CM6502B Datasheet, PDF (11/40 Pages) C-Media Electronics – USB Audio Sound Chip

CM6502 / CM6502B
USB Audio Sound Chip
Pin Description
Pin #
Symbol
I/O
7
XTAL_O
AO
6
XTAL_I
AI
10
USB_DN
AIO
9
USB_DP
AIO
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
PWR
AO
GND
AO
GND
PWR
GND
AO
PWR
GND
PWR
GND
15
XACREF
AO
16
XMICL
AI
17
XMICR
AI
18
XMICBIAS2
AO
19
XMICBIAS1
AO
20
XVAG
AO
23
XVOLADJ
AI
24
XLNOUTL
AO
25
XLOCOM
AO
28
XLNOUTR
AO
1
SPDIF_O
DO
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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
Rev. 1.02 ︱ Page 11