tc94a04afdg TOSHIBA Semiconductor CORPORATION, tc94a04afdg Datasheet - Page 27

• Manufacturer Part Number: tc94a04afdg
• Description: 1 Chip Audio Digital Processor
• Manufacturer: TOSHIBA Semiconductor CORPORATION

4. Self-Boot Function Description
4.1
RST
Self-Boot Function
modes to be set later. The microcontroller interface circuit supports two format: I
mode. However, the boot must be executed in Standard Transmission.
The TC94A04AFG/AFDG 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
All the command inputs from the exterior are disregarded during a boot term.
(512 word × 18 bit)
Self-boot Circuit
SBROM
Figure 1 Self-Boot System
generat
Timing
or
BTMODE
BTIFCK
BTCSN
BTIFDI
27
Microcontroller Interface Circuit
Internal
1
IFDI
0
Internal
1
IFCK
0
Internal
1
CSN
0
TC94A04AFG/AFDG
Internal
I2CS
2
C and the original
IFCK
IFDI
I2CS
2005-09-28
CS