參數(shù)資料
型號(hào)： MT312
廠商： ZARLINK SEMICONDUCTOR INC
元件分類： 消費(fèi)家電
英文描述： Satellite Channel Decoder
中文描述： SPECIALTY CONSUMER CIRCUIT, PQFP80
封裝： MQFP-80
文件頁數(shù)： 76/90頁
文件大?。?/td> 318K
代理商： MT312
MT312
Microprocessor Control
76
11.5 Examples of 2-Wire Bus Messages
KEY:
S
P
A
Start condition
Stop condition
Acknowledge
MT312 output
W
R
NA
RADD
Write (= 0)
Read (= 1)
NOT Acknowledge
Register Address
ITALICS
Write operation - as a slave receiver:
Read operation - MT312 as a slave transmitter:
Write/read operation with repeated start - MT312 as a slave transmitter:
Write / read / write operation with repeated start and auto increment off with IAI set high - MT312 as a slave
transmitter. This example uses the GPP CTRL register where the register address is 20 + 128 (IAI). Data is
fi
rst
read from the GPP CTRL register, then following a restart, data is written to the GPP CTRL register.
To program the Tuner, use the following sequence of three messages:
Open secondary 2-wire port:
Program Tuner:
Close secondary 2-wire port:
Always close the secondary 2-wire port after programming the Tuner, to avoid 2-wire bus clock interference in
the Tuner.
S
DEVICE
ADDRESS
W
A
RADD
(n)
A
DATA
(reg n)
A
DATA
(reg n+1)
A
P
S
DEVICE
ADDRESS
R
A
DATA
(reg 0)
A
DATA
(reg 1)
A
DATA
(reg 2)
NA
P
S
DEVICE
ADDRESS
W
A
RADD
(n)
A
S
DEVICE
ADDRESS
R
A
DATA
(reg n)
A
DATA
(reg n+1)
NA
P
S
DEVICE
ADDRESS
W
A
RADD
(148)
A
S
DEVICE
ADDRESS
R
A
DATA
(reg 20)
NA S
DEVICE
ADDRESS
W
A
DATA
(reg 20)
A
P
S
MT312
ADDRESS
W
A
GPP CTRL
(20)
A
DATA
(64)
A
P
S
TUNER
ADDRESS
W
A
DATA
(BYTE 2)
A
DATA
(BYTE 3)
A
DATA
(BYTE 4)
A
DATA
(BYTE 5)
A
P
S
MT312
ADDRESS
W
A
GPP CTRL
(20)
A
DATA
(0)
A
P
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