AS3668 datasheet(36/60 Pages) AMSCO

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AS3668

Data Sheet - D e t a i l e d D e s c r i p t i o n

Please mind that the settings for tr_CURR, tf_CURR, ton_CURR, toff_CURR and tp_CURR and the pulse count number in register multiple_pulse

are valid for all four current sinks at the same time. It is not possible to define individual time values for each current source differently to each

other. The only parameter which can differ from on current source to another is the current which can be configured in registers curr1_current,

curr2_current, curr3_current and curr4_current for each current source independently.

Figure 44. Multiple Pulse Mode - Example

8.10.3 Frame Mask Mode

An additional feature for creating unique LED lighting effects is the Frame Mask Mode. In order to use this mode there is no additional timing

parameter necessary. All the timing parameters described in Section 8.10.1 and Section 8.10.2 are also valid for this third mode and can be

combined together. There are no restrictions when using this mode together with Single- or Multiple Pulse Mode. For a better understanding how

this special mode works a timing diagram example can be found in Figure 45 below.

Figure 45. Multiple Pulse Mode - Example

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