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參數(shù)資料
| 型號： | MTV004 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | On-Screen Display Shrink Version |
| 中文描述： | 屏幕顯示收縮版本 |
| 文件頁數(shù)： | 3/9頁 |
| 文件大小： | 88K |
| 代理商： | MTV004 |
MYSON
TECHNOLOGY
MTV004
MTV004 Revision 4.0 06/24/1999
3/9
3.0 FUNCTIONAL DESCRIPTIONS
3.1 Serial Data Interface
The serial data interface receives data transmitted from an external controller. There are 2 types of bus that
can be accessed through the serial data interface: SPI bus and I
2
C bus.
3.1.1 SPI Bus
While SSB pin is pulled to "high" or "low" level, the SPI bus operation is selected. A valid transmission should
be started by pulling SSB to "low" level, enabling MTV004 in receiving mode, and retaining "low" level until the
last cycle for a complete data packet transfer. The protocol is shown in Figure 2:
Figure 2. Data Transmission Protocol
There are 3 transmission formats as shown below:
Format (a) R - C - D
→
R - C - D
→
R - C - D ..........
Format (b) R - C - D
→
C - D
→
C - D
→
C - D .......
Format (c) R - C - D
→
D
→
D
→
D
→
D
→
D .........
R=row address, C=column address, D=display data
3.1.2 I
2
C Bus
The I
2
C bus operation is only selected when the SSB pin is left floating. A valid transmission should begin by
writing the slave address 7AH, which is the mask option, to MTV004. The protocol is shown in Figure 3:
SCK
SDA
fist byte
@ @ @ @ @
START
ACK
second byte
last byte
ACK
STOP
B7
B6
B0
B7
B0
Figure 3. Data Transmission Protocol (I
2
C)
There are 3 transmission formats as shown below:
Format (a) S - R - C - D
→
R - C - D
→
R - C - D ..........
Format (b) S - R - C - D
→
C - D
→
C - D
→
C - D .......
Format (c) S - R - C - D
→
D
→
D
→
D
→
D
→
D ........
S=slave address, R=row address, C=column address, D=display data
Each arbitrary length of data packet consists of 3 portions: row address (R), column address (C) and display
data (D). Format (a) is suitable for updating small amounts of data that will be allocated with different row and
column addresses. Format (b) is recommended for updating data that has the same row address but a different
column address. Format (c) should be used for massive data updating or a full-screen data change to increase
MS
B
LSB
SSB
SCK
SDA
first byte
last byte
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MTV012A | 8051 Embedded CRT Monitor Controller Mask Version |
| MTV012E | 8051 Embedded CRT Monitor Controller OTP Version |
| MTV018 | IC TXRX PHY 10/100 3.3V 48LQFP |
| MTV021 | Enhanced Super On-Screen Display |
| MTV021N20 | Enhanced Super On-Screen Display |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MTV012A | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8051 Embedded CRT Monitor Controller Mask Version |
| MTV012E | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8051 Embedded CRT Monitor Controller OTP Version |
| MTV016 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Enhanced On-Screen-Display Controller |
| MTV016N-10 | 制造商:Myson Century Inc 功能描述:IC, PDIP16 |
| MTV016N-18 | 制造商:Myson Century Inc 功能描述:IC, PDIP16 |
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