APR6016 Просмотр технического описания (PDF) - APLUS INTEGRATED CIRCUITS
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APR6016 Datasheet PDF : 24 Pages
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INTEGRATED CIRCUITS INC.--APR6016
Reading the SID
Each device in the APRXX series family contains
an
embedded Silicon Identification (SID). The SID can
be read by the host processor to identify which
family/family member is being used. Reading the
device SID requires issuing two OpCode
commands; a SID command followed by any other
command,usually a NOP command. The device
will clock the SID data out on the DO pin as the
command that follows the SID command is
clocked in.
Figure 9 is a diagram that describes the process
necessary for reading SID information.
The SID information follows the format given in
Figure 10. The first bit shifted out DO is the
Overflow bit. The Overflow bit is set to a binary 1 if
an attempt was made to record beyond the
available memory. The Overflow bit is set to 0 if an
overflow has not occurred. This bit is cleared after it
has been read. The Dl bit is the End Of Data (EOD)
bit.
The EOD bit is set when the device stops playing or
fast-forwarding as a result of EOD bit in memory.
The EOD bit cleared after it has been read. The D2
bit is the Illegal Address bit. The Illegal Address Bit
is set whenever an illegal address is sent to the
device. The D3 bit is the LBAT bit. This bit is set
when the device senses a supply voltage below
specification. The following five bits represent the
product family. The APRXX product family code is
binary 01000 as shown in Figure 10. The next
four bits represent the device code. The APR6016
device code is binary 0010 as shown in Figure 10.
The last seven bits are random data and should
be ignored.
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