參數(shù)資料
型號(hào)： TC94A04AFD
廠商： Toshiba Corporation
英文描述： 1 CHIP AUDIO DIGITAL PROCESSOR
中文描述： 1芯片音頻數(shù)字處理器
文件頁(yè)數(shù)： 27/42頁(yè)
文件大?。?/td> 565K
代理商： TC94A04AFD
TC94A04AF/AFD
2001-11-15
27
4. Self-Boot Function Description
4.1
Self-Boot Function
The TC94A04AF/AFD supports a self-boot function for setting coefficients and offsets.
As Figure 1 shows, the data are set via the microcontroller interface circuit.
First saving the data to be set via the microcontroller in the self-boot ROM (SBROM) allows various
modes to be set later. The microcontroller interface circuit supports two format: I
2
C and the original
mode. However, the boot must be executed in Standard Transmission.
All the command inputs from the exterior are disregarded during a boot term.
SBROM
(512 word
×
18 bit)
Timing
generat
or
CS
IFCK
IFDI
Microcontroller Interface Circuit
BTIFCK
BTIFDI
BTMODE
Self-boot Circuit
I2CS
RST
Internal
IFDI
1
BTCSN
Internal
IFCK
Internal
CSN
0
1
1
0
0
Internal
I2CS
Figure 1 Self-Boot System
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