TMC2246AKEC2 Просмотр технического описания (PDF) - Fairchild Semiconductor

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TMC2246AKEC2

Image Filter 11 x 10 bit, 60 MHz

Fairchild Semiconductor 

TMC2246A

PRODUCT SPECIFICATION

Table 1. Input Register Control

ENB1-4 ENSEL

Input Register Held

1

1

Data i

1

0

Coefficient i

0

X

None

Data Formats

Fractional Two’s Complement Format (FSEL = LOW)

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 BIT

-20. 2-1 2-2 2-3 2-4 2-5 2-6 2-7 2-8 2-9 DATA (D1-4)

-21 20. 2-1 2-2 2-3 2-4 2-5 2-6 2-7 2-8 2-9 COEFFICIENT (C1-4)

-26 25 24 23 22 21 20. 2-1 2-2 2-3 2-4 2-5 2-6 2-7 2-8 2-9 SUM

Integer Two’s Complement Format (FSEL = HIGH)

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 BIT

-29 28 27 26 25 24 23 22 21 20. DATA (D1-4)

-210 29 28 27 26 25 24 23 22 21 20. COEFFICIENT (C1-4)

-215 214 213 212 211 210 29 28 27 26 25 24 23 22 21 20. SUM

Integer Two’s Complement Data / Fractional Two’s Complement Coefficient Format (FSEL = LOW)

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 BIT

-29 28 27 26 25 24 23 22 21 20. DATA (D1-4)

-21 20. 2-1 2-2 2-3 2-4 2-5 2-6 2-7 2-8 2-9 COEFFICIENT (C1-4)

-215 214 213 212 211 210 29 28 27 26 25 24 23 22 21 20. SUM

Note: A minus sign indicates the sign bit.

Figure 1. Data Formats

Equivalent Circuits and Threshold

Levels

VDD

VDD

p

Data or

Control

Input

n

p

Output

n

GND

Figure 2. Equivalent Digital Input Circuit

REV. 1.0.3 9/11/00

GND

Figure 3. Equivalent Digital Output Circuit

7

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