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cadence SPB17. 4 - Active Class and Subclass
2022-04-23 15:34:00 【LostSpeed】
Preface
allegro When placing elements on a board , Need to be in option Specify the current class and subclasses in the page .
Want to understand the meaning of these classes and subclasses .
The official local document is file:///D:/cadence/spb_17.4/doc/algrostart/appd.html
note
The number of classes is 26
There are many subclasses under each category .
The subclass names of different classes may be the same , But the meaning is different .
class - ANALYSIS
The subclasses below this class are obsolete (This subclass is no longer in use)
Subclass Analysis - _Epb_Scratch_Acon_Space_Poly The official didn't say
class - Anti Etch
No official documentation was found
Check information , It can be seen that this layer is matched keep in Area , Carry out network plane segmentation . You can assign a plane to a specified network (e.g. GND1, GND2), Make different signals have different large-area potential reference planes .
class - BOARD GEOMETRY
Plate and frame layer
Subclass 23 individual
BOARD GEOMETRY - Assembly_Detail : Assembly layer details , Instructions for assembly requirements can be placed
BOARD GEOMETRY - Assembly_Notes : Remarks of assembly layer , Put the text description of the assembly requirements , and Assembly_Detail Almost work .
BOARD GEOMETRY - Both_Rooms : Place one... On all layers of the assembly layer room, Used to specify which devices can be placed in these room in , coordination “Package to Room” Use
BOARD GEOMETRY - Bottom_Room : and Both_Rooms similar , The difference is in the assembly layer bottom Layering room.
BOARD GEOMETRY - Cutout : The official didn't say , Look up the data , It is used for opening windows in the plate and frame layer .
BOARD GEOMETRY - Design_Outline, The official didn't say , It should be that the official documents didn't keep up with S026 Patch . This floor is used for placing the outer frame of the board . Press F2 when , Zoom directly to Design_Outline Draw the size of the shape of the closed board and frame view.
BOARD GEOMETRY - Dimension : Definition of dimension of placing frame layer .
BOARD GEOMETRY - Ncroute_Path: The official didn't say . Is it not officially stated , It means it doesn't matter ?
BOARD GEOMETRY - Off_Grid_Area: Definition grid Area , Whether it is a different area of the board , Grid point ( Show , Capture ) It can be different ?
BOARD GEOMETRY - Outline: Officials say this is the frame layer , But the information says that this floor is not recommended , You should use Design_Outline.
BOARD GEOMETRY - Place_Grid_Bottom: Place the bottom grid
BOARD GEOMETRY - Place_Grid_Top: Place top grid
BOARD GEOMETRY - Plating_Bar: Metallized strips ,e.g. Golden finger
BOARD GEOMETRY - Ravel : No official statement
BOARD GEOMETRY - Silkscreen_Bottom : Bottom screen
BOARD GEOMETRY - Silkscreen_Top : Top screen
BOARD GEOMETRY - Soldermask_Bottom : Bottom layer resistance welding
BOARD GEOMETRY - Soldermask_Top : Top layer resistance welding
BOARD GEOMETRY - Switch_Area_Bottom : Has been abandoned
BOARD GEOMETRY - Switch_Area_Top : Has been abandoned
BOARD GEOMETRY - Tooling_Corners : It seems to be related to flexible circuit board .
BOARD GEOMETRY - Top_Room : top floor room
BOARD GEOMETRY - Wb_Guide_Line : Definition APD+ Pad boundary in
class - Boundary
No official instructions were found
class - Cavity
No official instructions were found
class - Component Value
This class is only used for pure manual cloth board ( Scenarios that do not use schematic diagrams ), No one does that ?
Subclass 6 individual
Component Value - Assembly_Bottom : Assemble the bottom layer , Auxiliary manual in PCB Editor Enter component values in , If it is a net list introduced from the schematic diagram , It's no use here
Component Value - Assembly_Top : Assemble the top layer , Other same as above .
Component Value - Display_Bottom : Show the underlying , Other same as above .
Component Value - Display_Top : Show top level , Other same as above .
Component Value - Silkscreen_Bottom : Silk screen bottom layer , Other same as above .
Component Value - Silkscreen_Top : Silk screen top layer , Other same as above .
class - Constraint Region
No official instructions were found
It means restricted area .
Last 3 Item means : Outer layer , Inner signal layer , Internal potential layer .
class - Device Type
This class It's in different sub-class Displays the device type in the .
class - Drawing Format
This class is used to draw drawing information . e.g. Icons for description , Title bar, etc. .
Subclass - Drawing Format:Outline Place design forms or documents
Subclass - Drawing Format:Revision_Block Differences between placement versions
Subclass - Drawing Format:Revision_Data Place version history information
Subclass - Drawing Format:Title_Block The title bar , Benchmarking schematic title block
Subclass - Drawing Format:Title_Data PCB Data in the title bar , e.g. Project name , Board name , author , date , Version number .
class - Drc Error Class
This layer is used to select DRC FALSE .
Subclasses know their meaning from their names
class - Etch
This class is for discharge wiring .
class - Manufacturing
Automatic operation ( from TCL Script operation ) The layer , Manual editing of this layer is not recommended .
class - Package_Geometry
PCB Encapsulation layer
class - Package_Keepin
PCB Encapsulate the area where you can place
class - Package_Keepout
PCB Encapsulate areas that cannot be placed
class - Pin
No official instructions were found
class - Plan
No official description found
class - Ref Des
This layer is the display of component tag number .
class - Rigid Flex
No official description found
class - Route Keepin
No official description found
It literally means allow wiring area
class - Route Keepout
No official description found
It literally means no wiring area
class - Surface Finishes
No official description found
class - Tolerance
Tolerance layer
class - User Part Number
Part number layer (e.g. Jialichuang commodity No , Internal private component number )
class - Via Class
No official statement
Via class
class - Via Keepout
No official statement .
It is forbidden to place vias . Do you mean , Which area can't place vias ?
END
take option On page Active Class and Subclass, Combined with official documents , I have a look at it .
I have a general idea of these various Class, SubClass Use of .
Large factory documents and software are not exactly corresponding , A lot of things are not written , Turning back and forth official documents may not necessarily find the corresponding operation or instructions .
But compared with small factory software , OK, too much .
版权声明
本文为[LostSpeed]所创,转载请带上原文链接,感谢
https://yzsam.com/2022/04/202204231526432265.html
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