CM6500B Datasheet, PDF (11/36 Pages) C-Media Electronics – USB Audio Sound Chip

CM6500 / CM6500B
USB Audio Sound Chip
5.2 Pin Description
Pin #
7
6
Symbol
XTAL_O
XTAL_I
10
USB_DN
9
USB_DP
13
DV50
12
XV33
40
GND3IO
11
XV18
8
GND18
30
AV50
14
AGND
29
XV35_DAC
22
XV35_ADC
21
AGND
26
XV35_DRIVER
27
AGND
15
XACREF
16
XMICL
17
XMICR
18
XMICBIAS2
19
XMICBIAS1
20
XVAG
23
XVOLADJ
24
XLNOUTL
25
XLOCOM
28
XLNOUTR
1
SPDIF_O
I/O
AO
AI
AIO
AIO
PWR
AO
GND
AO
GND
PWR
GND
AO
PWR
GND
PWR
GND
AO
AI
AI
AO
AO
AO
AI
AO
AO
AO
DO
Description
Clock
12MHz crystal oscillator output
12MHz crystal oscillator input
USB2.0 BUS Interface
USB 2.0 data negative (USB D- signal)
USB 2.0 data positive (USB D+ signal)
Power/Ground
5V digital power for 5/3.3 regulator
Regulator 3.3V output, drive capacity 150mA for USB and digital I/O
Digital Ground
Regulator 1.8V output, drive capacity 100mA for digital core
Digital Ground
5V analog power for 5/3.5 regulator
Analog Ground
Regulator 3.5V output, drive capacity 100mA for analog and amplifier
3.5V power for ADC and Voltage and Current Reference
Analog Ground
3.5V power for Driver
Analog Ground
Audio Interface
Input signal common reference
Mic in left channel
Mic in right channel
Microphone bias
Microphone bias
Voltage reference cap filter
Analog control voltage input for playback volume control
Line out left channel
Line out common reference for cap-less connection
Line out right channel
S/PDIF I/O
S/PDIF transmitter
Programmable 3.3V output buffer
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