Texas Instruments 990 User Manual

MDOSQ _
("' MD0
6
Q ]LSO~ GRAPHICL
I-"'~----_;,_--~~ ~J
,,.~-----L-"'IN.:..;E:;.A.:..;Q:,__--IA YO p-
VL....-----....;;;L.:..;IN~E~D~Q;:__--iB LSl39 YI p-
Y2
FROM CRU __ N_D_2T_R_u_s_o __ -ca G Y3 k
INTERFACE ..,-----
LOGIC
GRAPHICL
GRAPHICS Q
OPTION i_P9
JUMPER
D2TRU6Q
NLINEDQ
~ALPHALJ
NGRENAL
/ LINEBQ AO TMS4700/
lj;" • ......---=,:.;.::.=--IAI 2316E
LINEAQ
V'l~-~L~l~N~EC~Q!!!!---lA2 01 t--------~
.,.....;.M~D~OO:;;:.::Q;.._--IA3 02 1----------.
MDOIQ 031---------.
Lvr--;_;_;:'----1 A4
·~-M-D~0~2~Q'----IAS 041-----~
·~-M_D;.;:0-3..;;;Q---IA6 os1-----
1.....--M_D""0;..;4..;;;Qc__--1A
7
06 1---
MDOSQ 07 l---
1,...-----4A8
1
_...._M_D_06..,;..;;Q;_--1Ag 08 1--
V NCGG .
lLS~JO----t--f--..:.:=~---d-"OEI
l 0---<: OEZ
~,_G~~ _ - .. A_•_o ___ __.
ONLY)
'V-'-M.;.:D:.::OO=Qc.---1 A
lv.rM.;.:D:.::0:.::1..;:Q_--I B
l..-..;.;M;,;;D;.:0;.:2.::0_--1 C
V MD03Q
•v~-'-----ID
•v~M:.::D;.:0;;;:.4=.0_--1 E
NCGLB _,,., G
._,
LS188
YI l--+--+--+-+--l~l-6
Y21--+--+--+-+--l""""41
Y3 l--+--+--+-+-41
Y4 t--+--+--+-
YS t--+--+--41
Y6 i---+-.
Y7~
YB 1--
LINE 8
GENERATOR
0 - SER.IN
LS188
0 - A
Ylt--+--+--+-+--l--l~i.-.;;:C~G~O,;;.T __ -IB
Y2t--+--+--+-+--l'--4..._-.:C~G~1..:.T __ -IC
Y3t--+--+--+-+'--4..._ __ _:C:;:G;::2..:.T __ -ID
166
CLK
NCLK
o-
1-DI
1 -DZ
0 -fl3
0 --P4
hs
FROM REFRESH MOO ,C>-7 ,Q .J.
MEMORY._....,; __ ._ ____ """--~,:""'"----------------------------------+-+--+---------------------------------------------_J
t--- __ M_o_oo_o--1 A
"' MDOIQ B
......._ MD02Q C
y4 t--+--+--+-41----.:C;::G:.::3.:_T __ -I E
r-- : ~vE: LS151 W
...... MD07Q
FROM CRU CRADQ
INTERFACE LOGIC
(R)l 36294 A
__ M_o_o3_o__, D YS t--+--+--41------=C:.::G:::.4.:_T __ -I F
OH VDQ
0
0
t- ___ v_1o_E_o_o ______ ~
I __ M_D_04_Q---I E Y6 1--+--+-------=C~G::,::S~T---1 G
'--t"""-t-------------------------__.:N~C~G~L=9:..._--~~G Y
7
1-_ ... _______ _:C:;:G;::6,;;.T __ -IH
LS273 ,.----.:..:R..:.V.;:O;_ __ -IB
,_ __ P_P_Q-'------lic~
YB 1-- NLOADQ S/L
._C_L_K;_~CK ,.--B~L~Q---dD
FROM CHARACTER LINE 9
SYNCHRONIZATION --------l'--4a---;N.:..L::;l::,.N:.::E:.::D.:Q:__ ____ --. GENERATOR
LOGIC GRAPHICL lLS~''>°_N_l;;_N;;_H;.;:L;__ __ --l_I"""'~ NLDL NLOL r--- NLOADQ
... _-=.;.;.:.:..~~:_--~.__.~J ____JLso~,D---'---_..;.;.;;;;;:.=..,. ___ -10 01---'--"------
FROM TIME
BASE GENERATOR
_
____,J -
{
DOTR3
CLK
LS273
CLK
CK
,__
0 - CK,INH
CLK
,....;;:,_ __ .....JCK
1
-C._c_L ___ __.
VIDEO OUTPUT
SHIFT REGISTER
~
FROM CRU NRL ___l__ NRL
INTERFACELOGIC_;_;;_;,;;; ____ ...,.-f---~-... ..... --------------il---------------4-~:.=_--_J
FROM CRU
INTERFACE LOGIC -------+--cc:;.:,;;.HA,:_::ZB~Q
0
;;_ ____ 1.r--:--'"""::\.... NCUINHL ~ ~
FROM CHARACTER ' ILSO~ ~ CMEL ,.....--- r---
SYNCHRONIZATION ...__J .----I ::Jr-------""-+----1 D Q 1-------------_:::C.::O __ _.o Q 1-------f--°"C,_P,.0--1 D Q RVQ
LOGIC FROM MEMORY CURL LSn3 LS273 LS273
ADDRESSING
LOGIC
,.---- CK
I
- ---
NDOT4
CK
NRLI
~CK
~
NRL I
lLso,V-J-------------+------------~P=E~NA~L---f""----.... r--- ,.....---
- GRAPHICL ]Ls~'J----------t-+--------------P:_:R.:_O:_T.:_L=---1--'---1 p Q t------1-...;P...;Q::;_--I D Q 1-P-PQ~----'
-
,....._
MXL
---~'----+-+---ID Q l---
LS 273
NMEMQ _J
LS273
LS273
;-+--CK
._.,:_C::;LK"'-~CK
~
NRL l
c
NRL
~
CRAEQ
NBQ
BEL r--- r---
l LS .:'.l"a-----1--.,__ _ _.D Q 1------+-B_LA_N..;.K;...Q-4D Q t-B_L_o ___ _.
-i
LS273
.,---------l---------...;N~D~O~T~4:_-6~---1CK
FROM CHARACTER { VSBQ _ ,.......__ CL
SYNCHRONIZATION HSBQ )Ls~~,..,:>--------------N_B_L __ __,~+-__.D QI--'- ~
LOGIC -------1 NRL l
~
LS273
NDOT4
FROM TIME
BASE GENERATOR --------1--411---.lCK
:r
NRL
LS273
~CK
T
VIDEO OUTPUT
CONTROL LATCHES
Figure 1-44. Video Output Logic
1-73/1-74
NVIDL
TO VIDEO
LINE DRIVERS
Digital Systems Division

Texas Instruments 990 Specifications

General

Brand	Texas Instruments
Model	990
Category	Desktop
Language	English