Motorola PowerQUICC II MPC8280 Series Reference Manual page 299

60x Bus Specification
1
TT[0–4]
Command Transaction
00000 Clean block Address only Address only (if
00100 Flush block Address only Address only (if
01000 sync Address only Address only (if
01100 Kill block Address only Address only
10000 eieio Address only Address only (if
101 00 Graphics Single-beat
write write
11000 TLB Address only Not applicable Not applicable
invalidate
11100 Graphics Single-beat
read read
00001 lwarx Address only Not applicable Not applicable
reservation
set
00101 Reserved —
01001 tlbsync Address only Not applicable Not applicable
01101 icbi Address only Not applicable Not applicable
1XX01 Reserved —
for
customer
MOTOROLA
Freescale Semiconductor, Inc.
Table 8-2. Transfer Type Encoding
2
MPC8280 as Bus Master
Bus Trans. Transaction Source
dcbst (if enabled)
enabled)
dcbf (if enabled)
enabled)
sync (if enabled)
enabled)
dcbz or dcbi (if
enabled)
eieio (if enabled)
enabled)
Single-beat ecowx
write
(non-GBL)
Single-beat eciwx
read
(non-GBL)
Not applicable Not applicable
Not applicable Not applicable
Chapter 8. The 60x Bus
For More Information On This Product,
Go to: www.freescale.com
Address Tenure Operations
MPC8280 as MPC8280
Snooper as Slave
Action on Hit Action on Slave Hit
Not applicable AACK asserted;
MPC8280 takes no
further action.
Not applicable AACK is asserted;
MPC8280 takes no
further action.
Not applicable Assert AACK. BG is
negated until
MPC8280 buffers are
flushed.
Flush, cancel AACK is asserted.
reservation
Not applicable Assert AACK. BG is
negated until
MPC8280 buffers are
flushed.
Not applicable No action.
Not applicable AACK is asserted;
MPC8280 takes no
further action.
Not applicable MPC8280 takes no
action.
Not applicable Address-only
operation. AACK is
asserted; MPC8280
takes no further action.
Not applicable Illegal
Not applicable Address-only
operation. AACK is
asserted; MPC8280
takes no further action.
Not applicable Address-only
operation. AACK is
asserted; MPC8280
takes no further action.
Not applicable Illegal
8-11