DEVICES INCORPORATED

L2330

Coordinate Transformer

4

Special Arithmetic Functions

09/27/2001–LDS.2330-E

15 14 13

2

1

0

NS 2

2

2

2

1

2

0

15 14 13

2

1

0

NS 2

2

2

2

1

2

0

Integer Signed Magnitude (RTP = 0, TCXY = 0)

15 14 13

2

1

0

–2

2

2

2

1

2

0

15 14 13

2

1

0

–2

2

2

2

1

2

0

Integer Two's Complement (RTP = 0, TCXY = 1)

15 14 13

2

1

0

2

2

2

2

1

2

0

15 14 13

2

1

0

*±2

2

RXOUT

PYOUT

15 14 13

2

1

0

NS 2

2

15 14 13

2

1

0

NS 2

2

Fractional Signed Magnitude (RTP = 0, TCXY = 0)

15 14 13

2

1

0

–2

2

15 14 13

2

1

0

–2

2

Fractional Two's Complement (RTP = 0, TCXY = 1)

15 14 13

2

1

0

2

0

2

2

15 14 13

2

1

0

*±2

2

*±2

and phase accumulator is modulo 2

NS denotes negative sign. (i.e. '1' negates the number)

Fract. Unsigned Mag./Two's Comp.

Integer Unsigned Magnitude

(RTP = 1)

Fract. Unsigned Mag./Two's Comp.

Fractional Unsigned Magnitude

(RTP = 1)

OVF — Overflow Flag

OVF will go HIGH on the clock the

magnitude of either of the current

Cartesian coordinate outputs exceed

the maximum range. OVF will return

LOW on the clock that the Cartesian

output value(s) return within range.

An overflow condition can only occur

when RTP is LOW.

OERX — x-coordinate/Magnitude Data

Output Enable

enabled for output. When OERX is

high-impedance state.

OEPY — y-coordinate/Phase Angle Data

Output Enable

enabled for output. When OEPY is

high-impedance state.