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9XTend? ? OEM ? RF ? Module ?‐? Product ? Manual ? v2.x4x ? [2007.01.04]
Chapter ? 1 ?‐? 9XTend ? OEM ? RF ? Module
1.4. Electrical Characteristic
Figure ? 1 ‐ 02. System ? Block ? Diagram ?
Basic ? RF ? Link ? between ? Hosts
The data flow sequence is initiated when the first byte of data is received in the DI Buffer of the
transmitting module (XTend RF Module A). As long as XTend RF Module A is not already receiving
RF data, data in the DI Buffer is packetized then transmitted over-the-air to XTend RF Module B.
1.4.1. Timing Specifications
Figure ? 1 ‐ 03. Timing ? Specifications ? (‘A’ ? and ? ‘B’ ? refer ? to ? Figure ? 1 ‐ 02) ??
Table ? 1 ‐ 04.
AC ? Characteristics ? (Symbols ? correspond ? with ? Figure ? 1 ‐ 02 ? and ? Figure ? 1 ‐ 03, ? ATSY ? Parameter ? = ? 0)
Symbol
T TX
T TL
T RL
T CLDL
T CHDH
Description
Latency from the time data is
transmitted until it is received.
Time that TX_PWR pin (pin 4) is driven
low
Time that RX LED (pin 3)
is driven high
Time starting when CTS goes low until
the first bit appears on DOUT
Time after last bit of data until
CTS goes high
Sleep Mode
SM = 0
(No sleep)
SM = 8
SM = 7
SM = 6
SM = 5
SM = 4
--
--
--
--
115200 Baud Rate
9.4 msec
16 sec
8 sec
4 sec
2 sec
1 sec
2.45 msec
2.26 msec
44 μsec
7 μsec
9600 Baud Rate
94 msec
16 sec
8 sec
4 sec
2 sec
1 sec
29.6 msec
27.2 msec
75 μsec
7 μsec
? ? 2007 ? MaxStream, ? Inc.
????? 7
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