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CM 108AH Highly Integrated USB Audio I/O Controller www .cmedia.com.tw Copyright© C-Media Electro nics Inc. R ev . 2.1 ︱ P age 22/27 8 Electrical Char acterist ics 8.1 Absolute Maximu m Rating Symbol Parameters Value Uni…
CM108AH
Highly Integrated USB Audio I/O Controller
www.cmedia.com.tw
Copyright© C-Media Electronics Inc. Rev. 2.1︱ Page 21/27
HID_OR2 (HID output report byte 2)
Offset: 0x06
Bits
Read/Write
Description
Default
7-0
R / W
When HID_OR0[7:6] == 2’b00: HID_OR2[3:0] is the mode
setting for GPIO4 ~ GPIO1
0: set GPIO to input mode
1: set GPIO to output mode
When HID_OR0[7:6] == 2’b01: reserved
When HID_OR0[7:6] == 2’b1x: mapped to EEPROM_DATA1
0x00
HID_OR3 (HID output report byte 3)
Offset: 0x07
Bits
Read/Write
Description
Default
7-0
R / W
When HID_OR0[7] == 1’b0: category byte of SPDIF status
channel
When HID_OR0[7] == 1’b1: mapped to EEPROM_CTRL
0x00
Note: HID_OR3 is used for SPDIF when SPDIF_CONFIG[5] == 1’b0
CM108AH
Highly Integrated USB Audio I/O Controller
www.cmedia.com.tw
Copyright© C-Media Electronics Inc. Rev. 2.1︱ Page 22/27
8 Electrical Characteristics
8.1 Absolute Maximum Rating
Symbol
Parameters
Value
Unit
Dvmin
Min. digital supply voltage
– 0.3
V
Dvmax
Max. digital supply voltage
+ 6
V
Avmin
Min. analog supply voltage
– 0.3
V
Avmax
Max. analog supply voltage
+ 6
V
Dvinout
Voltage on any digital input or output pin
–0.3 to +5.5
V
Avinout
Voltage on any analog input or output pin
–0.3 to +5.5
V
TBstgB
Storage temperature range
-40 to +125
P0PC
ESD (HBM)
ESD human body mode
4000
V
ESD (MM)
ESD machine mode
200
V
Latch Up
JEDEC standard no.78, Mar. 1997
200
mA
8.2 Operation Conditions
Operation conditions
Min
Typ
Max
Unit
Analog supply voltage
4.5
5.0
5.5
V
Digital supply voltage
4.5
5.0
5.5
V
Total power consumption
-
35
mA
Suspend-mode power consumption
-
500
uA
Operating ambient temp.
-15
-
70
PoPC
CM108AH
Highly Integrated USB Audio I/O Controller
www.cmedia.com.tw
Copyright© C-Media Electronics Inc. Rev. 2.1︱ Page 23/27
8.3 Electrical Parameters
Min.
Typ.
Max.
Unit
DAC (10K Ohm Loading)
Resolution
-
16
-
Bits
THD + N (-3dBr)
-
-74.29
-
dB
SNR
-
93.6
-
dB
Silent SNR
-
98.2
-
dB
Dynamic range
-
93.8
-
dB
Frequency response 48KHz
20
-
20K
Hz
Frequency response 44.1KHz
20
-
20K
Hz
Output voltage (rms)
-
1.25
-
Vrms
Output voltage swing
0.5
-
4.0
V
DAC (32 Ohm loading)
Resolution
-
16
-
Bits
THD + N (-3dBr)
-
-71.1
-
dB
SNR
-
93.7
-
dB
Silent SNR
-
98.2
-
dB
Dynamic range
-
93.8
-
dB
Frequency response 48KHz
20
-
20K
Hz
Frequency response 44.1KHz
20
-
20K
Output voltage (rms)
-
1.25
-
Vrms
Output voltage swing
0.5
-
4.0
V
ADC
Resolution
-
16
-
bit
THD + N (-3dBr)
-
-76.1
-
dB
SNR
-
83.1
-
dB
Dynamic range
-
81.6
-
dB
Frequency response 48KHz
20
-
19.2K
Hz
Frequency response 44.1KHz
20
-
17.6K
Hz
Input range
0
-
2.88
Vpp
Amplification
Volume control level
-45
-
0
dB
Volume control step
-
38
-
Steps
Microphone Input
Boost gain
-
+22.5
-
dB
Gain adjustment range
0
-
22.5
dB
Gain adjustment steps
-
16
-
Steps
Mixer gain adjustment
-33.0
-
12.0
dB
Mixer gain adjustment steps
-
32
-
Steps