SDA5642-6X Siemens, SDA5642-6X Datasheet - Page 14

• Manufacturer Part Number: SDA5642-6X
• Description: VPS-Decoder
• Manufacturer: Siemens

Semiconductor Group
2.4
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.
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
bus master doesn’t acknowledge in order to
generate the stop condition
at the beginning of the first field
at the beginning of the second field
14
2
C-Bus accesses when the
SDA 5642-6/X
02.97