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I use USB2.0 for UVC application ,
found some stranger problem hope somebody can help me :
1. Use the usb (device) for bulk transfer , ok
2. Use the usb (device) for UVC , some pc is ok , but most are not ok.
the fail case show pid =00 ( unknow pid) , but the data append after pid is...
Q1. X is tri port in module A
Y is tri port in module B
if I set wire Z=X
then A a1 (.X(X));// now X=1
B b1 (.Y(Z));// Z= unknow
but if B b1 (.Y(X));// then Y =1
why?
Q2.
Is there any document mention about verilog syntax
ex.
*weak0, weak1) buf...
synopsys workshop
Hi bendrift:
Sorry
but may I ask
>one lab is 10M
>one lab is 20M
the lab list above is 30M(after unrar)??
I download find only 9M
Is it possible upload the other 20M...
anyway ,tks for your upload(hope no warning to me)
Re: dft compiler problem
this message means you set the wrong top name.
You need to check your top design name(try to find entity aaa (vhdl) or module aaa(verilog)) .
you can use
==>remove_design -all
to cancel all design first
then set current design again.
===> current_design aaa
1. glitch(cannot found in FPGA)
2. timing(simulation/AE testing not complete , logic/model error ... )
3. leak current , floating signal , power consumption not as expected.
Somebody told me to implement a DVD , need at least 3 Chips
one is Servo(the most difficult), the Analog Front end, and (DSP+MCU)
What does a DSP CHIP means?
What basic function a DSP chip must include ?
What different between a DSP chip and a (MCU(like ARM) + Firmware )?
sorry for ask a lot...
Q1. about LCD Controller "Scroll" ,"Rotate" feature
Q2. about LCD Controller "draw line " ,"picture move" feature (2-D feature)
Q3. about LCD Controller "scaleing" feature
Is there any algorithm for above Display feature!
Q4. If no LCD driver , how to guarantee the controller is OK without...
what does sdf mean
SDF Error: Negative DELAY ignored and replaced by 0.
what situation VCS compiler (include SDF) will ignore Negative Delay
How to FIX this error ?
process problem?
SOrry for ask a stupid problem
In VLSI Process?
what different between duffision and imp ?
after wafer clean ,
need do duffsion or imp??
I2C interface for EEPROM
I dont know vey well about your qustion
the master should already know which slave address it want to send , so after master reset, you need resend start signal then addr(otherwise, which slave he want to control), then all slave will bake to initial state in your State...
synopsys product
Q1: What 's different between dc-shell / dt-shell?
Q2: What 's different between dv/dc/da(design analysis)?
(some dc command seems not allown in dv?)
Q3: What's different between dc/primetime
( dc for synthesis , primetime for timing analysis , is this concept...
if your are a new guy and apply for IC DESIGN(not Dianostic):
Rising Time Falling Time Setup Time
FiFo /Dualport RAM /Asyn CKT
State Machine
MPU concept
if you apply for special product (ex: DSC)
then you need understand Algorithm/DSP.....)
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