ml7084-001 Oki Semiconductor, ml7084-001 Datasheet - Page 136

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

When data is set in the internal data memory during normal operaiton mode, since in that case the reading is done in
synchronization with the SYNC signal (8 kHz), maintain the state for 250 μs or more.
Write Method (1 Word)
By setting the internal data memory 1-word write control register (XDMWR) to “1” after setting an internal data
memory address and write data in CR6–CR9, the writing of internal data memory for one word will be completed.
XDMWR will automaticlly be cleared to “0” upon completion of a write operation. Figure 34 shows the method of
writing one word to an internal data memory.
To rewrite a multiple number of memories with distributed addresses, repeat the write operation described above.
After all writes are finished, a normal operation will start by setting the operation start control register (OPE_STAT)
to “1”.
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
Automatic processing inside the LSI
Figure 34 Internal Data Memory Write Method (1 Word)
CR6 (Internal memory; higher address )
CR7 (Internal memory; lower address)
CR8 (Internal memory; higher data)
CR9 (Internal memory; lower data)
XDMWR is cleared automatically.
External setting
Internal memory is updated.
Start of writing
CR1 = 00h?
XDMWR = 1
YES
NO
Time duration from setting ("1") of
XDMWR until it is cleared .
During initialization mode: 20 μs max.
During normal operation: 250 μs max.
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