tc94a48fg TOSHIBA Semiconductor CORPORATION, tc94a48fg Datasheet - Page 24

• Manufacturer Part Number: tc94a48fg
• Description: Single-chip Audio Digital Signal Processor Single-chip Audio Digital Signal Processor
• Manufacturer: TOSHIBA Semiconductor CORPORATION

3. Write and Read Commands
(4)
The specifications of write and read commands depend on the built-in program. For details, refer to the
program explanation data sheet.
A soft reset is required before the system can start a program after program boot or restart a
program.
A 24-bit command with its soft reset bit set to "1" triggers a soft reset and a command with the bit
cleared terminates a soft reset.
When trigging or terminating a soft reset, transmit a stop condition after transferring the 24-bit
command because no data needs to follow the command.
Figure 17 shows the procedure for triggering or terminating a soft reset.
Triggering and terminating a soft reset
Figure 17 Procedure for Triggering or Terminating a Soft Reset
Transfer I2C Ａｄｄｒｅｓｓ（３０ｈ）
(soft reset ON/OFF = 0000x0h)
Soft reset triggered or terminated
Transfer 24-bit command
Check ACK bit = “L”
ＳＴＡＲＴ Ｃｏｎｄｉｔｉｏｎ
ＳＴＯＰ Ｃｏｎｄｉｔｉｏｎ
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“1” triggers a reset
“0” terminates a reset
If a system crash(malfunction)
occurs, perform a hard reset
If ACK = “H” , restart from
prior to a soft reset.
START Condition.
TC94A48FG
2005-09-28