11.7. VPC3230D
11.7.1. General Description
The VPC 323xD is a high-quality, single-chip video front-end, which is targeted for 4:3 and 16:9, 50/60-Hz
and 100/120 Hz TV sets. It can be combined with other members of the DIGIT3000 IC family (such as
DDP 331x) and/or it can be used with 3rd-party products.
The main features of the VPC 323xD are
? high-performance adaptive 4H comb filter Y/C separator with adjustable vertical peaking
? multi-standard colour decoder PAL/NTSC/SECAM including all substandards
? four CVBS, one S-VHS input, one CVBS output
? two RGB/YCr Cb component inputs, one Fast Blank (FB) input
? integrated high-quality A/D converters and associated clamp and AGC circuits
? multi-standard sync processing
? linear horizontal scaling (0.25 ... 4), as well as non-linear horizontal scaling ?Panorama-vision?
? PAL+ preprocessing
? line-locked clock, data and sync, or 656-output interface
? peaking, contrast, brightness, color saturation and tint for RGB/ YC r C b and CVBS/ S-VHS
? high-quality soft mixer controlled by Fast Blank
? PIP processing for four picture sizes (1/4, 1/9, 1/16 or 1/36 of normal size) with 8-bit resolution
? 15 predefined PIP display configurations and expert mode (fully programmable)
? control interface for external field memory
2
? IC-bus interface
? one 20.25-MHz crystal, few external components
? 80-pin PQFP package
11.7.2. Pin Connections and Short Descriptions
NC = not connected
LV = if not used, leave vacant
X = obligatory; connect as described in circuit diagram
SUPPLYA = 4.75...5.25 V, SUPPLYD = 3.15...3.45 V
Pin No. Pin Name Type Connection Short Description
PQFP (if not used)
80-pin
1 B1/CB1IN IN VREF Blue1/Cb1 Analog Component Input
2 G1/Y1IN IN VREF Green1/Y1 Analog Component Input
3 R1/CR1IN IN VREF Read1/Cr1 Analog Component Input
4 B2/CB2IN IN VREF Blue2/Cb2 Analog Component Input
5 G2/Y2IN IN VREF Green2/Y2 Analog Component Input
6 R2/CR2IN IN VREF Read2/Cr2 Analog Component Input
7 ASGF X Analog Shield GNDF
8 FFRSTWIN IN LV or GNDD FIFO Reset Write Input
9 VSUPCAP OUT X Digital Decoupling Circuitry Supply Voltage
10 VSUPD SUPPLYD X Supply Voltage, Digital Circuitry
11 GNDD SUPPLYD X Ground, Digital Circuitry
12 GNDCAP OUT X Digital Decoupling Circuitry GND
2
13 SCL IN/OUT X IC Bus Clock
2
14 SDA IN/OUT X IC Bus Data
15 RESQ IN X Reset Input, Active Low
16 TEST IN GNDD Test Pin, connect to GNDD
17 VGAV IN GNDD VGAV Input
18 YCOEQ IN GNDD Y/C Output Enable Input, Active Low
19 FFIE OUT LV FIFO Input Enable
20 FFWE OUT LV FIFO Write Enable
21 FFRSTW OUT LV FIFO Reset Write/Read
22 FFRE OUT LV FIFO Read Enable
23 FFOE OUT LV FIFO Output Enable
24 CLK20 IN/OUT LV Main Clock output 20.25 MHz
25 GNDPA OUT X Pad Decoupling Circuitry GND
26 VSUPPA OUT X Pad Decoupling Circuitry Supply Voltage
27 LLC2 OUT LV Double Clock Output
28 LLC1 IN/OUT LV Clock Output
29 VSUPLLC SUPPLYD X Supply Voltage, LLC Circuitry
10
17? TFT TV Service Manual 21/09/2004 |
ACEC
