PDSP16116 데이터 시트보기 (PDF) - Zarlink Semiconductor Inc

부품명

상세내역

일치하는 목록

PDSP16116

16 by 16 Bit Complex Multiplier

Zarlink Semiconductor Inc 

PDSP16116/A/MC

AR

SOBFP

AR15:13

EOPSS

BR

BI

WR

WI

A

XR XI YR YI

WTA WTB

AI

AI15:13

A

PDSP1601/A

SFTA

C

PDSP16116/A

PR

PI

PDSP1601/A

SFTA

C

DAR

DAI

A

B

PDSP16318/A

SFTR

C

D

B

A

PDSP16318/A

SFTR

C

D

A'R

A'I

WTOUT

GWR

B'R

B'I

Figure 5 - FFT Butterfly Processor

At the end of each constituent pass of the FFT, the

positions of the binary point supported may change to reflect

the trend of data increase or decreases in magnitude. Hence,

in the pass following that of the above example, the four

positions of binary point supported may be change to:

XX.XXXXXXXXXXXX

XXX.XXXXXXXXXXX

XXXX.XXXXXXXXXX

XXXXX.XXXXXXXXX

word tag = 00

word tag = 01

word tag = 10

word tag = 11

This variation in the range of binary points supported from

pass to pass (i.e. the movement of the binary point relative to

its position in the original data) is recorded in the GWR.

Thus we can determine the position of the binary point

relative to its initial position by modifying the value of GWR by

WTOUT for a given word as shown in Table 6.

As an example, if GWR=01001 and WTOUT=10 then the

binary point has moved 10 places to the right of its original

position.

12

Share Link: