ml7084-001 Oki Semiconductor, ml7084-001 Datasheet - Page 139

• Manufacturer Part Number: ml7084-001
• Description: 4ch Voip Codec
• Manufacturer: Oki Semiconductor

After setting the internal data memory address in CR6 and CR7, one word of data from the internal data memory is
Reading the internal data memory is only available for the internal data memories and the read only data memories
When an internal data memory is read during normal operaiton mode, since in that case the reading is done in
stored in CR8 and CR9 setting the internal data memory read control register (XDMRD) to “1”. After reading the
data, XDMRD will be cleared to “0” automatically. The method of reading the internal data memory is shown in
Figure 36.
within the related registers listed in Table 11.
synchronization with the SYNC signal (8 kHz), maintain the set address in the same state for 250 μs or more.
Read Method
The internal data memories are write enabled even in the normal operation mode. Also in such a case, use the same
method as described above.
Note:
OKI Semiconductor
External setting/reading
Read CR8 (Internal memory; higher data)
Read CR9 (Internal memory; lower data)
CR6 (Internal memory ; higher address )
CR7 (Internal memory ; lower address )
Figure 36 Internal Data Memory Read Method
Start of reading
XDMRD = 0?
CR1 = 00h?
XDMRD = 1
YES
YES
NO
NO
Will be cleared to "0" automatically after
data that has been read is stored in CR8
and CR9.
Time duration from setting ("1") of XDMRD
until it is cleared.
During initialization mode: 20 μs max.
During normal operation : 250 μs max.
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