SDA5649 Datasheet, PDF (23/26 Pages) Siemens Semiconductor Group – Expanded Decoder for Program Delivery Control and Video Program System EPDC / VPS Decoder

SDA 5649
SDA 5649X
BDSP 8/30 Format 1 Bit Allocation
Byte No. Bit No.
01234567
Contents
13
Network Identification 1. Byte
14
Network Identification 2. Byte
15
Weight
Weight
Sign
Time Offset Code
2 ^{– 2} 2 ^{– 1} 2 ⁰ 2¹ 2² 2³ 0
1
16
MJD Digit
Weight 10⁴
1111
Modified Julian Date (MJD)
1. Byte
17
MJD Digit
Weight 10²
MJD Digit
Weight 10³
Modified Julian Date
2. Byte
18
MJD Digit
Weight 10⁰
MJD Digit
Weight 10¹
Modified Julian Date (MJD)
3. Byte
19
UTC Hours
Units
UTC Hours
Tens
Universal Time Coordinated (UTC)
1. Byte
20
UTC Minutes
UTC Minutes
Units
Tens
Universal Time Coordinated
2. Byte
21
UTC Seconds
UTC Seconds
Units
Tens
Universal Time Coordinated
3. Byte
22
Short Program Label 1. Byte
23
Short Program Label 2. Byte
24
Short Program Label 3. Byte
25
Short Program Label 4. Byte
This corresponds to the coding adopted in CCIR teletext system B BDSP 8/30 format 1.
NB: The received bytes are output on the I²C-Bus in a transparent way, i.e., on a bit-first-in-first-out
basis. No bit manipulation is performed on the chip in this operating mode.
Concerning bytes no. 16 through 21: When evaluating the numbers, note that each 4-bit-digit has
been incremented by one prior to transmission, and the least significant bits are transmitted first.
Semiconductor Group
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