Sharp HR-MB3 Service Manual page 35

IC301 VHITLV320D+-1:Audio DAC (TLV320D)
Pin No. Terminal Name
1 BVDD
2* CLKOUT
3 BCLK
4 DIN
5 LRCIN
6 N.C.
7 N.C.
8 HPVDD
9 LHPOUT
10 RHPOUT
11 HPGND
12* LOUT
13* ROUT
14 AVDD
15 AGND
16 VMID
17* N.C.
18* N.C.
19* RLINEIN
20* LLINEIN
21 CS
22 MODE
23 SDIN
24 SCLK
25 XTI/MCLK
26* XTO
27 DVDD
28 DGND
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
Input/Output
Input Buffer supply input. Voltage range is from 2.7 V to 3.6 V.
Output Clock output. this is a buffered version of the XTI input and is available in 1X or 1/2X fre-
quencies of XTI. Frequency selection is controlled by X in control register XX.
Input/Output I2S serial-bit clock. In audio master mode, the DAC23 generates this signal and sends it to
the DSP. IN audio slave mode, the signal is generated by the DSP.
Input I2S format serial data input to the sigma-delta stereo DAC.
Input/Output I2S DAC-word clock signal. In audio master mode, the DAC23 generates this framing signal
and sends it to the DSP. In audio slave mode, the signal generated by the DSP.
— Not used.
— Not used.
Input Analog headphone amplifier supply input. Voltage level is 3.3 V nominal.
Output Left stereo mixer-channel amplifier headphone output. Nominal 0 dB output level is 1.0 V
RMS. Gain of -73 dB to 6 dB is provided in 1 dB steps.
Output Right stereo mixer-channel amplifier headphone output. Nominal 0 dB output level is 1.0 V
RMS. Gain of -73 dB to 6 dB is provided in 1 dB steps.
— Analog headphone amplifier supply retum.
Output Left stereo mixer-channel line output. nominal output level is 1.0 V RMS.
Output Right stereo mixer-channel line output. nominal output level is 1.0 V RMS.
Input Analog supply input. Voltage level is 3.3 V nominal.
— Analog supply retum.
Input Midrail voltage decoupling input. 10 uF and 0.1 uF capacitors should be connected in paral-
lel to this terminal for filtering. Voltage level is 1/2 AVDD nominal.
— Not used.
— Not used.
Input Right stereo-line input channel.
Input Left stereo-line input channel.
Input Control port input latch/address select. For SPI control mode this input acts as the data latch
control. For 2-wire control mode this input defines the seventh bit in the device address field.
Input Serial interface mode input.
Input Control port serial data input. For both SP1 and 2-wiew control modes this is the serial clock
input and also is used to select the control protocol after reset.
Input Control port serial data clock. For both SP1 and 2-wiew control modes this is the serial clock
input.
Input Crystal or external clock input. Used for derivation of all internal clocks on the DAC23.
Output Crystal output. Connect to external cryatal for applications where the DAC23 is audio timing
master. Not used in applications where external clock source is used.
Input Digital supply input. Voltage range is 1.4 V to 3.6 V.
— Digital supply retum.
8 – 6
Function
HR-MB3