PCM2704_15 Datasheet, PDF (7/39 Pages) Texas Instruments – SINGLE-ENDED HEADPHONE OUTPUT AND S/PDIF OUTPUT

PCM2704 and PCM2705
Not Recommended For New Designs
PCM2704, PCM2705
PCM2706, PCM2707
www.ti.com....................................................................................................................................................... SLES081F – JUNE 2003 – REVISED JANUARY 2009
Terminal Functions (PCM2706PJT/PCM2707PJT)
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 (PCM2706). Must be left open (PCM2707).
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 (PCM2706). Must be left open with pullup resistor (PCM2707). ⁽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 (PCM2706). MS input (PCM2707) ⁽²⁾
I HID key state input (volume up), active HIGH (PCM2706). MC input (PCM2707) ⁽²⁾
I HID key state input (volume down), active HIGH (PCM2706). MD input (PCM2707) ⁽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.
Copyright © 2003–2009, Texas Instruments Incorporated
Submit Documentation Feedback
7
Product Folder Link(s): PCM2704 PCM2705 PCM2706 PCM2707