CS7654 Datasheet, PDF (44/62 Pages) Cirrus Logic – CCD COLOR SPACE PROCESSOR WITH ANALOG OUTPUT

CS7654
Blue Balance Register (09h at SA 0x34h)
7
6
5
4
3
2
1
0
BB7
BB6
BB5
BB4
BB3
BB2
BB1
BB0
R/W
BB[7:0]
The Blue Balance register controls the blue contribution to the B-Y chrominance signal. When
the register value is 00h, the blue contribution is minimized; when the register value is FFh, the
blue contribution is maximized. When the AWB correction is in progress, this register value is
adjusted such that the absolute magnitude of the B-Y signal is minimized.
Red Saturation Register (0Ah at SA 0x34h)
7
6
5
4
3
2
1
0
RS7
RS6
RS5
RS4
RS3
RS2
RS1
RS0
R/W
RS[7:0]
The Red Saturation register value controls the amplitude of the R-Y chrominance signal. When
the register value is 00h, the amplitude of the R-Y is minimized; when the register value is FFh,
the amplitude of the R-Y is maximized.
Blue Saturation Register (0Bh at SA 0x34h)
7
6
5
4
3
2
1
0
BS7
BS6
BS5
BS4
BS3
BS2
BS1
BS0
R/W
BS[7:0]
The Blue Saturation register value controls the amplitude of the B-Y chrominance signal. When
the register value is 00h, the amplitude of the B-Y is minimized; when the register value is FFh,
the amplitude of the B-Y is maximized.
Gamma Correction Register (0Ch at SA 0x34h)
Writing to the gamma register (0Ch at SA 0x34h) selects the R, G, and/or B RAM. Continuing data writes without
sending a stop bit after the register write results in writes to the ram locations starting with 00h and continuing to
FFh. Reads from register 0Ch function in a similar way. NOTE: All three gamma rams may be selected for simulta-
neous writes, but read should be done one ram table at a time.
7
GC7
6
GC6
5
GC5
4
3
GC4
GC3
R/W
2
GC2
1
GC1
0
GC0
GC0
Logic “1” selects BLUE gamma RAM for subsequent access.
GC1
Logic “1” selects GREEN gamma RAM for subsequent ram access.
GC2
Logic “1” selects RED gamma RAM for subsequent ram access.
GC[0:7]
Provide R/W access to RAM after gamma RAM table has been selected.
Test Control A Register (0Eh at SA 0x34h)
This register is reserved
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