STV-5410-R01 STMICROELECTRONICS [STMicroelectronics], STV-5410-R01 Datasheet - Page 22
STV-5410-R01
Manufacturer Part Number
STV-5410-R01
Description
Mono and Colour Digital Video CMOS Image Sensors
Manufacturer
STMICROELECTRONICS [STMicroelectronics]
Datasheet
1.STV-5410-R01.pdf
(105 pages)
- Current page: 22 of 105
- Download datasheet (2Mb)
VV5410 & VV6410
note: The relationship between the programmed gain value as written to register[36] and the igain (current gain) and
cgain (capacitive gain) is as follows:
igain
If mode_select[24], bit 1 is set then igain[3:0] is the inverse of gain[3:0], i.e. if gain[3:0] = 6, igain[3:0] = 9.
If mode_select[24], bit 1 is reset then igain[3:0] is the inverse of the mirror of gain[3:0], i.e. bit 3 of igain is the inverse of bit 0 of
gain, i.e. gain = 4 and igain = 13.
cgain
cgain is a 6 bit value therefore we have to pad the 4 bits of the gain register. In 10bit modes cgain[1:0] is fixed at 2’b11 and
cgain[5:2] is set to gain[7:4]. In the 9bit modes cgain[1:0] is also set to 2’b11, however cgain[5:2] is set to gain[7:4] divided by 2,
thus gain[7:4] = 4’b1111 gives cgain[5:0] = 6’b011111.
6.2.1
To ensure optimum sensor performance it is recommended that the igain setting, controlled by the ls nibble of serial
register[36
6.3
Although the clock divisor register is an 8 bit register the user only has write access to the lower 4 bits as described above. The
upper 4 bits of the register are altered automatically when the video mode is changed by writing to Setup0[16] register. The upper
4 bits are pre-programmed as follows:
22/105
gain[7:0]
Clock Division
8’hfd
8’hfb
8’hf9
8’hf8
8’hf7
8’hf6
8’hf5
8’hf4
8’hf3
8’hf2
8’hf1
8’hf0
8’hfe
8’hfa
8’fc
Recommended Gain Settings
10
], be limited to 12.
igain[3:0]
10 (1010
11 (1011
12 (1100
13 (1101
14 (1110
15 (1111
1 (0001
2 (0010
3 (0011
4 (0100
5 (0101
6 (0110
7 (0111
8 (1000
9 (1001
10bit ADC mode
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
cgain[5:0]
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
Commercial in confidence
Table 7 : Analogue Gain Settings
cd5410-6410f-3-0.fm
Overall
2.2857
2.0000
1.7778
1.6000
1.4545
1.3333
1.2308
1.1429
1.0667
1.0000
Gain
8.000
5.333
4.000
3.200
2.667
gain[7:0]
8’hfd
8’hfb
8’hf9
8’hf8
8’hf7
8’hf6
8’hf5
8’hf4
8’hf3
8’hf2
8’hf1
8’hf0
8’hfe
8’hfa
8’fc
igain[3:0]
10 (1010
11 (1011
12 (1100
13 (1101
14 (1110
15 (1111
1 (0001
2 (0010
3 (0011
4 (0100
5 (0101
6 (0110
7 (0111
8 (1000
9 (1001
9bit ADC mode
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
cgain[5:0]
31
31
31
31
31
31
31
31
31
31
31
31
31
31
31
Exposure Control
Overall
2.2857
2.0000
1.7778
1.6000
1.4545
1.3333
1.2308
1.1429
1.0667
1.0000
Gain
8.000
5.333
4.000
3.200
2.667
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