Datasheet
PCM1680
www.ti.com
.................................................................................................................................................. SLES133B – MARCH 2005 – REVISED OCTOBER 2008
TERMINAL FUNCTIONS
TERMINAL
I/O DESCRIPTION
NAME NO.
AGND1 18 – Analog ground
AGND2 24 – Analog ground
BCK 7 I Shift clock input for serial audio data
(1)
DATA1 6 I Serial audio data input for V
OUT
1 and V
OUT
2
(1)
DATA2 11 I Serial audio data input for V
OUT
3 and V
OUT
4
(1)
DATA3 12 I Serial audio data input for V
OUT
5 and V
OUT
6
(1)
DATA4 13 I Serial audio data input for V
OUT
7 and V
OUT
8
(1)
DGND 10 – Digital ground
LRCK 8 I Left and right clock input. The frequency of this clock is equal to the sampling rate, f
S
.
(1)
MC/SCL 3 I Shift clock input for SPI, serial clock input for I
2
C
(1) (2)
MD/SDA 4 I/O Serial data input for SPI, serial data input/output for I
2
C
(1) (2) (3)
MS/ADR 2 I Select input for SPI, address input for I
2
C
(1) (4)
MSEL 14 I I
2
C/ SPI select
(1) (4)
SCK 5 I System clock input. Input frequency is 128, 192, 256, 384, 512, 768, or 1152 f
S
.
(1)
V
CC
1 17 – Analog power supply, 5 V
V
CC
2 23 – Analog power supply, 5 V
V
COM
25 – Common voltage output. This pin should be bypassed with a 10- µ F capacitor to AGND.
V
DD
9 – Digital power supply, 5 V
V
OUT
1 27 O Voltage output for audio signal corresponding to L-ch on DATA1
V
OUT
2 26 O Voltage output for audio signal corresponding to R-ch on DATA1
V
OUT
3 22 O Voltage output for audio signal corresponding to L-ch on DATA2
V
OUT
4 21 O Voltage output for audio signal corresponding to R-ch on DATA2
V
OUT
5 20 O Voltage output for audio signal corresponding to L-ch on DATA3
V
OUT
6 19 O Voltage output for audio signal corresponding to R-ch on DATA3
V
OUT
7 16 O Voltage output for audio signal corresponding to L-ch on DATA4
V
OUT
8 15 O Voltage output for audio signal corresponding to R-ch on DATA4
ZERO1 1 O Zero-flag output 1
ZERO2 28 O Zero-flag output 2
(1) Schmitt-trigger input.
(2) Pull-down in SPI mode.
(3) Open-drain output in I
2
C mode.
(4) Pull-down.
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