Pin |
| Name |
| Direction |
| Function |
|
|
|
|
|
|
|
20 |
| SERVICE |
| Input |
| Flash programming enable signal |
The SERVICE interface is a standard IO, configured internally as an Input. This input is activated in order to enable flash memory programming. The SERVICE interface is normally pulled HIGH and is made active by the host application pulling it LOW.
There are two methods for updating the firmware in the GR64: Sony Ericsson Emma III and Updater. The Emma III system is a web based tool that accesses a Sony Ericsson server from which signed software
NOTE can be downloaded. The Updater is a local application that downloads a signed image provided by SEMC.
5.15LED [to be implemented in a future release]
Pin |
| Name |
| Direction |
| Function |
|
|
|
|
|
|
|
37 |
| LED1 |
| Output |
| LED control signal |
38 |
| LED2 |
| Output |
| LED control signal |
The LED driver interface is able to operate single LEDs or a series of LEDs (such as LED backlighting). The LED interfaces are driven by programmable current sources, designed to control the brightness of the LEDs connected to them (typical of keyboard or LCD illumination).
LED1 can be programmed to sink up to 75mA or 150mA in nonlinear steps over two ranges of output. LED2 can be programmed to sink from up to 50mA or 100mA in nonlinear step over two ranges of outputs. Both LED drivers are capable of sinking their maximum output current at a
The LED drivers require no supporting components, eliminating the need for current- limiting resistors. The LED outputs should be programmed to values consistent with their rated values. If desired, both LED outputs can be ganged together to provide a maximum single LED driver sink capability of 250mA.
LZT 123 1836 | 63 |