Figure 4-2. Switch to Silent Mode
Normal Mode
EN
TXD
NRES
VCC
Td = 3.2 µs
Mode select window
Silent Mode
Delay time silent mode
LIN
Td_sleep = maximum 20 µs
LIN switches directly to recessive mode
Figure 4-3. LIN Wake-up Waveform Diagram from Silent Mode
Pre-normal Mode
LIN Bus
Normal Mode
RXD
VCC
EN
High
Low
Bus wake-up filtering
time Tbus
Silent mode
Pre-normal mode
Node ln silent mode
Regulator Wake-up Time
Normal mode
EN High
NRES
If undervoltage switch to pre-normal mode
Undervoltage detection active
6 ATA6620
4850D–AUTO–02/06