datasheetbank_Logo
Integrated circuits, Transistor, Semiconductors Search and Datasheet PDF Download Site

STA013 View Datasheet(PDF) - STMicroelectronics

Part Name
Description
View to exact match
STA013
ST-Microelectronics
STMicroelectronics ST-Microelectronics
STA013 Datasheet PDF : 38 Pages
1 2 3 4 5 6 7 8 9 10 Next Last
Figure 5. MPEG Decoder Interfaces.
STA013 - STA013B - STA013T
DATA
SOURCE
DATA_REQ
SDI
SCKR
BIT_EN
ยตP
XTI XTO FILT
IIC
SCL
SDA
PLL
IIC
MPEG
DECODER
SERIAL AUDIO INTERFACE
RX
TX
SDO
SCKT
LRCKT
DAC
D98AU912
Figure 6. Serial Input Interface Clocks
SDI
OCLK
DATA IGNORED
SCKR
SCLK_POL=0
SCKR
SCLK_POL=4
BIT_EN
DATA VALID
D98AU968A
DATA IGNORED
2.2 - Serial Input Interface
STA013 receives the input data (MSB first)
thought the Serial Input Interface (Fig.5). It is a
serial communication interface connected to the
SDI (Serial Data Input) and SCKR (Receiver Se-
rial Clock).
The interface can be configured to receive data
sampled on both rising and falling edge of the
SCKR clock.
The BIT_EN pin, when set to low, forces the bit-
stream input interface to ignore the incoming
data. For proper operation Bit-EN line shold be
toggled only when SCR is stable low (for both
SCLK_POL configuration) The possible configu-
rations are described in Fig. 6.
2.3 - PLL & Clock Generator System
When STA013 receives the input clock, as de-
scribed in Section 2.1, and a valid layer III input
bit stream, the internal PLL locks, providing to the
DSP Core the master clock (DCLK), and to the
Audio Output Interface the nominal frequencies of
the incoming compressed bit stream. The STA013
PLL block diagram is described in Figure 7.
The audio sample rates are obtained dividing the
oversampling clock (OCLK) by software program-
mable factors. The operation is done by STA013
embedded software and it is transparent to the
user.
The STA013 PLL can drive directly most of the
commercial DACs families, providing an over
sampling clock, OCLK, obtained dividing the VCO
frequency with a software programmable dividers.
7/38
 

Share Link: 

datasheetbank.com [ Privacy Policy ] [ Request Datasheet ] [ Contact Us ]