參數資料
型號: TPU3035PK
元件分類: 圖文
英文描述: TELETEXT DECODER, PDIP40
封裝: PLASTIC, DIP-40
文件頁數: 22/72頁
文件大小: 347K
代理商: TPU3035PK
TPU 3035, TPU 3040, TPU 3050
PRELIMINARY DATA SHEET
29
Micronas
4.2.1.4. Data Subaddressing
Writing data to TPU 3040 memory is possible by subad-
dressing the data register directly. The data is then writ-
ten into memory addressed by the foregoing telegram.
< 22 7C dd .. >
Reading data from TPU 3040 is done by subaddressing
the data register followed by a repeated start condition
and slave read address (see Fig. 4–3). The returned
data depend on the subaddress selected in the preced-
ing TPU telegram.
< 22 7C <
23 dd .. >
W
WP
P
W
n byte Data
Status
Wn–1 byte Data
S
Ack
P
Ack
0111 1000
0111 1100
0111 1101
0111 1100
R
S
Ack
W
S
Ack
P
Ack
0111 1001
W
S
Ack
P
Ack
0111 1010
W
S
Ack
P
Ack
0111 1011
0010001
SDA
SCL
1
0
SP
P
last byte Data
Ack
n byte Sub 4
Ack
n byte Sub 3
Ack
n byte Sub 2
Ack
n byte Sub 1
Ack
Status
W=
0
R=
1
Ack =
0
Nak =
1
S
=
Start
P
=
Stop
=
Interrupt
=
Data from TPU
Ack
Nak
Fig. 4–3: I2C-bus Protocol
0010001
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