L2330 View Datasheet(PDF) - LOGIC Devices
Part Name
Description
MFG CO.
'L2330' PDF : 14 Pages View PDF
DEVICES INCORPORATED
L2330
Coordinate Transformer
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
When OERX is LOW, RXOUT15-0 is
enabled for output. When OERX is
HIGH, RXOUT15-0 is placed in a
high-impedance state.
OEPY — y-coordinate/Phase Angle Data
Output Enable
When OEPY is LOW, PYOUT15-0 is
enabled for output. When OEPY is
HIGH, PYOUT15-0 is placed in a
high-impedance state.
FIGURE 1B. OUTPUT FORMATS
RXOUT
PYOUT
15 14 13
NS 214 213
Integer Signed Magnitude (RTP = 0, TCXY = 0)
210
22 21 20
15 14 13
NS 214 213
210
22 21 20
15 14 13
–215 214 213
Integer Two's Complement (RTP = 0, TCXY = 1)
210
22 21 20
15 14 13
–215 214 213
210
22 21 20
Integer Unsigned Magnitude
15 14 13
215 214 213
210
22 21 20
(RTP = 1)
Fract. Unsigned Mag./Two's Comp.
15 14 13
*±20 2–1 2–2
210
2–13 2–14 2–15
15 14 13
NS 2–1 2–2
Fractional Signed Magnitude (RTP = 0, TCXY = 0)
210
2–13 2–14 2–15
15 14 13
NS 2–1 2–2
210
2–13 2–14 2–15
Fractional Two's Complement (RTP = 0, TCXY = 1)
15 14 13
–20 2–1 2–2
210
2–13 2–14 2–15
15 14 13
–20 2–1 2–2
210
2–13 2–14 2–15
(RTP = 1)
Fractional Unsigned Magnitude
Fract. Unsigned Mag./Two's Comp.
15 14 13
20 2–1 2–2
210
2–13 2–14 2–15
15 14 13
*±20 2–1 2–2
210
2–13 2–14 2–15
*±20 denotes two's complement sign or highest magnitude bit. Since phase angles are modulo 2π
and phase accumulator is modulo 232, this bit may be regarded as ±π.
NS denotes negative sign. (i.e. '1' negates the number)
Special Arithmetic Functions
4
09/27/2001–LDS.2330-E
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