The typical usage model is to locate the ECE1119/ECE1117 in the keyboard assembly. By mounting the ECE1119/ECE1117 onto the keyboard assembly, the keyboard and touchpad/point stick PS/2 signals and the backlight PWMs are routed from the keyboard to the motherboard over a single BC-Link connection. In all other notebook designs without BC companion device, the signals from the keyboard matrix, PS/2 and LED are routed to the motherboard via a wide ribbon extension for the keyboard switch circuit. ECE1119 communicates to the upstream host via BC-Link or SMBus and provides up to three downstream BC-LinkTM or SMBus ports to permit communication between the upstream host and downstream companion devices.
Family parts ECE1117-HZH ECE1117-HZH-1 ECE1117-HZH-1-TR ECE1117-HZH-TR ECE1117-Y3-1-TR
Additional 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
The typical usage model is to locate the ECE1119/ECE1117 in the keyboard assembly.
By mounting the ECE1119/ECE1117 onto the keyboard assembly, the keyboard and touchpad/point stick PS/2 signals and the backlight PWMs are routed from the keyboard to the motherboard over a single BC-Link connection. In all other notebook designs without BC companion device, the signals from the keyboard matrix, PS/2 and LED are routed to the motherboard via a wide ribbon extension for the keyboard switch circuit.
ECE1119 communicates to the upstream host via BC-Link or SMBus and provides up to three downstream BC-LinkTM or SMBus ports to permit communication between the upstream host and downstream companion devices.
Family parts
ECE1117-HZH
ECE1117-HZH-1
ECE1117-HZH-1-TR
ECE1117-HZH-TR
ECE1117-Y3-1-TR
Additional 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
