Switching Direction Of Transfer Over Data Bus - Fujitsu MAN3184 SERIES Specifications

f) The P_CRCA signal direction may switch direction while the DATA BUS and/or DB(P1) does
not (e.g., changing from COMMAND phase to DT DATA OUT phase).
When switching the P_CRCA signal direction from out (INIT driving) to in (TARG
driving)
1) The TARG delays driving the P_CRCA by at least one Data Release Delay plus one
Bus Settle Delay after negating the C/D signal
2) The INIT releases the P_CRCA signal within one Data Release Delay after the
transition of the C/D signal to false.
When switching the P_CRCA signal direction from in (TARG driving) to out (INIT
driving)
1) The TARG releases the P_CRCA signal within one System Deskew Delay after
asserting the C/D signal.
2) The INIT negates the P_CRCA signal more than one System Deskew Delay after the
detection of the assertion of the C/D signal.
g) The ATN and RST signals may change as defined under the descriptions for the attention
condition and hard reset.
Figure 1.31 Switching direction of transfer over data bus
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