STA014B STMICROELECTRONICS [STMicroelectronics], STA014B Datasheet - Page 12

• Manufacturer Part Number: STA014B
• Description: MPEG 2.5 LAYER III AUDIO DECODER WITH ADPCM AND SRS WOWO POSTPROCESSING CAPABILITY
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

STA014-STA014B-STA014T
The following 4 figures (fig. 12, 13, 14, 15) show
the available connection diagrams as far as
ADPCM encoding function. As shown in the fig-
ures some configuration is not available in SO28
package.
Figure 12. Input from BITSTREAM, Output from
Figure 14. Input from BITSTREAM, Output from
5 - I
The STA014 supports the I
tocol defines any device that sends data on to the
bus as a transmitter and any device that reads
the data as a receiver. The device that controls
the data transfer is known as the master and the
others as the slave. The master always starts the
transfer and provides the serial clock for synchro-
nisation. The STA014 is always a slave device in
all its communications.
12/45
MCU
2
MCU
C BUS SPECIFICATION
DATA_REQ
GPSO_SCKR
GPSO_DATA
GPSO_REQ
DATA_REQ
BIT_EN
SCKR
BIT_EN
SDI
I
SCKR
I2C
GPSO
2
SDI
I
C
2
STA013 compatible mode
C
LFBGA64
LFBGA64
TQFP44
TQFP44
SO28
2
C protocol. This pro-
D99AU1122A
D99AU1121A
LRCKT
OCLK
SCKT
LRCKT
SDO
SCKT
OCLK
SDO
DAC
DAC
Figure 13. Input from ADC, Output from I2C +
Figure 15. Input from ADC, Output from GPSO
5. 1 - COMMUNICATION PROTOCOL
5.1.0 - Data transition or change
Data changes on the SDA line must only occur
when the SCL clock is low. SDA transition while
the clock is high are used to identify START or
STOP condition.
5.1.1 - Start condition
START is identified by a high to low transition of
the data bus SDA signal while the clock signal
SCL is stable in the high state.
A START condition must precede any command
for data transfer.
MASTER
MASTER
SLAVE
MCU
ADC
MCU
MCU
ADC
ADC
DATA_REQ
GPSO_SCKR
GPSO_DATA
GPSO_REQ
LRCK_ADC
SCK_ADC
SDI_ADC
DATA_REQ
LRCK_ADC
I
SCK_ADC
2
SDI_ADC
IRQ
C
I
2
SDI_ADC
C
LFBGA64
TQFP44
LFBGA64
LFBGA64
TQFP44
TQFP44
LRCKT
SCKT
SO28
SO28
LRCKT
LRCKT
SCKT
OCLK
OCLK
SCKT
OCLK
SDO
SDO
SDO
D99AU1123A
D99AU1124A
DAC
DAC
DAC