Control State Overview
MUAC Routing CoProcessor (RCP) Family
CONTROL STATE OVERVIEW
Table 1: Control State Overview
AC Bus
/W = LOW
PA:AA Scope
/W = HIGH
PA:AA
Scope
Register Read/Write
(32-bit operations)
xxx xxx 000 011
xxx nnn 000 100
xxx nnn 000 110
xxx nnn 001 000
xxx xxx 000 111
xxx nnn 000 101
xxx nnn 001 001
NOP
n/c
n/c
n/c
n/c
n/c
n/c
n/c
n/a
AS
AS
AS
n/a
AS
AS
RD NFA
RD AR
n/c
n/c
n/c
n/c
n/c
n/c
n/c
NFD
WR AR {MRnnn}
WR FR {MRnnn}
WR DS {MRnnn}
RESERVED
S
RD FR
S
RD DS
S
RD SR
HPD/S
WRs CR {MRnnn}
WRs MRnnn
RDs CR
RDs MR nnn
S
S
Memory Read/Write
(32-bit operations)
A(12:0)/ A(11:0) [/AV= LOW] WRs aaa
aaa
AS
RDs aaa
aaa
S
xxx nnn 000 000
xxx nnn 100 110
xxx nnn 100 111
xxx nnn 000 010
xxx nnn 000 001
WRs [AR] {MRnnn}
aaa
AS
RDs [AR]
aaa
S
WRs [AR]+ {MRnnn}
WRs [AR]- {MRnnn}
WRs [HPM] {MRnnn}
WRs [NFA] {MRnnn}
aaa
AS
RDs [AR]+
RDs [AR]-
aaa
S
aaa
AS
aaa
S
HPMA
NFA
HPD
NFD
RDs [HPM]
RDs [HPM]; NEXT
HPMA
HPMA
HPD
HPD
Data Move
(64-bit operations)
xxx nnn 001 100
xxx nnn 001 101
xxx nnn 001 110
MOV [AR],CR {MRnnn}
aaa
AS
MOV CR, [AR] {MRnnn}
RESERVED
aaa
AS
MOV [NFA],CR {MRnnn} NFA
MOV [HPM],CR {MRnnn} HPMA
NFD
HPD
n/c
AS
MOV CR,[HPM] {MRnnn}
HPMA
HPD
Comparison
(64-bit operations)
xxx nnn 011 000
xxx nnn 011 001
xxx nnn 011 010
xxx xxx 011 100
xxx xxx 011 011
Validity Bit Control
xxx xxx 100 000
xxx xxx 100 001
xxx xxx 100 010
xxx xxx 100 011
Initialization
CMP CR {MRnnn}
CMPs DQ {MRnnn}
CMPWs DQ {MRnnn}
CMPT DQ
HPMA
HPMA
HPMA
HPMA
HPMA
AS
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
n/c
n/c
n/c
n/c
n/c
n/a
n/a
n/a
n/a
n/a
AS
AS
HPD
HPD
NEXT
SET V@[AR]
RST V@[AR]
RST V@[HPM]
RST V@AML
aaa
AS
RD V@[AR]
RESERVED
RESERVED
RESERVED
aaa
n/c
n/c
n/c
S
aaa
AS
n/a
n/a
n/a
HPMA
HPMA
HPS
AS
xxx xxx 111 100
xxx xxx 111 101
xxx xxx 111 111
Address Register Control
xxx xxx 100 100
xxx xxx 100 101
WR PA
RST FF
RST
n/c
NFD
AS
RESERVED
RESERVED
RESERVED
n/c
n/c
n/c
n/a
n/a
n/a
n/c
All 1s
AS
INC AR
n/c
n/c
AS
AS
RESERVED
RESERVED
n/c
n/c
n/a
n/a
DEC AR
Key: aaa = Random access address
All 1s = All PA:AA outputs HIGH
AS = All selected devices
n/c = No change
NFA = Next Free address
NFD = Highest-Priority device with a Free location
s = Segment (L for DSC LOW, H for DSC HIGH)
S = Selected device
HPD = Highest-Priority device
HPMA = Highest-Priority Match address
n/a = Not applicable
The "Scope" of a control state describes which devices respond in a multi-CAM system.
The "PA:AA" field describes what is output on the PA3–0:AA11–0 bus as a result of the control state.
/AV is HIGH unless otherwise noted.
DSC must be LOW if "s" is not indicated.
Rev. 4a
17
MUSIC [ MUSIC SEMICONDUCTORS ]
