Elta LE100 Specifications Page 58

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PL 3120/PL 3150/ PL 3170 Power Line Smart Transceiver Data Book 51
OUTPUT PIN
UPDATED
END OF
io_out()
START OF
io_out()
t
ret
t
fout
TIME
OUTPUT
Symbol Description Typ @ 10MHz
t
fout
Function to update
IO0
IO1
IO2
IO3
IO4
78 µs
89.8 µs
101.5 µs
113.3 µs
125 µs
t
ret
Return from function
IO0 – IO4
5 µs
Figure 3.14 Nibble Output Latency Values
Parallel I/O Objects
Muxbus Input/Output
This I/O object provides a means of performing parallel I/O data transfers between the PL Smart Transceiver and an
attached peripheral device or processor (see Figure 3.15). Unlike the parallel input/output object, which makes use of a
token-passing scheme for ensuring synchronization, the muxbus input/output enables the PL Smart Transceiver to
essentially be in control of all read and write operations at all times. This relieves the burden of protocol handling from
the attached device and results in an easier-to-use interface at the expense of data throughput capacity. The data bus
remains in the last state used.
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