ECE1117中文资料I/O Controller数据手册Microchip规格书

描述 Description

Thetypical usage model is to locate the ECE1119/ECE1117 in the keyboardassembly. Bymounting the ECE1119/ECE1117 onto the keyboard assembly, the keyboard and touchpad/point stickPS/2 signals and the backlight PWMs are routed from the keyboard tothe motherboard over a single BC-Link connection. In all other notebookdesigns without BC companion device, the signals from the keyboard matrix,PS/2 and LED are routed to the motherboard via a wide ribbon extension forthe keyboard switch circuit. ECE1119communicates to the upstream host via BC-Link or SMBus and provides up tothree downstream BC-LinkTM or SMBus ports to permitcommunication between the upstream host and downstream companion devices.

Family partsECE1117-HZHECE1117-HZH-1ECE1117-HZH-1-TRECE1117-HZH-TRECE1117-Y3-1-TR

特性 Features

Multi-Function BC-Link/SMBus Companion Device with Three Downstream Ports
•  BC-Link™ Slave Interface to Host EC- 3-pin point-to-point communication link to Embedded Controller
•  Optional SMBus Slave Interface to Host EC- BC-Link/SMBus protocol autodetect- Strap pin selects between two slave addresses at POR- Dynamically programmed slave address after POR
•  BC-Link Companion Switch, ECE1119 only- 3 External Downstream Ports for additional BC-Link companion connectivity
• SMBus Switch, ECE1119 only- External Ports for connectivity to additional 3 Bus segments
• Keyboard Scan Matrix- Up to 23x8 Keyboard Scan Matrix in ECE1119- Up to 19x8 Keyboard Scan Matrix in ECE1117
• LED Output Pins- 9 LED Output Pins in ECE1119– 6 with 20mA current sink– 3 with 4mA current sink- 7 LED Output Pins in ECE1117– 4 with 20mA current sink– 3 with 4mA current sink- Multiple Clock Rates- Breathe capability- Open Drain- 5V tolerant- All can be synchronized
• General Purpose I/O Pins- 20 General Purpose I/O Pins ECE1119- 16 General Purpose I/O Pins ECE1117- All are BC Bus addressable I/O Pins- All are Maskable Hardware Wake-Event Capable- All are Programmable Open-Drain/Push-Pull