z86229 ZiLOG Semiconductor, z86229 Datasheet

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z86229

Manufacturer Part Number
z86229
Description
Z86229 Ntsc Line 21 Ccd Decoder
Manufacturer
ZiLOG Semiconductor
Datasheet

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) ' 0 ' 4 # . & ' 5 % 4 + 2 6 + 1 0
Capable of processing Vertical Blanking Interval (VBI)
data from both fields of the video frame in data, the Z86229
Line 21 Decoder offers a feature-rich solution for any tele-
vision or set-top application. The robust nature of the
Z86229 helps the device conform to the transmission format
defined in the Television Decoder Circuits Act of 1990, and
in accordance with the Electronics Industry Association
specification 608 (EIA–608).
The Line 21 data stream can consist of data from several data
channels multiplexed together. Field 1 consists of four data
channels: two Captions and two Texts. Field 2 consists of
five additional data channels: two Captions, two Texts, and
Extended Data Services (XDS). The XDS data structure is
 #   
Complete Stand-Alone Line 21 Decoder for Closed-
Captioned and Extended Data Services (XDS)
Preprogrammed to Provide Full Compliance with
EIA–608 Specifications for Extended Data Services
Automatic Extraction and Serial Output of Special
XDS Packets (Time of Day, Local Time Zone, and
Program Blocking)
Programmable XDS Filter for a Specific XDS Packet
Cost-Effective Solution for NTSC Violence Blocking
inside Picture-in-Picture (PiP) Windows
defined in EIA–608. The Z86229 can recover and display
data transmitted on any of these nine data channels.
The Z86229 can recover and output to a host processor via
the I
defined in the EIA–608 specification. The on-chip XDS fil-
ters in the Z86229 are fully programmable, enabling recov-
ery of only those XDS data packets selected by the user. This
functionality allows the device to extract the required XDS
information with proper XDS filter setup for compatibility
in a variety of TVs, VCRs, and Set-Top boxes.
In addition, the Z86229 is ideally suited to monitor Line 21
video displayed in a PiP window for violence blocking,
CCD, and other XDS data services. A block diagram of the
Z86229 is illustrated in Figure 1.
<
0 6 5 % .
Minimal Communications and Control Overhead Pro-
vide Simple Implementation of Violence Blocking,
Closed Captioning, and Auto Clock Set Features
Programmable, On-Screen Display (OSD) for Creat-
ing Full Screen OSD or Captions inside a Picture-in-
Picture (PiP) Window
User-Programmable Horizontal Display Position for
easy OSD Centering and Adjustment
I
Supports 2 Selectable I
2
2
C serial bus. The recovered XDS data packet is further
C Serial Data and Control Communication
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C Addresses
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Related parts for z86229

z86229 Summary of contents

Page 1

... Picture-in-Picture (PiP) Windows ) ' & Capable of processing Vertical Blanking Interval (VBI) data from both fields of the video frame in data, the Z86229 Line 21 Decoder offers a feature-rich solution for any tele- vision or set-top application. The robust nature of the ...

Page 2

... Line & Fld Decodes 10 11 Vss(A) RREF Serial Control Port Row Status Reg Test Reg Command Processor 4 Row Latch 10 Address MUX 6 Display RAM ADDR DEC 8 Display Latch 13 Character Generator ADDR 4 Decoder SS CTR Output Logic POR CKT Z86229 only ...

Page 3

... DC and AC Characteristics tables or Pin Description section. 18 RED  BOX 17 SDO 16 SCK 15 SDA 14 V /INTRO ( RREF 5 5 & & Note: *DIP and SOIC pin configurations are identical. Table 1. Z86229 Pin Identification*  & & & & ...

Page 4

STANDARD TEST CONDITIONS The characteristics listed below apply for standard test con- ditions as noted. All voltages are referenced to Ground. Pos- itive current flows into the referenced pin (Figure 3). & ...

Page 5

ZiLOG ELECTRICAL CHARACTERISTICS Nonstandard Video Signals must have the characteristics indicated in Tables 3–6. • • • Note: Line 21 must be in its proper position to the leading edge of the Vertical Sync signal. Table 3. Non-Standard Video Signal ...

Page 6

Table 6. Timing Signals µ µ ...

Page 7

ZiLOG PIN DEFINITIONS Inputs 2 This pin selects 28h for writing and 29h for I C SEL (Pin 1). reading when this input is Low(0). When the input is High(1), the device selects 2Ah for writing and 2Bh for reading. ...

Page 8

Reference setting resistor. Resistor must be RREF (Pin 10). 10 kOhms, ±2%. This pin provides the serial ...

Page 9

... ZiLOG Z86229 BLOCK DIAGRAM DESCRIPTION The Z86229 is designed to process both fields of Line television VBI and provide the functional performance of a Line 21 Closed-Caption decoder and Extended Data Service decoder. This device requires two input signals, Composite Video and a horizontal timing signal (HIN), and several passive components for proper operation ...

Page 10

... The SPI mode is a three wire bus with the Z86229 acting as the slave device. Communication is synchronized by the SCK signal generated by the master. Typically, the serial data output is transmitted on the falling edge of SCK and the received data is captured on the rising edge of SCK ...

Page 11

... Characters are displayed as white or colored Normal Mode. dot matrix characters on an opaque background. The Box is normally black, but the Z86229 can be set to a blue back- ground Box with a serial command. The characters are de- scribed dot pattern within a character cell which is 16 dots wide by 26 dots high per frame ...

Page 12

... OSD Graphics Characters. When a BOX display is used, the Extended Character set is in force; however Drop Shadow display is used, the Graphics Characters are in force. For Caption and Text display modes, if the Drop Shadow is set, the user must also command the Z86229 to switch back to Extended Characters. ZiLOG ...

Page 13

... ZiLOG Figure 4. Z86229 Standard Character Map and Font ...

Page 14

Figure 5. Caption Display ...

Page 15

ZiLOG Figure 6. Extended Characters Font ...

Page 16

... The form of the caption display depends on the caption mode indicated by the transmitted caption command, Pop-on, Paint-on, or Roll-up. The Z86229 can display a single caption having as many as eight rows. When any of the caption display modes are selected, the screen becomes transparent ...

Page 17

ZiLOG The XDSG mode is the GRAZE (channel grazing) display (Figure 7). The display contains three rows of information at the top of the screen that have been formatted for easy reading. They contain the following XDS packet informa- tion: ...

Page 18

< & waveform in the video field corresponding to the data channel selected for ...

Page 19

... OSD char- acter set. Serial Communications Interface Communications and control of the Z86229 is possible through a serial control interface. Two Serial Control Modes are available with the Z86229 performing as a slave device. These modes are two wire interface. ...

Page 20

... Note SPI Mode is selected by making the SMS pin SPI Mode. High. In SPI mode, the Z86229 acts as a slave device. All communications are clocked in and out as 8-bit bytes. SCK is the serial clock (input), SDA is Data-In, and SDO is Data- Out. The SEN pin enables communication when High. ...

Page 21

... Notes NTSC-interlaced mode, there are two fields, or horizon- tal pixel-display lines, exhibiting alternate refreshes to the display. 2. Language I refers to synchronous captioning, and lan- guage II refers to supplementary captioning. The Z86229 is initialized on RESET to the following default conditions:  Table 9. RESET Default Conditions ...

Page 22

... I C Bus Operation The serial control mode in use is selected by the state of the SMS pin. When SMS is set Low, the Z86229 is in the I mode. In this mode, the Z86229 also supports a bidirectional two wire bus and data transmission protocol. The bus is con- trolled by the master device, which generates the serial clock (SCK), controls the bus access, and generates the Start and Stop conditions ...

Page 23

... Z86229. Data is set up for a read operation either au- tomatically or manually. The XDS data reads are set up au- tomatically upon recovery by setting a valid XDS FILTER register selection ...

Page 24

... High as a stop condition which terminates all communications. All address and data words are serially transmitted Acknowledge. to and from the Z86229 in eight-bit words. The instance of a ninth bit generates an acknowledge. The device acknowledges the data by pulling the SDA bus Low during the ninth bit. A Not AC- Knowledge (NACK) is given by SDA=High during the ninth clock time ...

Page 25

... The command and data bytes are written MSB first. Typi- cally, the first byte of a two-byte command is sent first. The bits are clocked into the Z86229 by placing the data on the SDA input and bringing the SCK High. Reading Data Using the SPI Bus ...

Page 26

... COMMANDS Serial Port Commands The majority of the Z86229 commands are common to both 2 2 the I C and SPI modes. In the I C mode, the commands must be contained within the specified sequence (Start—Slave Address—etc.). In the following Command descriptions, the letter “h” fol- ...

Page 27

... Read Selects. (RDS1 and RDS2) in the Z86229. Each command is one byte in size and indicates that a read should take place. RDS1 specifies that one byte is read from the Z86229; like- wise, RDS2 indicates that two bytes are read. RDS1 is a one-byte command used to RDS1 = 40h– ...

Page 28

... The WRITE commands require two bytes to execute. The first byte is the write command. This byte includes the Z86229 register address (AD00:04). The second byte is the data to be written. OSD Display Mode Commands OSD commands are one and two-byte commands. They are ...

Page 29

... ZiLOG The two-byte commands (GRAPHICS and EXTENDED) above can be used to switch from the Graphics Characters to the Extended Characters and vice versa. Figure 17. Z86229 Graphics or Extended Character Set An OSD screen can only use one set at a time. Note: ...

Page 30

... INTERNAL REGISTERS Information controlling the setup and operation of the Z86229 are maintained in several registers. The user may read or alter the contents of these registers as required. Serial Status (SS) Register Address = Not Required D D Bit RDY DAV RD2 WOVR INTR ...

Page 31

ZiLOG OSD and XDS display modes always have Enhanced At- Note: tributes enabled. This bit selects the Drop Shadow or Full Box D –ODRP. 6 mode in the OSD and XDS displays (High = DROP SHAD- OW and Low = ...

Page 32

This bit selects Public Service Class packets for D –PUBL. 4 output through the ...

Page 33

... R R Caution: Some examples of the WRITE commands used to set the XDS Filter Register in the Z86229 are indicated in Table 18. The XDS Filter Register bit assignments are defined in the Z86229 Internal Register section of this specification (see page 30 for details). When XDS data recovery is enabled, the external con- troller should never perform any other read operation, except for SS reads in the beginning of field 2 ...

Page 34

... XDS Filter Register (05h) with its required XDS Class and Type information. For ex- ample in Z86229, in order to extract ONLY the Line 21 Pro- gram Rating information, the master must write the value 61h to the XDS Filter Register. The master should then poll the state of the DAV bit in the SSR until DAV = 1 ...

Page 35

... ZiLOG Z86229 COMMANDS AND REGISTER SUMMARY Table 19. Z86229 Summary of Control Commands   ...

Page 36

... Table 20. Z86229 OSD Display Mode Commands rr rr Table 21. Summary of Z86229 Internal Registers    ZiLOG ...

Page 37

... ZiLOG ON-SCREEN DISPLAY OSD Operation The Z86229 has a fully programmable, general purpose On- Screen Display (OSD) built in. The user can supply infor- mation for display through the serial port. In addition to all the normal and extended features of the VBI data display modes, the OSD mode also has available added graphics ...

Page 38

Figure 28. OSD Character Set ZiLOG ...

Page 39

ZiLOG Using POPSET POPSET provides an OSD mode that operates in a fashion similar to the Caption Pop-on mode. The POPSET com- mand organizes the memory into two eight row blocks, one visible on-screen and the other off-screen. An OSD ...

Page 40

The line, Select: ENTER EXIT: MENU, appears in row 12, starting in character column 2. These ...

Page 41

ZiLOG this point all 4 ...

Page 42

... In this case, the WAIT is placed just before the most recent FLIP command. This condition allows the entire command sequence to be sent to the Z86229 at one time. Because the RDY bit is set by the WAIT command, this condition also allows the FLIP to be input as well. ...

Page 43

ZiLOG The next group of commands use Graphic Char patterns to make the two row word HELLO. The data byte of the WRITE CHAR command is the address location for the graphic cell required as illustrated in Figure 5. Manual ...

Page 44

... POPSET OSD mode. The procedure for manual row control is as follows: 1. Use the POPSET command to select the OSD pop-up mode. This command prepares the Z86229 for OSD input, clears the row maps, and erases character memory. 2. Select a physical row (0 through 15) using the PHY ROW SEL command ...

Page 45

... C slave device. The PC The commands that control most of the display capability of the Z86229 are all one-byte commands which can be en- tered using the IICO program. These commands are tabu- lated below for convenience. General Commands Caption/Text Display Mode Commands ...

Page 46

... Timer has no affect on the current display mode in operation. SCRIPTI Program This program is designed to send any number of one or two- byte commands to the Z86229. The list of commands to be executed are contained in Script files that have the extension . Examples of such files are presented in the following ...

Page 47

... XDS Filter Register Script Files Using Interrupts Interrupts involve the use of the Line 21 Activity Register, the Interrupt Request Register, and the Interrupt Mask Reg- ister. The Z86229 must be configured for VLK internal so that the V signal (Pin 13 output providing the in- IN terrupt output signal ...

Page 48

... Script Program This program is designed to send any number of one or two- byte commands to the Z86229. The list of commands to be executed are contained in Script files that have the extension .SER. The Script files used with the I can be used with this program. ...

Page 49

... EMI and noise in the video frequency range is kept to an absolute minimum by running the ground plane underneath the entire Z86229 package length. This design is recommended for both SOIC and DIP package styles. Though it is not shown in the following application information, the SMS (pin 6) must be grounded for I plication ...

Page 50

PACKAGING INFORMATION Figure 31. 18-Lead DIP Package Diagram Figure 32. 18-Lead SOIC Package Diagram ZiLOG ...

Page 51

... ORDERING INFORMATION % 1 & Package Temperature Speed Environmental Example: Z 86229 Z86229, 12 MHz, DIP, 0º 70ºC, Plastic Standard Flow Environmental Flow Temperature Package Speed Product Number ZiLOG Prefix For fast results, contact your local ZiLOG sales office for assistance in ordering the part required. ...

Page 52

Pre-Characterization Product The product represented by this document is newly introduced and ZiLOG has not completed the full characterization of the product. The document states what ZiLOG knows about this product at this time, but additional features or nonconformance with ...

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