Analog Devices SHARC ADSP-214 Series Hardware Reference Manual page 272

Functional Description

Unlike older SHARC processors that have link ports, the
ADSP-2146x processors do not have an internal pull-down resis-
tor. Because of this there is no
internal pull-down and an external pull-down (20K Ohms) is requ-
ried on the
Figure 4-4,
link port.
LCLKx
driven by
transmitter
LACKx
driven by
receiver
LDAT7-0
driven by
transmitter
Figure 4-4. Enable Transmitter and Receiver at Different Times
4-8
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and signals.
LACKx LCLKx
Figure 4-5 and Figure 4-6
LCLKx held high until
LACKx goes high
BYTE 0
Transmit data held until
LACKx is asserted
ADSP-214xx SHARC Processor Hardware Reference
bit available to disable the
PDRDE
show various timings for the
LACKx may
deassert after
BYTE 0
BYTE 1
BYTE 2