tc94a48fg TOSHIBA Semiconductor CORPORATION, tc94a48fg Datasheet - Page 17

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

(3)
（If MＩＡＣＫ＝“Ｈ” , wait until MIACK = “Ｌ”)
（If MＩＡＣＫ＝“Ｈ” , wait until MIACK = “Ｌ”)
Reading 24-bit data
When the host microcontroller reads data from 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 "1" and sets the number of
words to be read. Then, it transfers the 24-bit command, check that /MIACK = "L", and read a
required number of 24-bit data words.
The host microcontroller should check that /MIACK = "L" because it has to wait until the data to be
read is set in the data buffer.
Figure 8 shows the 24 bit data read procedure.
Transfer 24-bit command
(data read = xxxx1xh)
Check ＭＩＡＣＫ＝“Ｌ”
Check ＭＩＡＣＫ＝“Ｌ”
Read 24-bit data (1)
Read 24-bit data (2)
Read 24-bit data (n)
Data read finished
／ＭＩＣＳ＝“Ｈ”
／ＭＩＣＳ＝“Ｌ”
Figure 8 shows the 24-bit data read procedure.
17
Set 16 bit address and the number of
words to be transferred.
Can read up to eight 24-bit data word
TC94A48FG
2005-09-28