Pc Interface Board, Block Diagram - Simrad EY500 Instruction Manual

500 series. portable echo.:
sounders
8 bit out
strobe
select a
select b
RESET
INTER-
RUPT
READ
FIFO/PRT/SIGN.
€",)?'i&Wi&MW##W;;:;MW~i:M%lt
(CD479)
P3405E/B
TEST
BEAMTYPE
cntr
~ TX
~ 2*
tif.'iW;K.W'.iW~:t.;'J'f#MMw.',;:r;:Ji;f.;(*'::";;'
LATCH
latchstb
DECODE
MUX.
Figure
TIMER
~ SCLCK
~Wi' i~iWfl+#Vf,J.(,~' ! fg,KM~iWf#:#;~?;fi3"
data
:i~t
';i'.'
~JI
ptrstb
fifostb
NWfW?iWNtMMkiWlJfWMi
~ PRINTER
,if
RS- FIFO
HALF- FULL AMPLITUDE
& PHASE
MUX.
COUNT
16 bits
M~WWM' giMWWf:j'M%WmiWiW8WJW~
~I:
L---
~ READ
~ SEL AlP
SIGNATURE
BITS
PC interface board , block diagram.