HSP45256 Просмотр технического описания (PDF) - Intersil

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HSP45256

Binary Correlator

Intersil 

HSP45256

The function performed by one correlation cell is:

(Di,n XNOR Ri,n) AND Mi,n

where:

Di,n = Bit i of data register n

Ri,n = Bit i of reference register n

Mi,n = Bit i of mask register n

The reference and mask bits are loaded sequentially, N bits

at a time, where N depends on the current configuration (see

Tables 2 and 9). New reference data is loaded on the rising

edge of RLOAD and new mask data is loaded on the rising

edge of CLOAD. The mask and reference bits are stored

internally in Shift Registers, so that the mask and reference

information that was loaded most recently will be used to

process the newest data. When new information is loaded in,

the previous contents of the mask and reference bits are

shifted over by one sample, and the oldest information is

lost. There are no registers in the multiplexer array (see

Block Diagram), so the data on DOUT0-7 corresponds to the

data in the last element of the correlation array. When

monitoring DOUT0-7, AUXOUT0-8, and REFOUT0-7, only

those bits listed in Table 9 are valid.

DREF

RLOAD

DCONT

(MASK)

CLOAD

TXFR

DATA

CLK

A

R

E

>G

R

E

>G

RB

E

>G

R

E

>G

R

E

>G

DREFOUT

DCONTOUT

DATAOUT

COROUT

FIGURE 3. CORRELATION CELL BLOCK DIAGRAM

DCONT

CLOAD

DREF

RLOAD

A

TXFR

B

DATA

CLK

DATA CONTROL

DR0

DR1

DR2

DR3

DR4

DR5

DR6

DR7

DR8

DR0

DR1

DR2

DR3

DR4

DR5

DR6

DR7

DR-1

DR0

D-1

D0

DR1

D1

DR2

D2

DR3

D3

DR4

D4

DR5

D5

DR6

D6

DR7

D7

FIGURE 4. CORRELATION CELL TIMING DIAGRAM

8

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