Control State Overview
MU9C4320L ATMCAM
CONTROL STATE OVERVIEW
Table 1: Control State Overview
/W = LOW
PA:AA
Scope
/W = HIGH
PA:AA
Scope
Write/Read Memory
A11–0 [/AV = LOW]
xxx nnn 000 000
xxx nnn 100 110
xxx nnn 100 111
xxx nnn 000 001
xxx nnn 000 010
WR aaa
aaa
AS
RD aaa
aaa
S
WR [AR] {MRnnn}
WR [AR]+ {MRnnn}
WR [AR]- {MRnnn}
WR [NFA] {MRnnn}
WR [HPM] {MRnnn}
aaa
AS
RD [AR]
aaa
S
aaa
AS
RD [AR]+
aaa
S
aaa
AS
RD [AR]-
aaa
S
NFA
HPMA
NFD
HPD
RD [HPM]; INC MA
RD [HPM]
HPMA
HPMA
HPD
HPD
Write/Read Register
xxx nnn 000 100
xxx xxx 000 011
xxx nnn 000 110
xxx nnn 001 000
xxx xxx 000 111
xxx nnn 000 101
xxx nnn 001 001
WR AR {MRnnn}
NOP
n/c
n/c
n/c
n/c
n/c
n/c
n/c
AS
n/a
AS
AS
n/a
AS
AS
RD AR
n/c
n/c
n/c
n/c
n/c
n/c
n/c
S
RD NFA
RD FR
NFD
WR FR {MRnnn}
WR DS {MRnnn}
RESERVED
S
RD DS
S
RD SR
HPD/S
WR CR {MRnnn}
WR MRnnn
RD CR
RD MRnnn
S
S
Data Move
xxx nnn 001 100
xxx nnn 001 101
xxx nnn 001 110
MOV [AR],CR {MRnnn}
MOV [NFA],CR {MRnnn}
MOV [HPM],CR {MRnnn}
aaa
AS
MOV CR,[AR] {MRnnn}
RESERVED
aaa
AS
NFA
NFD
HPD
n/c
n/a
HPMA
MOV CR,[HPM] {MRnnn}
HPMA
HPD
Comparison
xxx nnn 011 000
xxx nnn 011 001
xxx nnn 011 010
xxx xxx 011 011
CMP CR {MRnnn}
CMP DQ {MRnnn}
CMPW DQ {MRnnn}
INC MA
HPMA
HPMA
HPMA
HPMA
AS
RESERVED
RESERVED
RESERVED
RESERVED
n/c
n/c
n/c
n/c
n/a
n/a
n/a
n/a
AS
AS
HPD
Set Validity
xxx xxx 100 000
xxx xxx 100 001
xxx xxx 100 010
xxx xxx 100 011
Address Register Control
xxx xxx 100 100
xxx xxx 100 101
VP Table Control
xxx xxx 101 000
xxx xxx 101 001
Initialization
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
HPD
AS
Inc AR
n/c
n/c
AS
AS
RESERVED
RESERVED
n/c
n/c
n/a
n/a
Dec AR
SET VP@[AR]
RST VP@[AR]
aaa
aaa
AS
AS
RD VP@[AR]
RESERVED
aaa
n/c
S
n/a
xxx xxx 111 100
xxx xxx 111 101
xxx xxx 111 111
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
Key: aaa = Random access address
All 1s = All PA:AA outputs HIGH
AS = All selected devices
n/a = Not applicable
n/c = No change
NFA = Next Free address
HPD = Highest-Priority device
NFD = Highest-Priority device with a Free location
S = Selected device
HPMA = Highest-Priority Match address
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.
Rev. 3
19
MUSIC [ MUSIC SEMICONDUCTORS ]
