Mips Technologies R4000 - Read Cycles

MIPS R4000 Microprocessor User's Manual 353
System Interface
Figure 12-36 External Snoop Request, System Interface in Master State
Figure 12-37 External Snoop Request, System Interface in Slave State
SCycle
1 2 3 4 5 6 7 8 9 10 11 12
SClock
SysAD Bus
Addr Unsd
SysCmd Bus
Snoop CEOD
ValidOut*
ValidIn*
ExtRqst*
Release*
5
1
2
4
6
Master
Slave
Master
3
SCycle
1 2 3 4 5 6 7 8 9 10 11 12
SClock
SysAD Bus
Addr Unsd
SysCmd Bus
Snoop CEOD
ValidOut*
ValidIn*
ExtRqst*
Release*
5
4
6
Slave
Master
Slave
3