SSI Interface 8 - 7
Using Time Delay to Low Power Mode with SSI
Time Delay to Low Power Mode on page 6-15 provides bar codes to select a general time delay. To program a
more specific delay value, use an SSI command according to Table 8-2.
Table 8-2
Values for Selecting Time Delay to Low Power
Value Timeout Value Timeout Value Timeout Value Timeout
0x00 15 Mins 0x10 1 Sec 0x20 1 Min 0x30 1 Hour
0x01 30 Mins 0x11 1 Sec 0x21 1 Min 0x31 1 Hour
0x02 60 Mins 0x12 2 Secs 0x22 2 Mins 0x32 2 Hours
0x03 90 Mins 0x13 3 Secs 0x23 3 Mins 0x33 3 Hours
N/A N/A 0x14 4 Secs 0x24 4 Mins 0x34 4 Hours
N/A N/A 0x15 5 Secs 0x25 5 Mins 0x35 5 Hours
N/A N/A 0x16 6 Secs 0x26 6 Mins 0x36 6 Hours
N/A N/A 0x17 7 Secs 0x27 7 Mins 0x37 7 Hours
N/A N/A 0x18 8 Secs 0x28 8 Mins 0x38 8 Hours
N/A N/A 0x19 9 Secs 0x29 9 Mins 0x39 9 Hours
N/A N/A 0x1A 10 Secs 0x2A 10 Mins 0x3A 10 Hours
N/A N/A 0x1B 15 Secs 0x2B 15 Mins 0x3B 15 Hours
N/A N/A 0x1C 20 Secs 0x2C 20 Mins 0x3C 20 Hours
N/A N/A 0x1D 30 Secs 0x2D 30 Mins 0x3D 30 Hours
N/A N/A 0x1E 45 Secs 0x2E 45 Mins 0x3E 45 Hours
N/A N/A 0x1F 60 Secs 0x2F 60 Mins 0x3F 60 Hours
CAUTION With hardware handshaking disabled, the DS457 wakes from low power mode upon receiving a
character. However, the DS457 does not process this character or any others it receives during the 7
ms period following wakeup. Wait at least 7 ms after wakeup to send valid characters.
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