PCM2704C Datasheet, PDF (8/40 Pages) Texas Instruments – Stereo Audio DAC with USB Interface, Single-Ended Headphone Output and S/PDIF Output

PCM2704C, PCM2705C
PCM2706C, PCM2707C
SBFS036A – AUGUST 2011 – REVISED JULY 2012
www.ti.com
Table 2. Pin Descriptions: PJT Package (PCM2706C/PCM2707C)
TERMINAL
NAME
NO.
AGNDL
26
AGNDR
31
CK
14
D+
23
D–
22
DGND
20
DOUT
17
DT
15
FSEL
9
FUNC0
5
FUNC1
19
FUNC2
18
FUNC3
4
HID0/MS
6
HID1/MC
7
HID2/MD
8
HOST
3
PGND
1
PSEL
16
SSPND
11
TEST
10
V_BUS
24
V_CCL
27
V_CCP
2
V_CCR
30
V_COM
32
V_DD
21
V_OUTL
28
V_OUTR
29
XTI
12
XTO
13
ZGND
25
I/O
DESCRIPTION
— Analog ground for headphone amplifier of L-channel
— Analog ground for headphone amplifier of R-channel
O Clock output for external ROM (PCM2706C). Must be left open (PCM2707C).
I/O USB differential input/output plus⁽¹⁾
I/O USB differential input/output minus⁽¹⁾
— Digital ground
O S/PDIF output/I²S data output
I/O Data input/output for external ROM (PCM2706C). Must be left open with pull-up resistor (PCM2707C).⁽¹⁾
I Function select (low: I²S data output, high: S/PDIF output)⁽¹⁾
I/O HID key state input (next track), active high (FSEL = 1). I²S LR clock output (FSEL = 0).⁽²⁾
I/O HID key state input (previous track), active high (FSEL = 1). I²S bit clock output (FSEL = 0).⁽²⁾
I/O HID key state input (stop), active high (FSEL = 1). I²S system clock output (FSEL = 0).⁽²⁾
I HID key state input (play/pause), active high (FSEL = 1). I²S data input (FSEL = 0).⁽²⁾
I HID key state input (mute), active high (PCM2706C). MS input (PCM2707C).⁽²⁾
I HID key state input (volume up), active high (PCM2706C). MC input (PCM2707C).⁽²⁾
I HID key state input (volume down), active high (PCM2706C). MD input (PCM2707C).⁽²⁾
I
Host detection during self-powered operation (connect to V_BUS). Max power select during bus-powered
operation. (low: 100 mA, high: 500 mA).⁽³⁾
— Analog ground for DAC, OSC, and PLL
I Power source select (low: self-power, high: bus-power)⁽¹⁾
O Suspend flag, active low (low: suspend, high: operational)
I Test pin. Must be set high⁽¹⁾
— Connect to USB power (V_BUS) for bus-powered operation. Connect to V_DD for self-powered operation.
— Analog power supply for headphone amplifier of L-channel⁽⁴⁾
— Analog power supply for DAC, OSC, and PLL⁽⁴⁾
— Analog power supply for headphone amplifier of R-channel⁽⁴⁾
— Common voltage for DAC (V_CCP/2). Connect decoupling capacitor to PGND.
— Digital power supply⁽⁴⁾
O DAC analog output for L-channel
O DAC analog output for R-channel
I Crystal oscillator input⁽¹⁾
O Crystal oscillator output
— Ground for internal regulator
(1) LV-TTL level.
(2) LV-TTL level with internal pulldown.
(3) LV-TTL level, 5-V tolerant.
(4) Connect decoupling capacitor to GND. Supply 3.3 V for self-powered applications.
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Product Folder Link(s): PCM2704C PCM2705C PCM2706C PCM2707C