
Preliminary W6630CR
- 4 -
4.3. Digital Interface, continued
PIN NAME
MODE
PIN NO.
14
I/O
I
FUNCTION
This pin is the mode selection input pin for the hardware and
software mode. For the hardware mode, this pin must be logic
zero input and the SSP_EN pin become the mute input; the
SSPCLK pin and SSPDIN pin become the digital de-emphasis
control input pin. For the software mode, this pin must be logic
one input, and the SSP_EN, SSPCLK, SSPDIN become the
serial setup control input pin to select 4 x 9 bit registers.
This pin is the enable signal for serial setup port(SSP) in the
software mode. If the hardware mode is selected, the pin
becomes the DAC mute input pin when it is the logic zero, the
device is in the mute state; otherwise, it is in the normal
operation.
This pin is the clock input for serial setup port (SSP) in the
software mode. If the hardware mode is selected, this pin and
SSPDIN/DE0 (pin 16) control the selection from the different
digital de-emphasis filter.
This pin is the serial data input for serial setup port(SSP) in the
software mode. If the hardware mode is selected, this pin and
SSPCLK/DE1(pin 17) control the selection from the different
digital de-emphasis filter. It is reserved for the output pin when
it enters the test mode.
SSP_EN/MUTE
18
I
SSPCLK/DE1
17
I
SSPDIN/DE0
16
I/O
5. BLOCK DIAGRAM
Delta-Sigma DAC-Filter
Serial
Data
Port
(SDP)
Serial
Setup
Port
(SSP)
&
Control
Registers
Sequence and
Control System
FSLR
SSP_EN/MUTE
DINLR
Data
Conversion
H/W or
S/W Mode
Function
Control
8X Digital
Interpolation
Filter
64X
Oversampling
Multi-Bit
Delta-Sigma
Modulator
L_DAC
R_DAC
LPF &
Output
Amplifier
LPF &
Output
Amplifier
Zero Detector
BCLK
SSPCLK/DE1
SSPDIN/DE0
MODE
Power Supply
Management System
VOL
VAGL
VOR
VAGR
ZERO
DVDD
DGND
AVDD
AGND
/RESET
XTALI XTALO CLKO
Figure 5. Winbond Stereo 16 or 18 Bit Audio DAC Block Diagram