Z86130 ZILOG [Zilog, Inc.], Z86130 Datasheet - Page 33

• Manufacturer Part Number: Z86130
• Description: NTSC LINE 21 DECIDER
• Manufacturer: ZILOG [Zilog, Inc.]

Z86129 COMMANDS AND REGISTER SUMMARY
RESET
NOP
SSB
CPTX
DISP
RDS1
RDS2
READ1
READ2
WRxx
DS96TEL0200
Name
Cmd.
FBh,FCh,00h
00h
FFh,...Fh,FEh
10h-1Fh
20h-28h
40h-47h
60h-66h
F8h
F9h
C0h-DFh, XXh The WRITE commands require two bytes to execute. The first byte is the write command
Cmd. Code
RESET is a three-byte command sequence in SPI or I
will establish all the specified default settings in the device, but it will not reset the serial
port itself. This sequence can be entered without RDY being set.
NOP is a one-byte command for use in SPI or I
affect the status of the RDY bit in the Serial Status (SS) register and can be executed
independent of the RDY status.
Serial Sync Bytes are used in SPI mode only. This command actually consists of a string
of single-byte commands in the form FFh,....FFh,FEh. SPI mode communications can be
synchronized by sending a synchronizing data string to the part. This string should
consist of at least two SSB bytes of FFh followed by one SSB byte of FEh. At the end of
the FEh byte the port is ready for use
Selects a Closed Caption (CC1-CC4) or TEXT (T1-T4) data channel for processing or
display
Selects a preprogrammed XDS screen template for display, with or without 16 Second
Erase timer enabled
RDS1 is a one-byte command used to initiate a one byte read sequence by moving the
contents of the register identified by the address field (AD00:02) of the command to the
output register. Addresses 0h-7h are valid in the RDS1 command field AD00:02.
RDS2 is a one-byte command which is used to initiate a two-byte read sequence by
moving the contents of the two consecutive registers, starting with the one identified by
the address portion of the command (AD00:AD02), to the output registers and setting the
RD2 bit in the SS register. Only Addresses 0h-6h are valid in the RDS2 command field
AD00:02.
Command to read one byte in the SPI mode.
Command to read two bytes in the SPI mode.
and includes the Z86129 register address (AD00:04) being written. The second byte (XXh)
will be the data to be written.
Table 15. Z86129 Summary of Control Commands
P R E L I M I N A R Y
Function
2
C mode. The NOP command does not
2
C mode. The RESET command
NTSC Line 21 Decoder
Z86129/130/131
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