AD1953
–7–
PIN FUNCTION DESCRIPTIONS
Input/
Pin No. Mnemonic Output Description
1 NC No Connect
2 MCLK2 IN Master Clock Input 2 256/512 f
S
3 MCLK1 IN Master Clock Input 1 256/512 f
S
4 MCLK0 IN Master Clock Input 0 256/512 f
S
5 AUXDATA IN Auxiliary Serial Data Input
6 MUTE IN Mute Signal, Initiates Volume Ramp-Down
7 DVDD Digital Supply for DSP Core, 4.5 V to 5.5 V
8 SDATA2 IN Serial Data Input 2
9 BCLK2 IN Bit Clock 2
10 LRCLK2 IN Left/Right Clock 2
11 SDATA1 IN Serial Data Input 1
12 BCLK1 IN Bit Clock 1
13 DGND Digital Ground
14 LRCLK1 IN Left/Right Clock 1
15 SDATA0 IN Serial Data Input 0
16 BCLK0 IN Bit Clock 0
17 LRCLK0 IN Left/Right Clock 0
18 CDATA IN SPI Data Input
19 CCLK IN SPI Data Bit Clock
20 CLATCH IN SPI Data Framing Signal
21 RESETB IN Reset Signal, Active Low
22 AVDD Analog 5 V Supply
23 AGND Analog GND
24 NC No Connect
25 VOUTS– OUT Negative Sub Analog DAC Output
26 VOUTS+ OUT Positive Sub Analog DAC Output
27 AGND Analog GND
28 VOUTR– OUT Negative Left Analog DAC Output
29 VOUTR+ OUT Positive Left Analog DAC Output
30 AVDD Analog 5 V Supply
31 AGND Analog GND
32 AVDD Analog 5 V Supply
33 VOUTL+ OUT Positive Left Analog DAC Output
34 VOUTL– OUT Negative Left Analog DAC Output
35 AGND Analog GND
36 NC No Connect
37 NC No Connect
38 VREF IN Connection for Filtered AVDD/2
39 FILTCAP IN Connection for Noise Reduction Capacitor
40 ZEROFLAG OUT Zero Flag Output. High when both left and right channels are 0 for 1024 frames.
41 DMUXO/TDMO OUT Dual-function Pin: Serial Data MUX Output/TDM Mode Output Data
42 BMUXO/TDMBC OUT Dual-function Pin: Bit Clock MUX Output/TDM Mode Bit Clock Output (256 f
S
)
43 LRMUXO/TDMFS OUT Dual-function Pin: Left/Right Clock MUX Output/TDM Mode Frame Sync
Clock Output
44 ODVDD Digital Supply Pin for Output Drivers, 2.5 V to 5.5 V
45 DCSOUT OUT Data Capture Serial Output for Data Capture Registers. Use in conjunction
with selected LRCLK and BCLK to form a 3-wire output.
46 COUT OUT SPI Data Output, Three-Stated when Inactive
47 MCLKOUT OUT Master Clock Output 512/256 f
S
(Frequency Selected by SPI Register)
48 DGND Digital Ground
REV. A
