for detail)