ml7084-001 Oki Semiconductor, ml7084-001 Datasheet - Page 137

• 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 (Multiple Words)
When writing to contiguous address spaces in an internal data memory, multiple words (2N words) can be written
consecutively without setting addresses individually, as described below.
1) Setting the Start Address
2) Writing Data
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
Set the starting address according to the write method (1 word) shown in Figure 34.
Set the address of the internal data memory for setting the start address for writing multiple words in CR6–CR7,
and set the start address of the internal data memory to which multiple words will actually be written
(START_ADDRESS) in CR8–CR9.
Next, by setting the internal data memory 1-word write control register (XDMWR) to “1”, START_ADDRESS
will be written to the internal data memory. Note that XDMWR will automatically be cleared to “0” upon
completion of a write operation.
After the writing of START_ADDRESS finishes, data can be written in succession for every two words without
setting addresses individually, according to the procedure below.
By setting the internal data memory 2-word write control register (XDMWR_2) to “1” after setting write data
(first word) in CR6–CR7 and write data (second word) in CR8–CR9, the first word data is written to
START_ADDRESS + 0 and the second word data to START_ADDRESS + 1, and after write operations finish,
XDMWR_2 is automatically cleared to “0”.
Thereafter, repeat the writing of data for every two words according to the procedure described in “2) Writing
Data” until a write of 2N words finishes. (The write destination address will automatically be updated.)
Figure 35 shows the method of writing (multiple words) to an internal data memory.
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