Motorola MPC8260 - Manual (Page 243)

MOTOROLA Chapter 8. The 60x Bus 8-11
Part III. The Hardware Interface
01000 sync Address
only Address only (if
enabled) sync (if enabled) Not applicable
to MPC8260 Assert AACK. BG is
negated until
MPC8260 buffers are
ßushed.
01100 Kill block Address
only Address only dcbz or dcbi (if
enabled) Flush, cancel
reservation AACK is asserted.
10000 eieio Address
only Address only (if
enabled) eieio (if enabled) Not applicable
to MPC8260 Assert AACK. BG is
negated until
MPC8260 buffers are
ßushed.
101 00 Graphics
write Single-beat
write Single-beat
write (non-
GLB) ecowx Not applicable
to MPC8260 No action.
11000 TLB
invalidate Address
only Not applicable
to MPC8260 Not applicable to
MPC8260 Not applicable
to MPC8260 AACK is asserted;
MPC8260 takes no
further action.
11100 Graphics
read Single-beat
read Single-beat
read (non-GBL) eciwx Not applicable
to MPC8260 MPC8260 takes no
action.
00001 lwarx
reservation
set Address
only Not applicable
to MPC8260 Not applicable to
MPC8260 Not applicable
to MPC8260 Address-only
operation. AACK is
asserted; MPC8260
takes no further action.
00101 Reserved Ñ Not applicable
to MPC8260 Not applicable to
MPC8260 Not applicable
to MPC8260 Illegal
01001 tlbsync Address
only Not applicable
to MPC8260 Not applicable to
MPC8260 Not applicable
to MPC8260 Address-only
operation. AACK is
asserted; MPC8260
takes no further action.
01101 icbi Address
only Not applicable
to MPC8260 Not applicable to
MPC8260 Not applicable
to MPC8260 Address-only
operation. AACK is
asserted; MPC8260
takes no further action.
1XX01 Reserved
for customer Ñ Not applicable
to MPC8260 Not applicable to
MPC8260 Not applicable
to MPC8260 Illegal
00010 WR w/ßush Single-beat
write or
Burst Single-beat
write CI, WT store, or non-
processor master
under Flush, cancel
reservation Write, assert AACK
and TA.
00110 WR w/Kill Burst Burst (non-
GLB) Castout, ca-op push,
or snoop copyback Kill, cancel
reservation Write, assert AACK
and TA.
01010 Read Single-beat
read or burst Single-beat
read CI load, CI I-fetch or
nonprocessor master Clean or ßush Read, assert AACK
and TA.
Table 8-2. Transfer Type Encoding (Continued)
TT[0Ð4] 1
60x Bus SpeciÞcation 2 MPC8260 as Bus Master
MPC8260 as
Snooper
MPC8260 as Slave
Command Transaction Bus Trans. Transaction Source Action on Hit Action on Slave Hit