User Manual KWR600001/01
FCC Statement FCC Part 15.19 This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device maynot cause harmful interference and (2) this device must accept any interference received, including interference that may cause undesired operation. NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules.
Table of contents 1. General product description 1.1 Product functions 4 4 2. Functional requirements 2.1 Description of processes 2.2 Description of system 2.3 Real time requirements 5 5 5 8 3. GPIO communication 3.
1. General product description 1.1 Product functions This KWR product is a Bluetooth keyboard + Bluetooth & IR Remote. From the whole system point of view, the Bluetooth TV will be the host, the remote is a dummy slave. In normal working mode, the IR host always report key information to the BT host and wait instruction from the BT host.
2. Functional requirements 2.1 Description of processes Stop mode Any key system idle for Is pressed more than nn seconds Active mode This remote will contain below functions: Inputs: • key scan info • data from Bluetooth interface Outputs: • Data to BT host • IR transmit When the keyboard is slide out, user touch either keyboard or remote will trigger the KWR send key event to the TV. 2.
• BT HID keyboard • Simultaneous Keypress • Reset feature • Special mode 2.2.1 Normal operation mode This is the normal operation when TV is turns on; micro-controller is in active mode, keyboard/remote function as BT HID device. For remote, any valid key press event will report to BTH then BTH toTV, TV will decide the button is for Bluetooth TV function or normal IR device control and send ACK / command back to remote via BTH. For keyboard, BTH will report key stroke info to TV via Bluetooth stack.
2.2.4 Device mode change For the remote function, there are Bluetooth TV mode ( as mentioned in 2.2.1) and IR device mode, under IR device, there are multiple devices, they are SAT/CABLE, TV (IR TV), VCR, DVD / Blue ray / HD, PVR, Audio (Tuner/Receiver) and Amplifier. When user active device change function on the TV, the device name or icon will display on TV, user can use navigate key to move between devices, press key on remote will inform TV to make device selection. 2.2.
2.2.7 Stuck Key time out function Stuck Key means that a key has been pressed for a very long time in normal operating mode. To preserve battery power, the remote will shut down after 25-30 seconds after the last key transition to consume minimal power. After all keys are released, the remote resumes normal operation. The following diagram shows the time limit when the stuck key power down mode is entered.
3. GPIO communication 3.1 Software version and IR DB version checking . Expected under TV menu, there is one item for this function, to check remote software version and IR database version. Data exchange method below: After user make selection on TV, TV will send a ACK packet to IR host via BTH, this will trigger IR host return s/w version number and IR DB version number. The version number will be 3 digit: x.y.z (0 <= x, y, z <=0xF), for example: 3.B.
