Teac MT-20D-IO - Page 38

HDRQ(H)~ HDACK(L) and EOP(L) are interface signals with DMAC. During write
operation~ these signals have the timing relation with the host interface
signals ACK(H), XFR(H)~ and RDY(H) as shown in Fig. 316; during read opera-
tion, they have the timing relation with ACK(H), XFR(N) and RDY(H) as shown
in Fig. 317.
ROY (HI
XFR (HI
ACK(HI
Jl
f
HORQ(HI
HOACKCL)
L
----------~j~r-------.~
EOP (L)
----------------------------------~!~{--------,LJ
o
Fig. 316 Timing in write operation
ROY(HI
~
I
~
t~
I
XFR(HI
(
ACK(HI
r~
L
CD
r-----J
I
HORQ(HI
HOACK(U
~~
(E
EOP(L)
U
0
Fig. 317
Timing in read operation
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