MUAC Routing CoProcessor (RCP) Family
Control State Descriptions
Control State:
Mnemonic:
Indirect Write at Address;
Increment Address Register
WRs[AR]+{MRnnn}
Control State:
Mnemonic:
Indirect Read at Address;
Decrement Address Register
RDs[AR]-
Binary Op-Code: XXX nnn 100 110
Binary Op-Code: XXX XXX 100 111
/W: LOW /AV: HIGH PA:AA: aaa Scope: AS
Description: Writes data from the DQ31-0 bus to bits
31-0 (DSC LOW) or 63-32 (DSC HIGH) of the location
defined by the contents of the Address register. The
validity of the location is set by the state of the /VB input,
/VB = LOW: Valid, /VB = HIGH: Empty. The write is
masked by bits 31-0 (DSC LOW) or 63-32 (DSC HIGH)
of the contents of Mask Register nnn. When nnn=000 no
mask is used; when masking is selected, only bits in the
addressed location that correspond to LOW values in the
selected mask register are updated. The contents of the
Address register are incremented.
/W: HIGH /AV: HIGH PA:AA: aaa Scope: S
Description: Reads data from bits 31–0 (DSC LOW) or
63-32 (DSC HIGH) of the location defined by the contents
of the Address register to the DQ31–0 bus. This control
state provides indirect random access memory reads.
During the Read cycle, the /VB line carries the Validity Bit
value of the addressed location. The contents of the
Address register are decremented.
Control State:
Write to Highest-Priority
Matching Location
Mnemonic:
WRs[HPM]{MRnnn}
Binary Op-Code: XXX nnn 000 010
Control State:
Indirect Read at Address;
Increment Address Register
RDs[AR]+
/W: LOW /AV: HIGH PA:AA: HPMA Scope: HPD
Description: Writes data from the DQ31-0 bus to bits
31-0 (DSC LOW) or 63-32 (DSC HIGH) of the
highest-priority matching location in the Memory array.
The validity of the location is set by the state of the /VB
input, /VB=LOW: Valid, /VB=HIGH: Empty. The write is
masked by bits 31–0 (DSC LOW) or 63-32 (DSC HIGH)
of the contents of Mask Register nnn. When nnn=000 no
mask is used; when masking is selected, only bits in the
addressed location that correspond to LOW values in the
selected mask register are updated.
Mnemonic:
Binary Op-Code: XXX XXX 100 110
/W: HIGH /AV: HIGH PA:AA: aaa Scope: S
Description: Reads data from bits 31-0 (DSC LOW) or
63-32 (DSC HIGH) of the location defined by the contents
of the Address register to the DQ31-0 bus. This control
state provides indirect random access memory reads.
During the Read cycle, the /VB line carries the Validity Bit
value of the addressed location. The contents of the
Address register are incremented.
Control State:
Read Highest-Priority
Matching Location
RDs[HPM]
Control State:
Indirect Write at Address;
Decrement Address Register
WRs[AR]-{MRnnn}
Mnemonic:
Mnemonic:
Binary Op-Code: XXX XXX 000 010
Binary Op-Code: XXX nnn 100 111
/W: HIGH /AV: HIGH PA:AA: HPMA Scope: HPD
Description: Reads data from bits 31–0 (DSC LOW) or
63-32 (DSC HIGH) the location defined by the
highest-priority matching location to the DQ31–0 bus. In
the event that the previous Comparison cycle resulted in a
mismatch, the DQ31–0 bus will remain in
high-impedance.
/W: LOW /AV: HIGH PA:AA: aaa Scope: AS
Description: Writes data from bits 31–0 (DSC LOW) or
63-32 (DSC HIGH) of the DQ31–0 bus to the location
defined by the contents of the Address register. The
validity of the location is set by the state of the /VB input,
/VB = LOW: Valid, /VB = HIGH: Empty. The write is
masked by bits 31–0 (DSC LOW) or 63-32 (DSC HIGH)
of the contents of Mask Register nnn. When nnn=000 no
mask is used; when masking is selected, only bits in the
addressed location that correspond to LOW values in the
selected mask register are updated. The contents of the
Address register are decremented.
20
Rev. 4a
MUSIC [ MUSIC SEMICONDUCTORS ]
