ETC CMI8738

CMI 8768
PCI 8CH Integrated Sound Chip
Enhanced by Xear 3DTM Sound Technology
Data Sheet
Rev. 1.0
Dec. 1, 2004
NOTICES
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RETRIEVAL SYSTEMS, WITHOUT PERMISSION IN WRITING FROM THE
C-MEDIA ELECTRONICS, INC.
Third-party brands and names are the property of their respective owners.
Copyright 2004-2005 © C-Media Electronics Inc.
C-Media Electronics, Inc.
6F, 100, Sec. 4, Civil Boulevard, Taipei, Taiwan 106, R.O.C.
TEL: 886-2-8773-1100
FAX: 886-2-8773-2211
http://www.cmedia.com.tw
For detailed product information, please contact sales@cmedia.com.tw
PCI 8CH Integrated Sound Chip
CMI8768 Datasheet Rev 1.0
Contents
0.
Revision History............................................................................................................... 3
1.
Features........................................................................................................................... 4
2.
Overview......................................................................................................................... 5
3.
Block Diagram................................................................................................................ 7
4.
Pin Assignment ............................................................................................................... 8
5.
Pin Description ................................................................................................................ 9
5.1
5.2
5.3
5.4
6.
6.1
6.2
6.3
6.4
6.5
6.6
7.
Digital I/O ....................................................................................................................... 9
Analog I/O ................................................................................................................... 10
Power & Ground ......................................................................................................... 10
NC …………………………………………………………………………………………..10
Electrical Characteristics............................................................................................. 11
Maximum Ratings ....................................................................................................... 11
Recommended Operating Conditions................................................................... 11
Power Consumption................................................................................................... 11
Digital Characteristics ................................................................................................ 11
AC Characteristics ..................................................................................................... 12
Analog Performance ................................................................................................. 13
Mechanical Dimensions .............................................................................................. 15
Copyright 2004-2005 © C-Media Electronics Inc.
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1
PCI 8CH Integrated Sound Chip
CMI8768 Datasheet Rev 1.0
List of Figures
Figure 1.
Figure 2.
Figure 3.
Figure 4.
Figure 5.
Figure 6.
Graphic User Interface Samples-- Main Setting & Mixer ............................... 5
Graphic User Interface Samples—Virtual Speaker SHIFTER & Sound Effect.. 6
Graphic User Interface Samples—Karaoke & Magic Voice & Information.. 6
Block Diagram ................................................................................................... 7
Top View of CMI8768......................................................................................... 8
Mechanical Dimension................................................................................... 15
Copyright 2004-2005 © C-Media Electronics Inc.
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2
PCI 8CH Integrated Sound Chip
CMI8768 Datasheet Rev 1.0
0. Revision History
Date
Rev.
Release Note
2003/06/13
Rev. 0.1
-
Preliminary vision
2003/07/17
Rev. 0.2
-
Change feature and pin description
2003/10/13
Rev. 0.3
-
Add analog performance data
2004/03/31
Rev. 0.9
-
Change product name from 8768+ to 8768
Update feature/overview description (Support
96K/24Bit output)
Clarify block diagram (no legacy/SBPRO support)
Correct pin function (#125 XS6CH=>GND;
#90-97 XGD0-XGD7=>NC)
Add Electrical Characteristics data and update
analog performance
Correct pin #59 EXTBASS type from analog
output to input
Add pin #62 description: XINTREF => Internal
reference voltage
Change feature description
Clarify DirectX9.0 installed is required for 8ch
playback support on Windows
Indicate pin#9 IDSEL can works only with
A16~31
Modify SPDIF-Out high voltage from VDD to 5V
2004/12/01
Rev. 1.0
-
Copyright 2004-2005 © C-Media Electronics Inc.
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3
PCI 8CH Integrated Sound Chip
CMI8768 Datasheet Rev 1.0
1. Features
„
The global first 8CH single sound chip with embedded codec
„
Full-duplex 8CH DAC/2CH ADC
„
Supports 96K/24bit playback; 48K/16bit recording
„
CE level high-quality Signal-to-Noise Ratio (SNR)~ 100dB
„
Integrated S/PDIF transmitter supports 44.1k/48k/96KHz sample-rate and
„
PCI Rev. 2.2 compliant with bus mastering modes
„
Supports the latest Dolby® Digital EX and DTS® ES 6.1/7.1CH DVD
16/24bits resolution
soundtrack playback
„
Two S/PDIF inputs for optical and coaxial connectors individually
„
Built-in earphone buffer at Front-Out pins (32Ω loading)
„
One GPIO (General purpose I/O) support
„
External EEPROM Interface for SID R/W purpose
„
Supports MPU401 MIDI UART port
„
DirectSound™ 3 HW acceleration compliant
„
Power On/Off anti-pop circuit reference design
„
ACPI compliant power down management
„
Zoomed Video Port support
„
Industrial standard QFP-128 package
„
Almost pin-to-pin compatible with CMI8738 series
„
Digital power = 3.3V & 5V, Analog power = 5V
Valuable S/W:
„
C-Media Xear 3D™ 7.1 Virtual Speaker SHIFTER technology
„
Interesting Magic VoiceTM feature to disguise users’ voice tone in all IP phones
(Skype, MSN, Yahoo,…), online games, messenger, and Internet
DJ/broadcasting applications
„
Unique Karaoke functionality: Mic Echo, Key-shifting, Vocal Cancellation
„
CRL3D® HRTF 3D positional sound enhancement from Sensaura® supporting
multi-drive 7.1, EnvironmentFX, ZoomFX, MacroFX, etc.
„
Supports most industrial standards of PC 3D sound for gaming, including EAX™
1.0&2.0, A3D™ 1.0, and DirectSound™ 3 SW
„
10-band Equalizer with 12 preset modes; 27 global environment effects
„
Support 7.1 CH digital audio playback for WinXP, 2K, ME, 98SE (Microsoft®
DirectX V.9.0 above is required)
„
WinCE driver and Linux OSS driver available
Copyright 2004-2005 © C-Media Electronics Inc.
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PCI 8CH Integrated Sound Chip
CMI8768 Datasheet Rev 1.0
2. Overview
CMI8768 is the first high performance (SNR~100dB) 8CH PCI integrated sound chip
compatible with PCI V.2.2 specification in the world. With 24bit/96K digital/analog
playback capability and versatile driver support, CMI8768 is designed delicately for
advanced consumer PC sound card/media center/mainboard/desktop/embedded
system/server audio applications. Through integrating a full-duplex 8/2 CODEC and
S/PDIF transmitter/receiver, CMI8768 consequently saves much BOM cost for
customers. CMI8768, bundled with C-Media friendly and high add-on value driver,
provides the most economic and ideal audio solution with the best value-price ratio.
Integrated S/PDIF transmitter can deliver 24bit/96K high-definition 5.1 Dolby®
Digital/DTS®, or 6.1/7.1 Dolby® Digital Surround EX/DTS ES DVD soundtracks and
audio stream to external receiver satisfying audio enthusiasts and pioneers. The
S/PDIF-Out data can meet the requirement of SCMS (Serial Copy Management
System) for digital content serial copy protection legislated by consumer audio
industry. CMI8768 also supports MPU-401 MIDI port for external musical instrument
input.
Figure 1. Graphic User Interface Samples-- Main Setting & Mixer
Being compatible with various industrial standards for gaming such as
EAX™ 1.0&2.0, A3D™ 1.0, Direct Sound™ 3D powered by Sensaura® CRL3D HRTF
3D engine, C-Media CMI8768 can provide enthusiastic gamers breathtaking sound
experience in gaming.
C-Media proprietary Xear 3DTM sound technology empowers users to shift virtual
speakers anywhere they want for optimizing the personal sound field. Virtual
speakers can even deliver up-to-7.1 channel surround sounds over only 2 physical
speakers or headphones. C-Media unique Magic VoiceTM functionality can reform your
microphone voice through the recording process delivering amazing disguise effects
Copyright 2004-2005 © C-Media Electronics Inc.
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PCI 8CH Integrated Sound Chip
CMI8768 Datasheet Rev 1.0
for fun in many applications, such as Internet phone, messenger, online games, etc.
Microphone echo and key-shifting features are well designed for karaoke application.
Other sound effects like 10-band Equalizer and 27 environment effects can enrich
user’s audio experience and enjoyment.
Figure 2. Graphic User Interface Samples—Virtual Speaker SHIFTER & Sound
Effect
Figure 3. Graphic User Interface Samples—Karaoke & Magic Voice & Information
Copyright 2004-2005 © C-Media Electronics Inc.
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6
PCI 8CH Integrated Sound Chip
CMI8768 Datasheet Rev 1.0
3. Block Diagram
CMI 8768
PCI Local Bus
DMA Engine
& IRQ
PCI
ZV Port
S/PDIF I/O
Digital I/O
Interface
Audio
DSP Engine
8CH DAC
2CH ADC
HP AMP
MPU-401
Port
PLL
(14.318MHz)
Analog
Mixer
8CH Analog Outputs
Line/CD/Aux Inputs
Microphone/PCBeep
Figure 4. Block Diagram
Copyright 2004-2005 © C-Media Electronics Inc.
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PCI 8CH Integrated Sound Chip
CMI8768 Datasheet Rev 1.0
4. Pin Assignment
Figure 5. Top View of CMI8768
Copyright 2004-2005 © C-Media Electronics Inc.
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8
PCI 8CH Integrated Sound Chip
CMI8768 Datasheet Rev 1.0
5. Pin Description
5.1 Digital I/O
Pin No
1-2,
5-7,
12-16,
19-21,
32-35,
38-41,
43-44,
47-52,
126-128
117
119
120
121
122
Signal Name
Type
XA31 – XA0
I/O
XINTA
XPRST
XCLK33
XGNT
XREQ
O
I
I
I
O
9
XIDSEL
I
23
XFRAME
I/O
24
XIRDY
I/O
25
XTRDY
I/O
26
XDEVSEL
I/O
29
XSTOP
I/O
30
XPAR
I/O
8, 22,
31, 42
XCBE0
XCBE3
–
I/O
88
89
55
56
87
84
85
112
98
XTXD
XRXD
XIN
XOUT
XGBIO0
XEECS
XMBCSZ
ZVCLK
XSPDIFO
O
I
I
O
I/O
O
I
I
O
86
XSPDIFI
I
XSPDIFI2
I
113
Description
PCI bus address and data lines
Interrupt request, active-low
Reset
PCI bus clock
Bus master grant, active-low.
Bus master request, tri-state output, active-low.
ID select, active-high. (only work with A16~31
pin of host controller)
Cycle frame, active-low.
Initiator ready, active-low. The bus master
device is ready to transmit or receive data.
Target ready, active-low. The target device is
ready to transmit or receive data.
Device select, active-low. The target device has
decoded the address of the current transaction
as its own chip select range.
Stop transaction, active-low. The target device
request to the master to stop the current
transaction.
Parity. The pin indicates even parity across
XA31-XA9 and XCBE3-XCBE0 for both address
and data phases.
Multiplexed command / byte enable. These pins
indicate cycle type during the address phase of a
transaction.
MIDI transmit data
MIDI receive data
14.318 MHz crystal input or ext. oscillator input
13.318 MHz crystal output or NC
General purpose I/O
EEPROM chip select
Audio chip enable select (low:enable)
ZV port clock
S/PDIF output (5V)
S/PDIF input 1 /
ZV port LR channel clock
S/PDIF input 2 (TTL 5V) /
ZV port data input
Copyright 2004-2005 © C-Media Electronics Inc.
Page 9
PCI 8CH Integrated Sound Chip
CMI8768 Datasheet Rev 1.0
5.2 Analog I/O
Pin No
Signal Name
Type
Description
57,58
59
62
64,65
66,67
68
69
XSUROUTL-R
EXTBASS
XINTREF
XADOUTL-R
XADCFL-R
XCNOUT
XBSOUT
O
I
O
O
O
O
O
XCDGND
O
XCDL-R
XREARL-R
XLNL-R
XAUXL-R
XPCSPKIN
XMIC
O
O
I
I
I
I
Back surround out L/R channel
External bass input
Internal reference voltage (for testing purpose)
Front out L/R channel
ADC S/H capacitors
Center channel output
Bass channel output
CD audio differential ground
channel output
CD audio differential L/R channel output
Side surround out L/R channel
Line-In L/R channel
Aux input L/R channel
PC beep or mono input
Microphone input
Type
Description
70
71,72
73,74
75,76
77,78
79
80
5.3 Power & Ground
Pin No
4, 10,
18, 27,
37, 45,
100,
124
54, 115
83
3, 11,
17, 28,
36, 46,
53, 82,
99, 116,
125
61, 81
60, 82
Signal Name
VDDIO
I
PCI I/O power pin (3.3V)
VDDCORE
VDD5V
I
I
Core logic power pin (3.3V)
PCI I/O power pin (5V)
GND
I
Digital ground
AVDD
AGND
I
I
Analog I/O power pin
Analog ground
5.4 NC
Pin No
Signal Name
63, 90-97, 101 – 111, 114, 118,
NC
123
Copyright 2004-2005 © C-Media Electronics Inc.
Page 10
PCI 8CH Integrated Sound Chip
CMI8768 Datasheet Rev 1.0
6. Electrical Characteristics
6.1 Maximum Ratings
Parameter
Digital power voltage
Analog power voltage
Digital Input Voltage
Analog Input Voltage
Operating temperature range
Storage temperature range
Maximum power dissipation
Symbol
Min.
Max.
Unit
DVDD
AVDD
VIND
VINA
TO
TST
PDMAX
3
3
-0.5
-0.5
0
-40
3.6
5.5
3.6
5.5
70
125
300
V
V
V
V
°C
°C
MW
6.2 Recommended Operating Conditions
Parameter
Digital Operating Voltage
Analog Operating voltage
Operating Ambient Temperature
Symbol
Min.
Typ.
Max.
Unit
DVDD
AVDD
TO
3.135
4.75
0
3.3
5
25
3.465
5.25
70
V
V
°C
6.3 Power Consumption
Parameter
Min.
Typ.
Max.
Unit
Power Supply Current (Normal)
AVDD (5.0V)
DVDD (3.3V)
-
35
10
-
mA
mA
6.4 Digital Characteristics
PARAMETER
Input high voltage(PCI I/O)
Input low voltage (PCI I/O)
Output high voltage
Output low voltage
Input Leakage Current
Output Leakage Current
SPDIF IN input high voltage
SPDIF IN input low voltage
SPDIF output high voltage
SPDIF output low voltage
Symbol Condition
VIH
VIL
VOH
VOL
IIL
IOL
VIH1
VIL1
VOH1
VOL1
IOH=1.5mA
IOL=-0.5mA
0<Vin<VDD
Copyright 2004-2005 © C-Media Electronics Inc.
Min.
2.0
-0.5
2.4
0.0
-70
-70
2.6
-
Typ.
Max.
Unit
VDD+0.3
0.8
VDD
0.2
0.4
70
70
2.4
VDD5V
GND
-
V
V
V
V
μA
μA
V
V
V
V
Page 11
PCI 8CH Integrated Sound Chip
CMI8768 Datasheet Rev 1.0
Input Pin Capacitance
Pin Inductance
Cin
Lpin
-
-
10
20
pF
nH
6.5 AC Characteristics
Parameter
High Clamp
Current
Low Clamp
Current
Output Rise
Slew Rate
Output Fall
Slew Rate
Symbol
Ich
Condition
Min.
Vdd+4>Vin>=Vdd+1 25+(Vin-Vdd-1)/0.015
Max. Units
-
mA
Icl
-3<Vin<=-1
-25+(Vin+1)/0.015
-
mA
SLEWr
0.2Vdd-0.6Vdd load
1
4
V/ns
SLEWf
0.6Vdd-0.2Vdd load
1
4
V/ns
Copyright 2004-2005 © C-Media Electronics Inc.
Page 12
PCI 8CH Integrated Sound Chip
CMI8768 Datasheet Rev 1.0
6.6 Analog Performance
The measurements are performed under the circumstance as:
Tambient = 25℃, AVdd = 5.0V ± 5%, DVdd = 3.3V ± 5%, 10kΩ/50pF external load. Input is 1
kHz sine wave; Sampling frequency = 48 kHz; Bandwidth = 20 to 20 kHz; 0dB attenuation;
All sound effects such as 3D effects are disabled.
Parameter
Minimum
Full Scale Input Voltage:
Line Inputs (Mixer)
Line Inputs (A/D)
Mic Inputs (20dB boost)
Full Scale Output Voltage:
Front_Out
Side_Surround_Out
Center / LFE_out
Back_Surround_Out
SNR (Idle)
A/A
D/A
A/D
Dynamic Range (-60dB)
A/A
D/A
A/D
THD+N
A/A
D/A
A/D
Frequency Response
A/A
5
D/A
5
A/D
10
Cross-talk @ 10KHz (A/A)
Transition Band
19,200
Stop Band
28,800
Stop Band Rejection
Out-Of-Band Rejection
Power Supply Rejection Ratio
Master Volume Gain (32 steps)
Step Size
Control Range
-54
Analog Input Gain (16 steps)
Step Size
Control Range
-30
Mic Input Gain (16 steps)
Step Size
Control Range
-22
Mic Boost Gain
PCSPK Input Gain (4 steps)
Step Size
Control Range
-24
Recording Gain (16 steps)
Step Size
Control Range
0
Input Impedance
Copyright 2004-2005 © C-Media Electronics Inc.
Typical
Maximum
Units
1.1
0.1
1.25
1.25
1.25
Vrms
Vrms
Vrms
1.1
1.1
1.1
1.1
-
Vrms
Vrms
Vrms
Vrms
100
101
86
-
dB
dB
dB
100
94
85
-
dB
dB
dB
0.005
0.017
0.015
-
%
%
%
100
22,000
22,000
22,000
28,800
∞
-
Hz
Hz
Hz
dB
Hz
Hz
dB
dB
dB
1.5
-
+6
dB
dB
2
-
0
dB
dB
3
+20
+24
-
dB
dB
dB
0
dB
dB
+22.5
dB
dB
-70
-65
-65
8
1.5
-
Page 13
PCI 8CH Integrated Sound Chip
CMI8768 Datasheet Rev 1.0
Parameter
Minimum
Typical
Maximum
Units
-
60
30
10
-
KΩ
KΩ
KΩ
-
2
200
-
Ω
Ω
-
50
0.16
-
mW
mW
-
2.25
-
V
Line-In, CD, Aux, PCSPK
Mic (w/o Boost)
Mic (w/ Boost)
Output Impedance
Amplifier Output
Non-amp Output
Output Power
Line-Out (Front) @32Ω Load
Line-Out (Front) @10KΩ Load
Vrefout
Copyright 2004-2005 © C-Media Electronics Inc.
Page 14
PCI 8CH Integrated Sound Chip
CMI8768 Datasheet Rev 1.0
7. Mechanical Dimensions
QFP-128
Figure 6. Mechanical Dimension
Symbols
Min.
Typ.
Max.
Notes
A1
A2
b
C
D
E
e
Hd
He
L
L1
Y
θº
0.25
2.57
0.10
0.10
13.90
19.90
17.00
23.00
0.65
0
0.35
2.72
0.20
0.15
14.00
20.00
0.50
17.20
23.20
0.80
1.60
-
0.45
2.87
0.30
0.20
14.10
20.10
17.40
23.40
0.95
0.08
12
1. Jedec outline:N/A
2. Datum plane H is located at the
bottom of the mold parting line
coincident with where the lead exits
the body.
3. Dimensions E and D do not include
mold protrusion. Allowable protrusion
is 0.25 mm per side. Dimensions E and
D do include mold mismatch and are
determined at datum plane H.
4. Dimension b does not include dambar
protrusion.
Unit:mm
~The End of Datasheet~
Copyright 2004-2005 © C-Media Electronics Inc.
Page 15