AT&T 3B2/300 Technical Reference Manual page 273

FUNCTIONAL D E S C R I P T I O N - - - - - - - - - - - - - - - - - - - - - ~ - - - - -
I
I
I
~
I
PR[l]W[O]
(
VALID ADDRESS (Note I)
r-
SYSTEM
PPA23-00[1]
I
I
I
I
I
I
~
I
/:
SYSTEM
PCS[O]
I
I
I
I
<
:
>-
PSIZE16[0]
VALID (Note 2)
PERIPHERAL
I
UNIT
I
I
I
I
I
I
,;I
I
\
V
\
SYSTEM
PPAS[O]
I
I
I
I
~
I
PDIS-00[1]
(
VALID DATA (Note 2)
Ji-
SYSTEM
I
I
I
I
I
I
I
I
I
PDS!-0[0]
=--;.
\ V \
:
SYSTEM
I
I
J
I
PDTACK[O]
\
I
I
PERIPHERAL
PFLT[O]
I
UNIT
Note 1: PSIZE16[0] must be valid at system board for at least 20 nanoseconds before PDSl-0[0].
Note 2: Data and address are valid for at least 10 nanoseconds after PDSl-0[0] and PPAS[O] raising edge, respectively.
Figure 3-7: System Board Peripheral Controller Write Operation
3-20 TECHNICAL REFERENCE MANUAL