XRD98L63 Datasheet, PDF (10/41 Pages) Exar Corporation – CCD Image Digitizers with CDS, PGA and 12-Bit A/D

XRD98L63
PGA00 Register
PGA00
default
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
PGA00[9] PGA00[8] PGA00[7] PGA00[6] PGA00[5] PGA00[4] PGA00[3] PGA00[2] PGA00[1] PGA00[0]
0
0
0
0
0
0
0
0
0
0
PGA00[9:0] is used to set the gain of the Programmable Gain Amplifier (PGA).
Code = 0000000000 is minimum gain (6dB). Code ≥ 1001111111 is maximum gain (36dB).
See the “Programmable Gain Amplifier” (pg. 16) and the “Multiple Gain Mode” (pg. 30) sections for more
information.
Offset Register
Offset
default
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
OB[7]
OB[6]
OB[5]
OB[4]
OB[3]
OB[2]
OB[1]
OB[0]
0
0
1
0
0
0
0
0
0
0
OB[7:0] is used by the Offset Calibration logic as the target output code for Optical Black pixels.
See the “Black Level Offset Calibration” section (pg. 19) for more information.
PGA01, PGA10 and PGA11 Registers
PGA01
default
PGA10
default
PGA11
default
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
PGA01[8] PGA01[7] PGA01[6] PGA01[5] PGA01[4] PGA01[3] PGA01[2] PGA01[1] PGA01[0]
0
0
0
0
0
0
0
0
0
0
PGA10[8] PGA10[7] PGA10[6] PGA10[5] PGA10[4] PGA10[3] PGA10[2] PGA10[1] PGA10[0]
0
0
0
0
0
0
0
0
0
0
PGA11[8] PGA11[7] PGA11[6] PGA11[5] PGA11[4] PGA11[3] PGA11[2] PGA11[1] PGA11[0]
0
0
0
0
0
0
0
0
0
0
PGA01[8:0], PGA10[8:0] and PGA11[8:0] are used in the Multiple Gain mode to program the gain ratios for
different pixel colors. See the “Multiple Gain Mode” section (pg. 30) for more information.
OB Even Gain & OB Odd Gain Registers
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
OB Even Gain
OBE[8] OBE[7] OBE[6] OBE[5] OBE[4] OBE[3] OBE[2] OBE[1] OBE[0]
default
0
0
0
0
0
0
0
0
0
0
OBE[8:0] is used in the Multiple Gain mode to program the gain to be applied to Optical Black pixels on Even
lines during Offset Calibration. OBO[8:0] is used in the Multiple Gain mode to program the gain to be applied
to Optical Black pixels on Odd lines during Offset Calibration. See the “Multiple Gain Mode” section (pg. 30)
for more information.
Even Line and Odd Line Registers
Even Line
default
Odd Line
default
D9
PRE[1]
0
PRO[1]
0
D8
PRE[0]
1
PRO[0]
1
D7
ELP4[1]
0
OLP4[1]
0
D6
ELP4[0]
0
OLP4[0]
0
D5
ELP3[1]
0
OLP3[1]
0
D4
ELP3[0]
0
OLP3[0]
0
D3
ELP2[1]
1
OLP2[1]
0
D2
ELP2[0]
1
OLP2[0]
0
D1
ELP1[1]
1
OLP1[1]
0
D0
ELP1[0]
0
OLP1[0]
1
The Even Line and Odd Line Registers are used to program the pixel patterns for Even and Odd lines in the
Multiple Gain mode. See the “Multiple Gain Mode” section (pg. 30) for more information.
Calibration Register
Calibration
default
D9
D8
D7
D6
D5
D4
D3
D2
OBdel[1] OBdel[0] Avg[1] Avg[0] DNS[1] DNS[0] Mode
0
0
0
1
0
0
1
0
D1
D0
Hold ManCal
0
0
The Calibration register is used to program various options for the Offset Calibration logic.
OBdel[1:0], sets the number of Fringe pixels which should not be used for Black Level Calibration.
Avg[1:0], sets the number of OB pixels to average, 00=32 pix, 01=64 pix, 10=128 pix, 11=256 pix.
DNS[1:0], sets the Digital Noise Suppression filter width, 00=no filter, 01=narow, 10=med, 11=wide.
Mode, sets Calibration mode. 0=Line mode, 1=Frame mode (not supported at this time).
Hold, used to stop calibration updates. 0=Calibration active. 1=stop, hold current Calibration values.
ManCal, used to manually program the Offset DACs. 0=automatic mode. 1=manual mode.
See the “Black Level Offset Calibration” section (pg. 19) for more information.
Rev.1.01
10