參數(shù)資料
型號: TDA938X
廠商: NXP Semiconductors N.V.
英文描述: TV signal processor-Teletext decoder with embedded m-Controller
中文描述: 電視信號處理器與嵌入式米圖文電視解碼器控制器
文件頁數(shù): 90/140頁
文件大?。?/td> 570K
代理商: TDA938X
1999 Sep 28
90
Philips Semiconductors
Preliminary Device Specification
TV signal processor-Teletext decoder with
embedded
μ
-Controller
TDA935X/6X/8X series
SOFTWARE CONTROL
The CPU communicates with the peripheral functions
using Special function Registers (SFRs) which are
addressed as RAM locations. The registers for the
Teletext decoder appear as normal SFRs in the
μ
-Controller memory map and are written to these
functions by using a serial bus. This bus is controlled by
dedicated hardware which uses a simple handshake
system for software synchronisation.
For compatibility reasons and possible re-use of software
blocks, the I
2
C-bus control for the TV processor is
organised as in the stand-alone TV signal processors. The
TV processor registers cannot be read, so when the
contentoftheseregistersisneededinthesoftware,acopy
should be stored in Auxiliary RAM or Non Volatile RAM.
The slave address of the TV signal processor is given in
Fig.41.
Valid subaddresses: 06H to 2DH, subaddress FE and FF
are reserved for test purposes. Auto-increment mode
available for subaddresses.
handbook, halfpage
MLA743
A5
A4
A3
A2
A1
A0
1
0
0
0
1
0
1
1/0
R/W
Fig.41 Slave address (8A).
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