Datasheet
PCM2704C, PCM2705C
PCM2706C, PCM2707C
www.ti.com
SBFS036A –AUGUST 2011–REVISED JULY 2012
Table 1. Pin Descriptions: DB Package (PCM2704C/PCM2705C)
TERMINAL
NAME NO. I/O DESCRIPTION
AGNDL 12 — Analog ground for headphone amplifier of L-channel
AGNDR 17 — Analog ground for headphone amplifier of R-channel
CK 2 O Clock output for external ROM (PCM2704C). Must be left open (PCM2705C).
D+ 9 I/O USB differential input/output plus
(1)
D– 8 I/O USB differential input/output minus
(1)
DGND 6 — Digital ground
DOUT 5 O S/PDIF output
DT 3 I/O Data input/output for external ROM (PCM2704C). Must be left open with pull-up resistor (PCM2705C).
(1)
HID0/MS 22 I HID key state input (mute), active high (PCM2704C). MS input (PCM2705C).
(2)
HID1/MC 23 I HID key state input (volume up), active high (PCM2704C). MC input (PCM2705C).
(2)
HID2/MD 24 I HID key state input (volume down), active high (PCM2704C). MD input (PCM2705C).
(2)
Host detection during self-powered operation (connect to V
BUS
). Max power select during bus-powered
HOST 21 I
operation (low: 100 mA, high: 500 mA).
(3)
PGND 19 — Analog ground for DAC, OSC, and PLL
PSEL 4 I Power source select (low: self-power, high: bus-power)
(1)
SSPND 27 O Suspend flag, active low (low: suspend, high: operational)
TEST0 26 I Test pin. Must be set high
(1)
TEST1 25 I Test pin. Must be set high
(1)
V
BUS
10 — Connect to USB power (V
BUS
) for bus-powered operation. Connect to V
DD
for self-powered operation.
V
CCL
13 — Analog power supply for headphone amplifier of L-channel
(4)
V
CCP
20 — Analog power supply for DAC, OSC, and PLL
(4)
V
CCR
16 — Analog power supply for headphone amplifier of R-channel
(4)
V
COM
18 — Common voltage for DAC (V
CCP
/2). Connect decoupling capacitor to PGND.
V
DD
7 — Digital power supply
(4)
V
OUT
L 14 O DAC analog output for L-channel
V
OUT
R 15 O DAC analog output for R-channel
XTI 28 I Crystal oscillator input
(1)
XTO 1 O Crystal oscillator output
ZGND 11 — 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