SH7764 Datasheet, PDF (1274/1752 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC Engine Family SH-4A Series

Section 23 G2D
The Z clipping area MIN register (ZCLPMINR) is a 32-bit readable/writable register which
specifies the minimum value of the Z clipping area in the single-precision floating-point format
defined by the IEEE 754 standard. Since the setting is compared with the W value, set a value
corresponding to W in ZCLPMINR.
Since internal computation is carried out with 32-bit fixed-point operations (16-bit integer portion
and 16-bit fractional portion), ZCLPMINR should be set within the range of 2^−16 ≤ ZCLPMINR ≤
ZCLPMAXR < 2¹⁵.
ZCLPMINR retains its value at a reset.
Note: For details on the setting range, see (2) 4 × 4 Matrix Operation, to (5) Coordinate
Transformation Flow and Saturation Processing, in section 23.1.2, Basic Functions.
(14) Z Clipping Area MAX Register (ZCLPMAXR)
Offset:
H'134
Initial Value: Undefined
The Z clipping area MAX register (ZCLPMAXR) is a 32-bit readable/writable register which
specifies the maximum value of the Z clipping area in the single-precision floating-point format
defined by the IEEE 754 standard. Since the setting is compared with the W value, set a value
corresponding to W in ZCLPMAXR.
Since internal computation is carried out with 32-bit fixed-point operations (16-bit integer portion
and 16-bit fractional portion), ZCLPMAXR should be set within the range of 2^−16 ≤ ZCLPMINR ≤
ZCLPMAXR < 2¹⁵.
ZCLPMAXR retains its value at a reset.
Note: For details on the setting range, see (2) 4 × 4 Matrix Operation, to (5) Coordinate
Transformation Flow and Saturation Processing, in section 23.1.2, Basic Functions.
(15) Z Saturation Value MIN Register (ZSATVMINR)
Offset:
H'138
Initial Value: Undefined
The Z saturation value MIN register (ZSATVMINR) is a 32-bit readable/writable register which
specifies the minimum Z saturation value in the single-precision floating-point format defined by
Rev. 1.00 Nov. 22, 2007 Page 1218 of 1692
REJ09B0360-0100