PT2001 Start not unique to microchannel although Start_config_reg set

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PT2001 Start not unique to microchannel although Start_config_reg set

299件の閲覧回数
Fast
Contributor IV

Start_config_reg 104h= 0x0081. Yet both outputs driven. 

They use there local current sense.

first injector current sense 1, Start1, driving HS1 HS2 LS1.

Second injector current sense 2, Start2, driving HS1 HS2 LS3.

Am I expecting too much flexability from PT2001?

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249件の閲覧回数
Fast
Contributor IV

Hi Tomas, My question was, why either START triggered both outputs?

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261件の閲覧回数
TomasVaverka
NXP TechSupport
NXP TechSupport

Looking at code this is behavior:
Channel 1 ucore 0 controls injector using hs1 hs2 ls1 and controlled by start1 ONLY
Channel 1 ucore 1 controls injector using hs1 hs2 ls2 and controlled by start2 ONLY

But the register is not set like this since he is planning to use ls3 instead of ls2

1 (1).png

If you want to control from ls3 you need to change this line from:

inj3_start: dfsct hs1 hs2 ls2;                      * Set the 3 shortcuts: VBAT, VBOOST, LS

to

inj3_start: dfsct hs1 hs2 ls3;                      * Set the 3 shortcuts: VBAT, VBOOST, LS

If not you need to change the register 185h to use ls2 instead of ls3.

BRs, Tomas

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