SFSL5.5MDB YAMAR [Yamar Electronics Ltd.], SFSL5.5MDB Datasheet - Page 11

• Manufacturer Part Number: SFSL5.5MDB
• Description: Smart Slave for DC-BUS Powerline Network
• Manufacturer: YAMAR [Yamar Electronics Ltd.]

4.2.3
4.2.4
The SIG61 can be awakened by a remote SIG60 master, or SIG61 slave, device transmitting a wakeup
message over the bus. During Sleep Mode, the SIG61 wakes up periodically, every 32mSec, to sense
for bus activity. If a wakeup message is detected, the SIG61 device raises pin INH and lowers pin HDO.
If nSleep pin is low upon remote waking up, the local host (a device controlling the SIG61) which initially
pulled nSleep pin down, must raise the nSleep back high. Figure 4.7 provides the signal description.
HDO
A transition seen on the Wake pin (caused by an external source) is used to wake up the device. The
device then enters Standby mode, it rises pin INH, and transmits a wakeup message to the bus. While
transmitting the wakeup message, the device lowers pin HDO. After the transmission is completed the
device raises pin HDO. This is depicted in Figure 4.8. After the transmission is completed the device
enters Normal mode. If nSleep pin is low upon waking up, the local host which initially pulled nSleep pin
down, must raise the nSleep back to high.
INH
© 2010 Yamar Electronics Ltd.
DC-BUS
DC-BUS
Preliminary and proprietary Information of YAMAR Electronics Ltd. Subject to change without notice.
Wake
INH
HDO
T1 = 30uS-62uS
T2 = 92uS-124uS
Remote wake up process
Wakeup from Wake pin
msg. detected
T1
Figure 4.7 - Wakeup from bus message
Figure 4.8 - Wakeup from Wake pin
Wakeup Message
T2
11
Standby
Wakeup Message
Standby
DS-SIG61 R0.932
Normal mode
Normal
mode