SDA5649X Siemens, SDA5649X Datasheet - Page 7

• Manufacturer Part Number: SDA5649X
• Description: Expanded Decoder for Program Delivery Control and Video Program System EPDC / VPS Decoder
• Manufacturer: Siemens

Control Register
Bit Number
Default: All bits are set to 0 on power-up.
Bits 3 through 7 are used for test purposes and must not be changed for normal operation by user
software!
Bit 0:
0
BDSP
8/ 30/ 2
data accessible
Bit 1:
0
VPS mode active
Bit 2:
0
BDSP 8/30/1 data accessible
Read Mode
For reading from the PDC decoder, the following format has to be used.
The contents of up to 13 registers (bytes) can be read starting with byte 1 bit 7 (refer to the table
Order of Data Output on the I
Semiconductor Group
START Chipaddress Read Mode
Determines, which kind of data is accessed via the I
Determines the operating mode.
Determines whether BDSP 8/30/1-data or header row data is accessible.
T4
7
2
T3
C-Bus and …) depending on the selected operating mode.
6
AS
T2
5
1st Byte
Value
Value
Value
50
1
BDSP 8/ 30/ 1 or
header row
data accessible (refer to description of Bit 2)
1
PDC mode active
1
Bytes no.38 through 45 of the header row
containing clock time accessible
T1
4
AM
2
C-Bus when PDC mode is active.
T0
3
…
Last Byte
HDT
2
PDC/
VPS
NAM
1
SDA 5649X
SDA 5649
FOR1/
FOR2
STOP
0