GRAYCHIP, INC.

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APRIL 27, 1999

GC4014 QUAD RECEIVER CHIP

DATA SHEET REV 0.6

This document contains information which may be changed at any time without notice

5.18

COEFFICIENT STORAGE PAGES (PAGES 8, 9, 10 and 11)

Addresses 16 to 31 are used to download the 32 user programmable filter coefficients when PAGE is set to

8, 9, 10 and 11. Page 8 is for coefficients 0 through 7, page 9 is for coefficients 8 through 15, page 10 is for

coefficients 16 through 23, and page 11 is for coefficients 24 through 31, where coefficient 0 is the first coefficient

and coefficient 31 is the middle coefficient of the filter’s impulse response. The 16 bit 2’s complement coefficients

are stored in two bytes, least significant byte first, for example, the LSBs of coefficient 0 are stored in address 16

and the MSBs in address 17.

TO LOAD A COEFFICIENT THE USER MUST WRITE THE LSBYTE FIRST FOLLOWED BY THE

MSBYTE. Unknown values will be written into the LSBs if the MSB is written first. The coefficient registers are write

only.