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Some questions about VSP01M01

Vladimir7
Prodigy 20 points

Hello.
I want to ask some questions about VSP01M01.

1. Value of bit [21] VA instructions. In the tables 50 and 51 written
"fixed at 0". But in Table 52 (example), this bit is set to '0 'or
'1'. Do I understand correctly that Vload = 0, if indicated HA
sequence, and Vload = 1 if the executed VA instruction?

2. It allowed parallel connect the 3-state and 2-state output of
vertical driver? For example V1 and V2?

3. Why VA memory consists of several parts (VA1 - VA8)? After VA1-15
(0x18F), if it is not EOF, will be executed VA2-0 (0x190)?

4. May I use the delay to change several signals in the first pixel of
line? For example I need in pixel 1 set VD = 0 and HD = 0. Will it be
correct to do so:
             1023: HD=0, delay=2
             1024: EOL
             1:        VD=0, delay=0

Thanks

  • 0
    TI__Intellectual 1035 points

    Hello Vladimir7,

    See the replies in green.

    1. Value of bit [21] VA instructions. In the tables 50 and 51 written
    "fixed at 0". But in Table 52 (example), this bit is set to '0 'or
    '1'. Do I understand correctly that Vload = 0, if indicated HA
    sequence, and Vload = 1 if the executed VA instruction?

    Yes, you are correct.
    Vload=0:  Basic Functionality (Indicated HA sequence)
    Vload=1:  Misc Instruction  (Executed VA instruction)


    2. It allowed parallel connect the 3-state and 2-state output of
    vertical driver? For example V1 and V2?

    User can connect above two signals with 2-state usage. Care must be taken so that these two signals have same state and same timing to prevent V driver damage.  


    3. Why VA memory consists of several parts (VA1 - VA8)?
    Each VAx is selected dynamically by register setting.
    The register is programmed as only VA#.
    Start address of each VAx block is assigned. Ex. VA1: address 180h 
    After VA1-15
    (0x18F), if it is not EOF, will be executed VA2-0 (0x190)?
    Yes, program sequence continues till EOF.
    User can program for two VA program area.  


    4. May I use the delay to change several signals in the first pixel of
    line? For example I need in pixel 1 set VD = 0 and HD = 0. Will it be
    correct to do so:
                 1023: HD=0, delay=2
                 1024: EOL
                 1:        VD=0, delay=0
    Pixel number should be defined from 10 as table 45.
    You could program as following:
                 1022: HD=0, delay=1
                 1023: VD=0, delay=0
                 1024: EOL
    HD and VD toggle at 1023 pixels. 1 line period is programmed by EOL.
    If you need to keep relation between HD and the other signals, would you shift the other signals ahead 2 pixels.
     
    regards
    Sankar
  • 0 in reply to Sankar Sadasivam
    Prodigy 20 points

    Thank you very much for your answer