Texas Instruments 990 - Model 911 VDT Controller Block Diagram

GENERATOR
r.--- ------,
Cl.OCK CEL
• -------..,~---..,.--:::OC~T~R ':',_,,':"""I DOT CLK BUFFER [ EXTCLOCK
0 .L. NOOT 4-6 ] COUNTER ... .--...-----.., SE'l.ECTOR~
~ ( N;LZ '----------1
:·~:
I CHAAACTER LINE. A-D,Q I
I GENE:RATOR NL!NE DQ I
~~~2~~----_J
J,NTERVAL~
;=::::;;;~=======---------------i_,,M~_;_ ---=c. --= --."------1--tJ nM••·, :~:, ~
~~-------+------r----n1-r--\_/' l -:::~
NHDENDL _..
:
~o'"
..IJM='ER
SLOCK
KA010
ACDUDRRS:s: r CRB .0 A .a
REGISTER j4---'-"'-'-'-"~~-----,-,
CURSOR Li.L..o-C:::R"'O'~---
AOORE"SS [ NCRC.2,3,i....
LATCHES
19
~
- CR.13-1~.B
~CROL
L...NWllJBL
L..---..2..~
~
,...-----11---------------·PR_E_,,.,,_,ol_J . ~;~~-;,-- ~14-"N~R"-'L,""---+------tr-..1L4-~~----------t-Hf"NC'JR;",''-·"-.'-'·-"-·' .. '·"1d1NsTRUCTIO NCRSC
, D~COOE;R SE LAL
.__1-+-t-~~:""""""I~
I NSEL.AL
L-1~===4=:;::======---Hf+++-t---------trlr- _-_- _- _-_- _- _-_- _- -~- _- -~- +~-+-+----+---------1"-c1· .. ~o,5:::::iQ j .o\.-n-·--+-----,
1 1l~K~•
0
·~"'--!I- '.~"•
5
=·===-Jll~JI, I
CHARACTER:__ l"=H~OE_ND~C ___ _
CHARACTE,R~ Ji
I ~:~~NOL I
.,,.
Figure 1-31. Model 911 VDT Controller Block Diagram
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Digital Systems Division