TC94A48FG Datasheet, PDF (22/36 Pages) Toshiba Semiconductor – Single-chip Audio Digital Signal Processor

TC94A48FG
(2) Writing 24-bit data
When the host microcontroller writes data to the TC94A48FG during the execution of a program, it
sets a 16-bit address in a 24-bit command as well as sets its R/W bit to "0" and sets the number of
words to be written. Then, it transfers the 24-bit command, followed by a required number of 24-bit
data words.
An interval of at least 1fs(32μs@1fs=32kHz) is required before next started.
Figure 15 shows the 24 bit data write procedure.
ＳＴＡＲＴ　Ｃｏｎｄｉｔｉｏｎ
Transfer I2C　Ａｄｄｒｅｓｓ（３０ｈ）
Check ACK bit = “L”
Write 24-bit command
(data write = xxxx0xh)
If ACK = “H” , restart from
START condition.
Set 16-bit address and the number of
words to be transferred.
Write 24-bit data (1)
Write 24-bit data (2)
Can write up to eight 24-bit data words
Write 24-bit data (n)
ＳＴＯＰ　Ｃｏｎｄｉｔｉｏｎ
Data write finished
Figure 15 shows the 24-bit Data Write Procedure.
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2005-09-28