Datasheet
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MODE CONTROL
PARALLEL HARDWARE CONTROL
3-WIRE (SPI) SERIAL CONTROL
PCM3060
SLAS533B – MARCH 2007 – REVISED MARCH 2008
The PCM3060 supports the following three types of mode control interface and four types of operation
configuration, according to the input state of MODE (pin 28) as follows. The pullup or pulldown resistor must be
220 k Ω ± 5%.
MODE MODE CONTROL INTERFACE
Tie to DGND 2-wire (I
2
C) serial control, selectable V
OUT
X configuration
Pulldown resistor to DGND 3-wire parallel control, differential V
OUT
X
Pullup resistor to V
DD
3-wire parallel control, single-ended V
OUT
X
Tie to V
DD
3-wire (SPI) serial control, selectable V
OUT
X configuration
The input state of the MODE pin is sampled during power-on reset or external reset; therefore, an input change
after reset is ignored until the next reset is performed.
The definitions (assignments) of the following three pins are changed by this control mode setting.
DEFINITION
PIN
SPI I
2
C H/W
2 MD SDA DEMP
1 MC SCL FMT
27 MS ADR IFMD
In serial mode control, the actual mode control is performed by register write (and read) through an SPI- or
I
2
C-compatible serial control port.
In parallel mode control, three specific functions are controlled directly through high/low settings of three specific
pins.
IFMD (Interface Mode) DESCRIPTION
LOW Slave mode for ADC, slave mode for DAC
HIGH Master (256 f
S
) mode for ADC, slave mode for DAC
The audio interface of the ADC and DAC can be independent from each other, but mode selection is applied on
both.
FMT (Interface Format) DESCRIPTION
LOW 24-bit I
2
S for ADC and DAC
HIGH 24-bit left-justified for ADC and DAC
The audio interface of the ADC and DAC can be independent from each other, but format selection is applied on
both.
DEMP (De-emphasis) DESCRIPTION
LOW De-emphasis off
HIGH De-emphasis on
(1)
(1) The 44.1-kHz de-emphasis filter is always selected.
The PCM3060 supports SPI-compatible serial ports, which operate asynchronously to the audio serial interface.
The control interface consists of MD, MC, and MS. MD is the serial data input, used to program the mode control
registers. MC is the serial bit clock, used to shift the data into the control port. MS is the select input, used to
enable the mode control port.
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Product Folder Link(s): PCM3060