SDA5648X SIEMENS [Siemens Semiconductor Group], SDA5648X Datasheet - Page 11

• Manufacturer Part Number: SDA5648X
• Description: Decoder for Program Delivery Control and Video Program System PDC / VPS Decoder
• Manufacturer: SIEMENS [Siemens Semiconductor Group]

Description of DAVN and EHB Outputs
DAVN (Data Valid active low)
EHB (First Field active high)
Signal Output
DAVN
H/L-transition
(set low)
L/H-transition
(set high)
always set high
EHB
L/H-transition
H/L-transition
In test mode (i.e. TI = high), both DAVN and EHB are controlled by the CS0 pin and reproduce the
state of the CS0 input.
Semiconductor Group
VPS Mode
in line 16 when
valid VPS data is
received
at the start of
line 16
on power-up or
during I
acknowledge in order to generate the stop condition
at the beginning of the first field
at the beginning of the second field
2
C-Bus accesses when the bus master doesn’t
31
8/30/2
in the line
carrying
valid
8/30/2 data
at the beginning of the next field
i.e.,at the start of the next data entry window
PDC Mode
8/30/1
in the line
carrying
valid
8/30/1 data
SDA 5648X
SDA 5648