Texas Instruments PCM2706 Evaluation Module PCM2706EVM-U PCM2706EVM-U 数据表
产品代码
PCM2706EVM-U
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.
Copyright © 2011–2012, Texas Instruments Incorporated
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