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PDF HD49815 Data sheet ( Hoja de datos )
| Número de pieza | HD49815 | |
| Descripción | Digital Camera Signal Processor | |
| Fabricantes | Hitachi Semiconductor | |
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HD49815TF
Digital Camera Signal Processor
ADE-207-316 (Z)
1st Edition
Sep. 1999
Description
The HD49815TF is a CMOS IC that has been developed as a digital signal-processing IC for CCD-camera
digital-signal-processing systems.
Functions
• CCD-sensor drive-pulse generation (TG)
• Digital AGC (automatic gain control)
• Color signal separation circuit
• RGB matrix
• RGB gain
• RGB and Y gamma
• Color-difference matrix
• Enhancer
• RGB and Y setup
• Digital I/F (4:2:2)
• Zoom control
• Mirror reversal
• Synchronization signal generator for encoding (SSG)
• AWB, AE, and AF detection
• Two-channel 8-bit D/A converter
Features
• The HD49815TF provides camera-signal processing, TG, SSG, zoom, and D/A functions and other
functions in a single chip and supports high system-integration level.
• In conjunction with the HD49323AF-01 (CDS/AGC + 10-bit ADC) and the control microcomputer, the
HD49815TF forms a three-chip kit that can implement an optimal CCD-camera digital-signal-
processing system.
• The HD49815TF provides the zoom function and controls the 1- to 256- times linear zoom. It also
provides the half-mirror function.
1 page  
HD49815TF
Pin Description (cont)
Pin No. Symbol Pin Name
I/O Description
31 PLL_N PLL negative
O PLL signal output
32 PLL_P PLL positive
O PLL signal output
33 VR Vertical reset
I Vertical synchronization signal input
34 X2I X’tal 2 input
I 4fsc oscillator input
35
X2O
X’tal 2 output
O 4fsc oscillator output
36
FSC
Sub carrier frequency
O fsc output
37 VSS GND
— GND
38
AVDD
Analog VCC2
— Analog system power supply: 3.3 V
39 VSS GND
— GND
40
AVDD
Analog VCC2
— Analog system power supply: 3.3 V
41 VSS GND
— GND
42
C_OUT C analog signal output
O Chrominance-signal analog output
43
CBU
Current buffer upper
I D/A upper current source
44 CBL Current buffer lower
I D/A lower current source
45 REXT Reference resister EXT I Reference voltage input
46
Y_OUT Y analog signal output
O Luminance-signal analog output
47 VSS GND
— GND
48
AVDD
Analog VCC2
— Analog system power supply: 3.3 V
49 VSS GND
— GND
50 VDD VCC2
— Digital system power supply: 3.3 V
51 VSS GND
— GND
52
DICK
Digital interface clock
O Digital interface clock output
53
NRYBY R-Y, B-Y phase output
O Color-difference signal phase clock
54 YPO (8) Y parallel output (8); MSB O Luminance-signal digital output MSB
55 YPO (7) Y parallel output (7)
O Luminance-signal digital output
56 YPO (6) Y parallel output (6)
O Luminance-signal digital output
57 YPO (5) Y parallel output (5)
O Luminance-signal digital output
58 YPO (4) Y parallel output (4)
O Luminance-signal digital output
59 YPO (3) Y parallel output (3)
O Luminance-signal digital output
60 YPO (2) Y parallel output (2)
O Luminance-signal digital output
61 YPO (1) Y parallel output (1) ; LSB O Luminance-signal digital output LSB
62
YPI (8) Y parallel input (8); MSB I
Luminance-signal digital input MSB
63 YPI (7) Y parallel input (7)
I Luminance-signal digital input
64 YPI (6) Y parallel input (6)
I Luminance-signal digital input
I/O
Format
ZC2
ZC2
ICSD
IQ2
OQ2
ICZC2R
GNDA
VCCA
GNDA
VCCA
GNDA
OA
IA
IA
IA
OA
GNDA
VCCA
GNDA
VCCI
GNDI
ICZC2R
ICZC2R
OC2R
OC2R
OC2R
OC2R
OC2R
OC2R
OC2R
OC2R
ICD
ICD
ICD
5
5 Page 
HD49815TF
Electrical Characteristics (VCC1 = 4.75 V to 5.25 V, VCC2 = 2.85 V to 3.15 V,
AVCC = 2.85 V to 3.15 V, Ta = 25°C)
Item
Symbol Min
Typ Max
Test Conditions
Unit Note
CMOS-level
input voltage
CMOS schmitt
input voltage
Output voltage
VIHC
VILC
VTC+
VTC–
VOHC1
VCC2×0.75
0.0
2.50
0.0
VCC1–0.5
—
—
—
—
—
VCC2
VCC2×0.20
VCC2
0.60
—
V
V
V
V
V
VCC1 = 5 V
VCC2 = 3 V
IOH = –200 µA
5 V system pin
1
VOLC1
—
— 0.4
V IOL = 200 µA
5 V system pin
VOHC2
VCC2–0.5 —
—
V IOH = –200 µA
1, 5
3 V system pin
VOLC2
—
— 0.4
V IOL = 200 µA
1, 6
3 V system pin
Input leakage current
Output leakage current
I LI
I LO
—
—
— 1.0
— 1.0
µA VIN = 0 V to VCC
µA Output Hi-Z
conditions
2
2
Pull-down current
Power dissipation
I PD
Popr
5
—
Analog output voltage
(full scale)
Vfull
0.80
— 100
— 450
1.00 1.20
µA
mW
V
VIN = VCC2 = 3 V
VCC1 = 5 V,
VCC2 = 3 V,
AVCC = 3 V
3
3, 4
Analog output voltage
(zero scale)
Vzero
–0.20
0.00 0.20
V
Differential linearity
DNL
–2.0
— 2.0
LSB
Notes: 1. Output voltage must be measured in the steady state.
2. Except for pins that include a pull-down resistor.
3. Guaranteed at CBU = 0.1 µF, CBL = 0.1 µF, REXT = 3.4 kΩ, analog output load resistance = 500
Ω, and Ta = 25°C.
4. Applied to pins indicated as OA in the I/O format column of the pin-functions table.
5. Because VOH of pin 31 cannot be measured logically, it was not tested.
6. Because VOL of pin 32 cannot be measured logically, it was not tested.
7. VCC1, VCC2, and AVCC indicate the 5 V system power supply, the 3 V system power supply, and
the analog system power supply, respectively. VCC indicates VCC1, VCC2, and AVCC.
8. The voltage range of pin 109 (VCCC35) is VCC = 2.85 V to 5.25 V.
11
11 Page | ||
| Páginas | Total 25 Páginas | |
| PDF Descargar | [ Datasheet HD49815.PDF ] | |
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