TDA935x Philips, TDA935x Datasheet - Page 65

• Manufacturer Part Number: TDA935x
• Description: TV Signal Processor-Teletext Decoder with Embedded u-Controller
• Manufacturer: Philips

Philips Semiconductors
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
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
organised as in the stand-alone TV signal processors. The
TV processor registers cannot be read, so when the
content of these registers is needed in the software, a copy
should be stored in Auxiliary RAM or Non Volatile RAM.
The slave address of the TV signal processor is given in
Fig.28.
2001 Jan 18
-Controller memory map and are written to these
TV signal processor-Teletext decoder with
embedded -Controller
2
C-bus control for the TV processor is
65
Valid subaddresses: 05H to 2EH, subaddress FE and FF
are reserved for test purposes. Auto-increment mode
available for subaddresses.
handbook, halfpage
TDA935X/6X/8X PS/N2 series
A6
1
Fig.28 Slave address (8A)
A5
0
A4
0
A3
0
Tentative Device Specification
A2
1
A1
0
A0
1
MLA743
R/W
1/0