SDA5650X Siemens, SDA5650X Datasheet - Page 25

• Manufacturer Part Number: SDA5650X
• Description: VPS / PDC-plus Decoder
• Manufacturer: Siemens

2.5
DAVN (Data Valid active low)
EHB
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
Description of DAVN and EHB Outputs
(First Field active high)
VPS Mode
in line 16 when
valid VPS data is
received
at the start of
line 16
on power-up or during I
doesn’t acknowledge in order to generate the stop condition
at the beginning of the first field
at the beginning of the second field
8/30/2 Mode
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
25
2
C-Bus accesses when the bus master
8/30/1 Mode
in the line
carrying
valid
8/30/1 data
PDC Mode
Header Time
in the line
carrying
valid
header
row X/0 data
SDA 5650/X
02.97