z86230 ZiLOG Semiconductor, z86230 Datasheet - Page 23

• Manufacturer Part Number: z86230
• Description: Advanced Violence Blocking And Ntsc Line 21 Xds
• Manufacturer: ZiLOG Semiconductor

5.
5.1 S
5.1.1 RESET = FBh
5.1.2 NOP = 00h
5.2 READ
5.2.1 READ Bank Select (RBS = FDh)
5.2.2 READ SELECTs (RDS1 = 40h–
PS000400-TVC0499
COMMANDS
ERIAL
AND
P
ORT
WRITE C
C
OMMANDS
S
The commands must be contained within the Start–Slave Address–etc. sequence.
N
designates hexadecimal notation.
RESET
fied default settings in the device, but it does not reset the serial port itself. The
RESET
RESET
without the
NOP
RDY
the
T
All register diagrams indicated in this section incorporate the following conven-
tions, unless otherwise noted:
•
•
RDS1
second data byte select one of four banks of up to 33 bytes. A subsequent
READ
RDS1
is performed by moving the contents of the register identified by the address field
(AD00:04) of the command to the first location of
11h
Serial Command
RESET
NOP
ERIAL
ABLE
OTE
RDY
R = Read, W = Write, X = Indeterminate, and res = Reserved
All register bits marked as res must be set to Low(0)
are valid in the RDS1 command field AD00:04.
:
bit in the Serial Status Register (
is a 1-byte command. The
P
In the following Command descriptions, the letter h following a command code
is a 2-byte command to select the read data bank. The lower 2 bits of the
is a 1-byte command used to initiate a 1-byte
7. B
OMMANDS
deciphers data from the specified bank.
ORT
is a 1-byte command. The
command must be followed by a no operation (
stays active until deactivated by the
status.
ASIC
C
RDY
OMMANDS
51H
Z86230—PRELIMINARY
S
bit being set.
)
ERIAL
C
OMMANDS
NOP
RESET
command does not affect the status of the
SSR
Command Code
FBh
00h
command establishes all of the speci-
) and can be executed independent of
NOP
. This sequence can be entered
READ
READ
NOP
bank 0. Addresses
sequence. This activity
) command, because
C
OMMANDS
I
2
C
00h
23
–