AKM AK4706

ASAHI KASEI
[AK4706]
AK4706
2ch 24bit DAC with AV Switch & HD/SD Video Filter
GENERAL DESCRIPTION
The AK4706 offers the ideal features for digital set-top-box systems. Using AKM's multi-bit architecture
for its modulator, the AK4706 delivers a wide dynamic range while preserving linearity for improved
THD+N performance. The AK4706 integrates a combination of SCF and CTF filters, removing the need
for high cost external filters and increasing performance for systems with excessive clock jitter. The
AK4706 also including the audio switches, volumes, video switches, HD/SD video filters, etc. designed
primarily for digital set-top-box systems with SCART routing. The AK4706 is offered in a space saving
64-pin LQFP package.
FEATURES
†DAC
Sampling Rates Ranging from 8kHz to 50kHz
64dB High Attenuation 8x FIR Digital Filter
2nd Order Analog LPF
On Chip Buffer with Single-Ended Output
Digital De–Emphasis for 32k, 44.1k and 48kHz Sampling
I/F Format: 24bit MSB Justified, I2S, 18/16bit LSB Justified
Master Clock: 256fs, 384fs
High Tolerance to Clock Jitter
†Analog Switches
Audio Section
THD+N: –86dB (@2Vrms)
Dynamic Range: 96dB (@2Vrms)
Stereo Analog Volume with Pop-noise Free Circuit: +6dB to –60dB & Mute
Analog Inputs
Two Stereo Inputs (TV&VCR SCART)
One Stereo Input (Changeover to Internal DAC)
Analog Outputs
Two Stereo Outputs (TV, VCR SCART)
One Mono Output (Modulator)
Pop Noise Free Circuit for Power On/Off
Video Section
Integrated LPF
SD: [email protected]
HD: [email protected] or 54MHz or 27MHz selectable
75ohm Driver
6dB Gain for Outputs
Adjustable Gain
Four CVBS/Y Inputs (ENCx2, TV, VCR), Three CVBS/Y Outputs (RF, TV, VCR)
Three R/C Inputs (ENCx2, VCR), Two R/C outputs (TV, VCR)
Three G and B Inputs (ENC, VCR, HD), Two G and B Outputs (TV, HD)
Bi-Directional Control for VCR-Red/Chroma
YPbPr Option (to 6MHz)
VCR Input Monitor
Loop–Through Mode for Standby
Auto–Startup Mode for Power Saving
SCART Pin#16(Fast Blanking), Pin#8(Slow Blanking) Control
S1/S2 DC Control
MS0507-E-00
2006/05
-1-
ASAHI KASEI
[AK4706]
†AK4702/05 Software Compatible
†Power Supply
5V+/–5% and 12V+/–5%
Low Power Dissipation / Low Power Standby Mode
†Package
Small 64pin LQFP
VD1
VD2
MONOOUT
VP
VSS1
+6 to -60dB
-6dB/0dB/
+2.44/+4dB
VSS2
VOL
(2dB/step)
MCLK
LRCK
TVOUTL
DAC
BICK
TVOUTR
SDTI
Volume #0
Volume #1
MONO
TV1/0
VCRINL
VCRINR
TVINL
VCROUTL
VCROUTR
TVINR
VMONO
Bias (Mute)
SCK
SDA
VCR1/0
Register
DVCOM
Control
PVCOM
PDN
Audio Block(DAPD=“0”)
VD1
VD2
MONOOUT
VP
VSS1
VSS2
+6 to -60dB
0dB/+6dB
VOL
(2dB/step)
(NC)
TVOUTL
DACL
DACR
TVOUTR
(NC)
Volume #2
Volume #1
MONO
TV1/0
VCRINL
VCRINR
TVINL
VCROUTL
VCROUTR
TVINR
VMONO
Bias (Mute)
SCK
SDA
VCR1/0
Register
DVCOM
Control
PVCOM
PDN
Audio Block(DAPD=“1”)
MS0507-E-00
2006/05
-2-
ASAHI KASEI
( Typical connection )
[AK4706]
VVD1
VVD2
VVD3
VVD4
( Typical connection )
VVSS1
VVSS2
VVSS3
VVSS4
(ENC CVBS/Y)
ENCV
(ENC Y)
ENCY
(VCR CVBS/Y)
(TV CVBS)
6dB
RFV
6dB
TVVOUT
RF Mod
VCRVIN
TVVIN
0, 1, 2, 3dB
(ENC R/C/Pr)
(ENC C)
(VCR R/C/Pr)
ENCRC
6dB
ENCC
TVRC
VCRRC
(ENC G/CVBS)
ENCG
(VCR G)
VCRG
(ENC B/Pb)
ENCB
(VCR B/Pb)
VCRB
TV SCART
6dB
TVG
6dB
TVB
mon
6dB
VCRVOUT
VCR SCART
6dB
VCRC
(ENC R/Pr)
6dB
HDPR
6dB
HDY
6dB
HDPB
ENCPR
(ENC G/Y)
ENCY2
(ENC B/Pb)
ENCPB
YPbPr/RGB
Video Block
MS0507-E-00
2006/05
-3-
ASAHI KASEI
[AK4706]
( Typical connection )
(VCR FB)
( Typical connection )
VCRFB
0/4V
driver
TVFB
0/2.2/5V
TV SCART
0/6/12V
0/2.2/5V
TVSB
VCRSB
VCR SCART
0/ 6/ 12V
Monitor
INT
Video Blanking Block
MS0507-E-00
2006/05
-4-
ASAHI KASEI
[AK4706]
„ Ordering Guide
-10 ∼ +70°C
AK4706VQ
64pin LQFP (0.5mm pitch)
VVD4
NC
VVSS4
PDN
SDA
SCL
LRCK
SDTI
BICK
MCLK
VD2
VD1
VSS2
59
58
57
56
55
54
53
52
51
50
49
NC
62
60
VVSS3
63
61
NC
64
„ Pin Layout
1
48
VSS1
HDPR
2
47
PVCOM
HDPB
3
46
DVCOM
VVD3
4
45
VP
RFV
5
44
MONOOUT
VCRVOUT
6
43
TVOUTL
TVFB
7
42
TVOUTR
VCRC
8
41
VCROUTL
VVSS2
9
40
VCROUTR
TVVOUT
10
39
TVINL
VVD2
11
38
TVINR
TVRC
12
37
VCRINL
TVG
13
36
VCRINR
TVB
14
35
TVSB
VVSS1
15
34
VCRSB
REFI
16
33
INT
AK4706VQ
30
31
32
VCRG
VCRB
26
ENCY
VCRRC
25
ENCV
29
24
ENCC
28
23
ENCRC
VCRFB
22
ENCG
VCRVIN
21
ENCB
27
20
ENCPB
TVVIN
18
19
ENCY2
VVD1
ENCPR
Top View
17
HDY
„ Main difference between AK4705 and AK4706
Items
HD Video Driver, Filter
S1/S2 Chroma DC Detector/Generator
Package
AK4705
48LQFP
MS0507-E-00
AK4706
X
X
64LQFP
-: NOT available. X: Available
2006/05
-5-
ASAHI KASEI
[AK4706]
PIN/FUNCTION
No.
1
2
3
4
Pin Name
HDY
HDPR
HDPB
VVD3
I/O
O
O
O
-
5
6
7
8
9
10
11
RFV
VCRVOUT
TVFB
VCRC
VVSS2
TVVOUT
VVD2
O
O
O
O
O
-
12
13
14
15
16
TVRC
TVG
TVB
VVSS1
REFI
O
O
O
O
17
VVD1
-
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
ENCY2
ENCPR
ENCPB
ENCB
ENCG
ENCRC
ENCC
ENCV
ENCY
TVVIN
VCRVIN
VCRFB
VCRRC
VCRG
VCRB
INT
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
O
34
35
36
37
38
39
40
41
42
43
VCRSB
TVSB
VCRINR
VCRINL
TVINR
TVINL
VCROUTR
VCROUTL
TVOUTR
TVOUTL
I/O
O
I
I
I
I
O
O
O
O
Function
Green/Y Output Pin
Red/Pr Output Pin
Blue/Pb Output Pin
Video Power Supply Pin #3. 5V.
Normally connected to VVSS3 with a 0.1µF ceramic capacitor in parallel
with a 10µF electrolytic cap.
Composite Output Pin for RF modulator
Composite/Luminance Output Pin for VCR
Fast Blanking Output Pin for TV
Chrominance Output Pin for VCR
Video Ground Pin #2. 0V.
Composite/Luminance Output Pin for TV
Video Power Supply Pin #2. 5V.
Normally connected to VVSS with a 0.1µF ceramic capacitor in parallel with
a 10µF electrolytic cap.
Red/Chrominance/Pr Output Pin for TV
Green/Y Output Pin for TV
Blue/Pb Output Pin for TV
Video Ground Pin #1. 0V.
Video Current Reference Setup Pin
Normally connected to VVD1 through a 10kΩ±1% resistor externally.
Video Power Supply Pin #1. 5V.
Normally connected to VVSS with a 0.1µF ceramic capacitor in parallel with
a 10µF electrolytic cap.
Green/Y Input Pin for Encoder
Red/Chrominance/Pr Input Pin for Encoder
Blue/Pb Input Pin for Encoder
Blue/Pb Input Pin for Encoder
Green/Y Input Pin for Encoder
Red/Chrominance/Pr Input Pin for Encoder
Chrominance Input Pin for Encoder
Composite/Luminance Input1 Pin for Encoder
Composite/Luminance Input2 Pin for Encoder
Composite/Luminance Input Pin for TV
Composite/Luminance Input Pin for VCR
Fast Blanking Input Pin for VCR
Red/Chrominance/Pr Input Pin for VCR
Green/Y Input Pin for VCR
Blue/Pb Input Pin for VCR
Interrupt Pin for Video Blanking
Normally connected to VD(5V) through 10kΩ resistor externally.
Slow Blanking Input/Output Pin for VCR
Slow Blanking Output Pin for TV
Rch VCR Audio Input Pin
Lch VCR Audio Input Pin
Rch TV Audio Input Pin
Lch TV Audio Input Pin
Rch VCR Audio Output Pin
Lch VCR Audio Output Pin
Rch TV Audio Output Pin
Lch TV Audio Output Pin
MS0507-E-00
2006/05
-6-
ASAHI KASEI
[AK4706]
PIN/FUNCTION (Continued)
44
45
MONOOUT
VP
O
-
46
DVCOM
O
47
PVCOM
O
48
49
50
VSS1
VSS2
VD1
-
51
VD2
-
52
56
57
58
MCLK
(NC)
BICK
DACR
SDTI
(NC)
LRCK
DACL
SCL
SDA
PDN
I
I
I
I
I
I
I
I/O
I
59
60
VVSS4
NC
-
61
VVD4
-
62
NC
-
63
64
VVSS3
NC
-
53
54
55
MONO Analog Output Pin
Power Supply Pin. 12V.
Normally connected to VSS with a 0.1µF ceramic capacitor in parallel with a
10µF electrolytic cap.
DAC Common Voltage Pin
Normally connected to VSS with a 0.1µF ceramic capacitor in parallel with a
10µF electrolytic cap.
Audio Common Voltage Pin
Normally connected to VSS1 with a 0.1µF ceramic capacitor in parallel with a
10µF electrolytic cap. The caps affect the settling time of audio bias level.
Ground Pin. 0V.
Ground Pin. 0V.
Power Supply Pin. 5V.
Normally connected to VSS2 with a 0.1µF ceramic capacitor in parallel with
a 10µF electrolytic cap.
Power Supply Pin. 5V.
Normally connected to VSS with a 0.1µF ceramic capacitor in parallel with a
10µF electrolytic cap.
Master Clock Input Pin at DAPD= “0”.
No Connect pin at DAPD=”1”. This pin should be open.
Audio Serial Data Clock Pin at DAPD= “0”.
Rch Analog Audio Input Pin at DAPD= “1”.
Audio Serial Data Input Pin at DAPD= “0”.
No Connect pin at DAPD= “1”. This pin should be open.
L/R Clock Pin at DAPD= “0”.
Lch Analog Audio Input Pin at DAPD= “1”.
Control Data Clock Pin
Control Data Pin
Power-Down Mode Pin
When at “L”, the AK4706 is in the power-down mode and is held in reset. The
AK4706 should always be reset upon power-up.
Video Ground Pin #4. 0V.
No Connect pin.
This pin should be connected to VSS1.
Video Power Supply Pin #4. 5V.
Normally connected to VVSS3 with a 0.1µF ceramic capacitor in parallel
with a 10µF electrolytic cap.
No Connect pin.
This pin should be connected to VSS1.
Video Ground Pin #3. 0V.
No Connect pin.
This pin should be connected to VSS1.
MS0507-E-00
2006/05
-7-
ASAHI KASEI
[AK4706]
„ Handling of Unused Pin
The unused I/O pins should be processed appropriately as below.
Classification
Analog
Digital
Pin Name
HDY, HDPR, HDPB, VCRC, TVVOUT, TVRC,
TVG, TVB, ENCY2, ENCPR, ENCPB, ENCB,
ENCG, ENCRC, ENCC, ENCV, ENCY, TVVIN,
VCRVIN, VCRRC, VCRG, VCRB, VCRINR,
VCRINL, TVINR, TVINL, VCROUTR, VCROUTL,
TVOUTR, TVOUTL, MONOOUT, DACR, DACL,
RFV, VCRVOUT
VCRSB (O), TVFB, TVSB
VCRFB, VCRSB (I), MCLK, BICK, SDTI, LRCK,
SCL, SDA, INT
MS0507-E-00
Setting
These pins should be open.
These pins should be open.
These pins should be connected to VSS2.
2006/05
-8-
ASAHI KASEI
[AK4706]
Internal Equivalent Circuits
Pin No.
Pin Name
52
53
54
55
56
58
MCLK
BICK
SDTI
LRCK
SCL
PDN
Type
Digital IN
(DAPD="0")
Equivalent Circuit
VD2
(60k)
200
Analog IN
(DAPD="1")
Description
The 60kΩ is attached
only for BICK pin and
LRCK pin.
VSS2
VD2
57
SDA
200
Digital I/O
I2C Bus voltage must
not exceed VD2.
VSS2
VVD1
33
INT
Normally connected to
VVD1(5V) through
10kΩ resistor
externally.
Digital OUT
VSS1
5
6
7
8
10
12
13
14
RFV
VCROUT
TVFB
VCRC
TVVOUT
TVRC
TVG
TVB
VVD1
Video OUT
VVSS1
VVD4
1
2
3
HDY
HDPR
HDPB
VVD2
VVSS2
VVD3
Video OUT
VVSS4
VVSS3
VVD1
200
16
REFI
REFI IN
Normally connected to
VVD1 through a 10kΩ
±1% resistor.
VVSS1
MS0507-E-00
2006/05
-9-
ASAHI KASEI
Pin No.
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Pin Name
ENCY2
ENCPR
ENCPB
ENCB
ENCG
ENCRC
ENCC
ENCV
ENCY
TVVIN
VCRVIN
VCRFB
VCRRC
VCRG
VCRB
[AK4706]
Type
Equivalent Circuit
VVD1
200
Video IN
VVSS1
VP
34
35
VCRSB
TVSB
Description
VP
200
The 120kΩ is not
attached for TVSB pin
and SDC bit = “H”.
Video SB
(120k)
VSS1 VSS1
VSS1
VP
36
37
38
39
VCRINR
VCRINL
TVINR
TVINL
150k
Audio IN
VSS1
VP
40
41
42
43
44
VCROUTR
VCROUTL
TVOUTR
TVOUTL
MONOOUT
VP
100
Audio OUT
VSS1
VSS1
VD1 VD1
46
47
DVCOM
PVCOM
VD1
100
VCOM OUT
VSS1 VSS1
MS0507-E-00
VSS1
2006/05
- 10 -
ASAHI KASEI
[AK4706]
ABSOLUTE MAXIMUM RATINGS
(VSS1=VSS2=VVSS1=VVSS2=VVSS3=VVSS4=0V;Note 1)
Parameter
Symbol
min
max
Units
Power Supply
VD1
-0.3
6.0
V
VD2
-0.3
6.0
V
VVD1
-0.3
6.0
V
VVD2
-0.3
6.0
V
VVD3
-0.3
6.0
V
VVD4
-0.3
6.0
V
VP
-0.3
14
V
|VSS1-VVSS4| (Note 2)
0.3
V
|VSS1-VVSS3|
(Note 2)
0.3
V
|VSS1-VVSS2|
(Note 2)
0.3
V
|VSS1-VVSS1|
(Note 2)
0.3
V
|VSS1-VSS2|
(Note 2)
0.3
V
Input Current (any pins except for supplies)
IIN
mA
±10
Input Voltage
(Note 3)
VIND
-0.3
VD2+0.3
V
Video Input Voltage
(Note 4.)
VINV
-0.3
VVD1+0.3
V
Audio Input Voltage (except DACL/R pins)
VINA
-0.3
VP+0.3
V
Audio Input Voltage (DACL/R pins)
VINA
-0.3
VD2+0.3
V
Ambient Operating Temperature
Ta
-10
70
°C
Storage Temperature
Tstg
-65
150
°C
Note 1.All voltages with respect to ground.
Note 2.VSS1, VSS2, VVSS1, VVSS2, VVSS3 and VVSS4 must be connected to the same analog ground plane.
Note 3.MCLK, BICK, SDTI, LRCK, SCL, PDN pins
Note 4.ENCY2, ENCPR, ENCPB, ENCB, ENCG, ENCRC, ENCC, ENCV, ENCY, TVVIN, VCRVIN, VCRFB,
VCRRC, VCRG, VCRB pins
WARNING: Operation at or beyond these limits may result in permanent damage to the device.
Normal operation is not guaranteed at these extremes.
RECOMMENDED OPERATING CONDITIONS
(VSS1=VSS2=VVSS1=VVSS2=VVSS3=VVSS4=0V; Note 1)
Parameter
Symbol
min
typ
Power Supply (Note 5)
VD1
4.75
5.0
VD2
4.75
5.0
VVD1
4.75
5.0
VVD2
4.75
5.0
VVD3
4.75
5.0
VVD4
4.75
5.0
VP
11.4
12
Note 5. Analog output voltage scales with the voltage of VD1.
AOUT ([email protected]) = 2Vrms × VD1/5.
The VVD1 and VVD2 must be the same voltage.
max
5.25
VD1
5.25
VVD1
VVD1
VVD1
12.6
Units
V
V
V
V
V
V
V
*AKM assumes no responsibility for the usage beyond the conditions in this datasheet.
MS0507-E-00
2006/05
- 11 -
ASAHI KASEI
[AK4706]
ELECTRICAL CHARACTERISTICS
(Ta = 25°C; VP=12V, VD1=VD2=5V; VVD1=VVD2=VVD3=VVD4=5V; fs = 48kHz; BICK = 64fs)
Power Supplies
Parameter
min
typ
max
Power Supply Current
Normal Operation (PDN pin = “H”; Note 6)
VD1+VD2
17
VVD1+VVD2+ VVD3+VVD4
90
VD1+VD2+ VVD1+VVD2+ VVD3+VVD4
150
VP
6
12
Power-Down Mode (PDN pin = “L”; Note 7)
VD1+VD2
10
100
VVD1+VVD2+ VVD3+VVD4
10
100
VP
10
100
Note 6. STBY bit = “L”, all video outputs are active.
No signal, no load for A/V switches. fs=48kHz “0”data input for DAC.
Note 7. All digital inputs including clock pins (MCLK, BICK and LRCK) are held at VD2 or VSS2.
DIGITAL CHARACTERISTICS
(Ta = 25°C; VD1=VD2= 4.75 ∼ 5.25V)
Parameter
Symbol
min
High-Level Input Voltage
VIH
2.0
Low-Level Input Voltage
VIL
Low-Level Output Voltage
VOL
(SDA pin: Iout= 3mA, INT pin: Iout= 1mA)
Input Leakage Current
Iin
-
MS0507-E-00
Units
mA
mA
mA
mA
µA
µA
µA
typ
-
max
0.8
0.4
Units
V
V
V
-
± 100
µA
2006/05
- 12 -
ASAHI KASEI
[AK4706]
ANALOG CHARACTERISTICS (AUDIO)
(Ta = 25°C; VP=12V, VD1=VD2=5V; VVD1=VVD2=VVD3=VVD4=5V; fs = 48kHz; BICK = 64fs; Signal Frequency
= 1kHz; 24bit Input Data; Measurement frequency = 20Hz ∼ 20kHz; RL ≥4.5kΩ; Volume #0=Volume #1=0dB,
0dB=2Vrms output; unless otherwise specified)
Parameter
min
typ
max
Units
24
bit
DAC Resolution
Analog Input: (TVINL/TVINR/VCRINL/VCRINR pins)
Analog Input Characteristics
Input Voltage
2
Vrms
Input Resistance
100
150
kΩ
Analog Input: (DACL/DACR pin)
Analog Input Characteristics
Input Voltage
1
Vrms
Input Resistance
40
60
kΩ
Stereo/Mono Output: (TVOUTL/TVOUTR/VCROUTL/VCROUTR/MONOOUT pins; Note 8)
Analog Output Characteristics
Volume#0 Gain (DAPD bit =”0”)
(DVOL1-0 = “00”)
0
dB
(DVOL1-0 = “01”)
-6
dB
(DVOL1-0 = “10”)
+2.44
dB
(DVOL1-0 = “11”. Note 9)
+4
dB
Volume#2 Gain (DAPD bit =”1”)
(DVOL1-0 = “00”)
5.3
6.0
6.7
dB
(DVOL1-0 = “01”)
-0.7
0
0.7
dB
Volume#1 Step Width (+6dB to –12dB)
1.6
2
2.4
dB
(-12dB to –40dB)
0.5
2
3.5
dB
(-40dB to –60dB)
0.1
2
3.9
dB
-86
-80
dB
THD+N
(at 2Vrms output. Note 10)
-60
dB
(at 3Vrms output. Note 10, Note 11)
Dynamic Range (-60dB Output, A-weighted. Note 10)
92
96
dB
S/N
(A-weighted. Note 10)
92
96
dB
Interchannel Isolation
(Note 10, Note 12)
80
90
dB
Interchannel Gain Mismatch
(Note 10, Note 12)
0.3
dB
Gain Drift
200
ppm/°C
Load Resistance (AC-Lord; Note 13)
TVOUTL/R, VCROUTL/R, MONOOUT
4.5
kΩ
Load Capacitance
TVOUTL/R, VCROUTL/R, MONOOUT
20
pF
Output Voltage
(Note 13, Note 14)
1.85
2
2.15
Vrms
Power Supply Rejection
(PSR. Note 15)
50
dB
Note 8. Measured by Audio Precision System Two Cascade.
Note 9. Output clips over –2.5dBFS digital input.
Note 10. DAC to TVOUT
Note 11. Except VCROUTL/VCROUTL pins.
Note 12. Between TVOUTL and TVOUTR with digital inputs 1kHz/0dBFS.
Note 13. THD+N: -80dB(min. at 2Vrns), -60dB(typ. at 3Vrms).
Note 14. Full-scale output voltage by DAC (0dBFS). Output voltage of DAC scales with the voltage of VD1,
Stereo output ([email protected]) = 2Vrms × VD1/5 when volume#0=volume#1=0dB. The output must not exceed 3Vrms.
Note 15. The PSR is applied to VD1 with 1kHz, 100mV.
MS0507-E-00
2006/05
- 13 -
ASAHI KASEI
[AK4706]
FILTER CHARACTERISTICS
(Ta = 25°C; VP=11.4∼12.6V, VD1=VD2=4.75∼5.25V, VVD1=VVD2=VVD3=VVD4=4.75∼5.25V; fs = 48kHz; DEM0
= “1”, DEM1 = “0”)
Parameter
Symbol
min
typ
max
Units
Digital filter
PB
0
21.77
kHz
Passband
±0.05dB
(Note 16)
24.0
kHz
-6.0Db
Stopband
(Note 16)
SB
26.23
kHz
Passband Ripple
PR
dB
± 0.01
Stopband Attenuation
SA
64
dB
Group Delay
(Note 17)
GD
24
1/fs
Digital Filter + LPF
FR
dB
Frequency Response 0 ∼ 20.0kHz
± 0.5
Note 16. The passband and stopband frequencies scale with fs.
e.g.) PB=0.4535×fs (@±0.05dB), SB=0.546×fs.
Note 17. The calculating delay time which occurred by digital filtering. This time is from setting the 16/18/24bit data of
both channels to input register to the output of analog signal.
MS0507-E-00
2006/05
- 14 -
ASAHI KASEI
[AK4706]
ANALOG CHARACTERISTICS (SD VIDEO)
(Ta = 25°C; VP=12V, VD1=VD2=5V; VVD1=VVD2=VVD3=VVD4=5V; VVOL1/0= “00”, unless otherwise
specified.)
Parameter
Conditions
min
typ
max
Units
Sync Tip Clamp Voltage
at output pin.
0.7
V
Chrominance Bias Voltage
at output pin.
2.2
V
R/G/B Clamp Voltage
at output pin.
0.7
V
Pb/Pr Clamp Voltage
at output pin.
2.2
V
Gain
Input=0.3Vp-p, 100kHz
5.5
6
6.5
dB
RGB Gain
Input=0.3Vp-p,
VVOL1/0= “00”
5.5
6
6.5
dB
100kHz
VVOL1/0= “01”
6.7
7.2
7.7
dB
VVOL1/0= “10”
7.7
8.2
8.7
dB
VVOL1/0= “11”
8.6
9.1
9.6
dB
Interchannel Gain Mismatch TVRC, TVG, TVB. Input=0.3Vp-p, 100kHz
-0.5
0.5
dB
Frequency Response
Input=0.3Vp-p, C1=C2=0pF. 100kHz to 6MHz.
-1.0
0.5
dB
at 10MHz.
-3
dB
at 27MHz.
-40
-25
dB
Group Delay Distortion
At 4.43MHz with respect to 1MHz.
15
ns
Input Impedance
Chrominance input (internally biased)
40
60
kΩ
Input Signal
f=100kHz, distortion < 1.0%, gain=6dB
1.5
Vpp
Load Resistance
(Note 18)
150
Ω
Load Capacitance
C1 (Note 18)
400
pF
C2 (Note 18)
15
pF
Dynamic Output Signal
f=100kHz, distortion < 1.0%
3
Vpp
Y/C Crosstalk
f=4.43MHz, 1Vp-p input. Among TVVOUT,
-50
dB
TVRC, VCRVOUT and VCRC outputs.
S/N
Reference Level = 0.7Vp-p, CCIR 567 weighting.
74
dB
BW= 15kHz to 5MHz.
Differential Gain
0.7Vpp 5steps modulated staircase.
+0.3
%
chrominance &burst are 280mVpp, 4.43MHz.
Differential Phase
0.7Vpp 5steps modulated staircase.
+0.6
Degree
chrominance &burst are 280mVpp, 4.43MHz.
Note 18. Refer the Figure 1.
R1
75 Ω
Video Signal Output
R2
75 Ω
C1
C2
max: 15pF
max: 400pF
Figure 1. Load Resistance R1+R2 and Load Capacitance C1/C2.
MS0507-E-00
2006/05
- 15 -
ASAHI KASEI
[AK4706]
ANALOG CHARACTERISTICS (HD VIDEO)
(Ta = 25°C; VP=12V, VD1=VD2=5V; VVD1=VVD2=VVD3=VVD4=5V; VVOL1/0= “00”, unless otherwise
specified.)
Parameter
Conditions
min
typ
max
Units
Sync Tip Clamp Voltage
at output pin.
0.7
V
R/G/B Clamp Voltage
at output pin.
0.7
V
Pb/Pr Clamp Voltage
at output pin.
2.2
V
Gain
Input=0.3Vp-p, 100kHz
5.5
6
6.5
dB
Frequency response
Input=0.3Vp-p, FL1/0,FLPB1/0,FLPR1/0= “10”
C1=C2=0pF
100kHz to 20MHz,
-1.0
1.0
dB
(Note 18)
at 30MHz.
-2.5
dB
at 74.25MHz.
-40
-25
dB
FL1/0,FLPB1/0,FLPR1/0= “01”
100kHz to 15MHz,
-1.0
1.0
dB
at 54MHz.
-40
-25
dB
FL1/0,FLPB1/0,FLPR1/0= “00”
100kHz to 6MHz,
-1.0
0.5
dB
at 27MHz.
-40
-25
dB
Input Signal
f=100kHz, distortion < 1.0%, gain=6dB
1.5
Vpp
Load Resistance
Load Capacitance
Dynamic Output Signal
Differential Gain
Differential Phase
C1
C2
f=100kHz, distortion < 1.0%
(Figure 1)
(Figure 1)
(Figure 1)
0.7Vpp 5steps modulated staircase.
chrominance &burst are 280mVpp, 4.43MHz.
FL1/0,FLPB1/0,FLPR1/0= “00”
0.7Vpp 5steps modulated staircase.
chrominance &burst are 280mVpp, 4.43MHz.
FL1/0,FLPB1/0,FLPR1/0= “00”
MS0507-E-00
-
400
10
3
Ω
pF
pF
Vpp
-
+0.3
-
%
-
+0.6
-
Degree
150
-
-
2006/05
- 16 -
ASAHI KASEI
[AK4706]
SWITCHING CHARACTERISTICS
(Ta = 25°C; VP=11.4 ∼ 12.6V, VD1=VD2=4.75 ∼ 5.25V, VVD1=VVD2=VVD3=VVD4=4.75 ∼ 5.25V; CL = 20pF)
Parameter
Symbol
Min
typ
max
Units
fCLK
8.192
12.8
MHz
Master Clock Frequency 256fs:
dCLK
40
60
%
Duty Cycle
fCLK
12.288
19.2
MHz
384fs:
dCLK
40
60
%
Duty Cycle
fs
32
50
kHz
LRCK Frequency
Duty
45
55
Duty Cycle
%
Audio Interface Timing
tBCK
312.5
ns
BICK Period
tBCKL
100
ns
BICK Pulse Width Low
tBCKH
100
ns
Pulse Width High
tBLR
50
ns
BICK “↑” to LRCK Edge
(Note 19)
tLRB
50
ns
LRCK Edge to BICK “↑”
(Note 19)
tSDH
50
ns
SDTI Hold Time
tSDS
50
ns
SDTI Setup Time
Control Interface Timing (I2C Bus):
400
kHz
SCL Clock Frequency
fSCL
1.3
µs
Bus Free Time Between Transmissions
tBUF
0.6
µs
Start Condition Hold Time
tHD:STA
(prior to first clock pulse)
µs
1.3
Clock Low Time
tLOW
µs
0.6
Clock High Time
tHIGH
µs
0.6
Setup Time for Repeated Start Condition
tSU:STA
µs
0
SDA Hold Time from SCL Falling (Note 20)
tHD:DAT
µs
0.1
SDA Setup Time from SCL Rising
tSU:DAT
0.3
µs
Rise Time of Both SDA and SCL Lines
tR
0.3
µs
Fall Time of Both SDA and SCL Lines
tF
0.6
µs
Setup Time for Stop Condition
tSU:STO
0
50
ns
tSP
Pulse Width of Spike Noise
Suppressed by Input Filter
Reset Timing
tPD
150
ns
PDN Pulse Width
(Note 21)
Note 19. BICK rising edge must not occur at the same time as LRCK edge.
Note 20. Data must be held for sufficient time to bridge the 300 ns transition time of SCL.
Note 21. The AK4706 should be reset by PDN pin = “L” upon power up.
Note 22. I2C is a registered trademark of Philips Semiconductors.
MS0507-E-00
2006/05
- 17 -
ASAHI KASEI
[AK4706]
„ Timing Diagram
1/fCLK
VIH
MCLK
VIL
tCLKH
tCLKL
dCLK=tCLKH x fCLK, tCLKL x fCLK
1/fs
VIH
LRCK
VIL
tBCK
VIH
BICK
VIL
tBCKH
tBCKL
Clock Timing
VIH
LRCK
VIL
tBLR
tLRB
VIH
BICK
VIL
tSDS
tSDH
VIH
SDTI
VIL
Serial Interface Timing
MS0507-E-00
2006/05
- 18 -
ASAHI KASEI
[AK4706]
VIH
SDA
VIL
tBUF
tLOW
tR
tHIGH
tF
tSP
VIH
SCL
VIL
tHD:STA
Stop
tHD:DAT
tSU:DAT
tSU:STA
tSU:STO
Start
Stop
Start
I2C Bus mode Timing
tPD
PDN
VIL
Power-down Timing
MS0507-E-00
2006/05
- 19 -
ASAHI KASEI
[AK4706]
OPERATION OVERVIEW
1. System Reset and Power-down options
The AK4706 should be reset once by bringing PDN pin = “L” upon power-up. The AK4706 has several operation modes.
The PDN pin, AUTO bit, DAPD bit, MUTE bit and STBY bit control operation modes as shown in Table 1 and Table 2.
0
PDN
pin
“L”
AUTO
bit
*
STBY
bit
*
MUTE
bit
*
DAPD
bit
*
1
“H”
1
*
*
*
2
3
“H”
“H”
0
0
1
1
1
0
*
*
4
“H”
0
0
1
1
5
“H”
0
0
1
0
6
“H”
0
0
0
1
7
“H”
0
0
0
0
Mode
Mode
Full Power-down
Auto Startup mode
(default)
Standby & mute
Standby
Mute
(DAC power down)
Mute
(DAC operation)
Normal operation
(DAC power down & Analog input)
Normal operation
(DAC operation)
*: Don’t Care
Table 1. Operation Mode Settings
0
1
Mode
Register
Control
DAC
Full Power-down
NOT
available
Power
down
Auto Startup mode
No video input
Auto Startup mode
Video input (3)
2
Standby & mute
3
4
5
Standby
Mute1
Mute2
Normal operation
(DAC power down
& Analog input)
Normal operation
(DAC operation)
6
7
Audio
MCLK,
BICK,
LRCK
Not
needed
Video Output
Audio Bias
Level
Video
Signal
TVFB,
TVSB
VCRSB
Power
down
Hi-Z
Hi-Z
Pull-down
(2)
Active
Active
Available
Active
Active
Needed
Power
down
Not
needed
Active
Needed
Power
down
Active
Power
down
Active
(1)
Active
(4)
Hi-Z/
Active
Notes:
(1) TVOUTL/R are muted by VMUTE bit in the default state.
(2) Internally pulled down by 120kohm(typ) resistor.
(3) Video input to TVVIN or VCRVIN.
(4) VCRC outputs 0V for termination.
HD Video output does not work. (Hi-Z default)
Table 2. Status of each operation modes
MS0507-E-00
2006/05
- 20 -
ASAHI KASEI
[AK4706]
„ System Reset and Full Power-down Mode
The AK4706 should be reset once by bringing PDN pin = “L” upon power-up.
PDN pin: Power down pin
“H”: Normal operation
“L”: Device power down.
„ Auto Startup Mode
When the PDN pin is set to “H”, the AK4706 is in the auto startup mode. In this mode, all blocks except for the video
detection circuit are powered down. Once the video detection circuit detects video signal from TVVIN pin or VCRVIN
pin, the AK4706 goes to the stand-by mode (Both Fast Blanking and Slow Blanking are also fixed to VCR-TV
Loop-through) automatically and sends “H” pulse via INT pin. To exit the auto startup mode, set the AUTO bit to “0”.
The HD video outputs in the auto startup mode are disable at power-up. In this mode, HD video outputs are controlled as
shown in Table 3.
AUTO bit (00H D3): Auto startup bit (SD Video output)
“1”: Auto startup enable (default).
“0”: Auto startup disable (Manual startup).
HDAPW bit (0AH D5): Auto startup bit (HD Video output)
“1”: Auto startup enable.
“0”: Auto startup disable (Manual startup: default).
AUTO bit
0
0
1
1
HDAPW bit
0
1
0
1
HD Video output
Set by HDSW1/0, HDCP1/0 bit
Hi-Z
Hi-Z
Set by HDSW1/0, HDCP1/0 bit
after a video signal is detected.
Table 3. HD Video output status
The Figure 2 shows an example of the system timing at auto startup mode.
Auto startup enable
PDN pin
Low Power Mode
Low Power Mode
AUTO bit
HDAPW bit
Low Power Mode
“1”(defaoult)
“0” (default)
“1”
Clock, Data in
don’t care
TVVIN
don’t care
VCRVIN
don’t care
No Signal
Signal in
No Signal
Signal in
No Signal
Signal in
No Signal
don’t care
No Signal
TVVOUT,
VCRVOUT
Hi-Z
Active (loop-through)
Hi-Z
Active (loop-through)
Hi-Z
HD Video
OUTPUT
Hi-Z
Active
Hi-Z
Active
Hi-Z
Audio out (DC)
(GND)
Active (loop-through)
don’t care
Active (loop-through)
Figure 2.Auto startup mode sequence
MS0507-E-00
2006/05
- 21 -
ASAHI KASEI
[AK4706]
„ DAC Power-down Mode
The internal DAC block can be powered-down and switched to 1Vrms analog input mode. When DAPD bit =“1”, the
zero-cross detection and offset calibration does not work.
DAPD bit (00H D2): DAC power-down bit.
“1”: DAC power-down. Analog-input mode.
#52 pin: MCLK Æ Unused pin. This pin should be open.
#53 pin: BICK Æ DACR. Rch analog input.
#54 pin: SDTI Æ Unused pin. This pin should be open.
#55 pin: LRCK Æ DACL. Lch analog input.
“0”: DAC operation. (default)
„ Standby Mode
When the AUTO bit = MUTE bit = “0” and the STBY bit = “1”, the AK4706 is forced into TV-VCR loop through mode.
In this mode, the sources of TVOUTL/R and MONOOUT pins are fixed to VCRINL/R pins; the sources of VCROUTL/R
are fixed to TVINL/R pins respectively. The gain of volume#1 is fixed to 0dB. All register values themselves are NOT
changed by STBY bit = “1”.
STBY bit (00H D0): Standby bit.
“1”: Standby mode. (default)
“0”: Normal operation.
„ Mute Mode (Bias-off Mode. 00H: D1)
When the MUTE bit = “1”, the bias voltage on the audio output goes to GND level. Bringing MUTE bit to “0” changes
this bias voltage smoothly from GND to VP/2 by 2sec(typ.). This removes the huge click noise related the sudden change
of bias voltage at power-on. The change of MUTE bit from “1” to “0” also makes smooth transient from VP/2 to GND by
2sec(typ). This removes the huge click noise related the sudden change of bias voltage at power-off.
MUTE bit: Bias-off bit.
“1”: Set the audio bias to GND. (default)
“0”: Normal operation
„ Normal Operation Mode
To use the DAC or change analog switches, set the AUTO bit, DAPD bit, MUTE bit and STBY bit to “0”. The DAC is in
power-down mode until MCLK and LRCK are input. The AK4706 is in power-down mode until MCLK and LRCK are
input. The Figure 2 shows an example of the system timing at the power-down and power-up by PDN pin.
MS0507-E-00
2006/05
- 22 -
ASAHI KASEI
[AK4706]
„ Typical Operation Sequence
The Figure 3 shows an example of the system timing.
PDN pin
AUTO bit
MUTE bit
STBY bit
“Stand-by“
“Mute”
“1” (default)
“1” (default)
“0”
“0”
“1”
“1” (default)
“0”
Clock in
don’t care (2)
normal operation
Data in
don’t care
“0”
Audio data
GD
(1)
fixed to VCR in(Loop-through)
“1”
“0”
“1”
don’t care (2)
don’t care
“0”
GD (1)
D/A Out
(internal)
TV-Source
select
“Stand-by“
VCR in
VCR in
DAC
(default)
VCR in
TV out
VCR in
(3)
HD Video
Output
id
Hi-z
normal operation(4)
Hi-z
Figure 3. Typical operating sequence (except auto setup mode)
Notes:
(1) The analog output corresponding to the digital input has a group delay, GD.
(2) The external clocks (MCLK, BICK and LRCK) can be stopped in standby mode.
(3) Mute the analog outputs externally if click noise(3) adversely affects the system.
(4) The HDSW1/0, HDCP1/0 bits set HD video outputs.
MS0507-E-00
2006/05
- 23 -
ASAHI KASEI
[AK4706]
2. Audio Block
„ System Clock
The external clocks required to operate the DAC section of AK4706 are MCLK, LRCK and BICK. The master clock
(MCLK) corresponds to 256fs or 384fs. MCLK frequency is automatically detected, and the internal master clock
becomes 256fs. The MCLK should be synchronized with LRCK but the phase is not critical. Table 4 illustrates
corresponding clock frequencies. All external clocks (MCLK, BICK and LRCK) should always be present whenever the
DAC section of AK4706 is in the normal operating mode (STBY bit = “0” and DAPD bit = “0”). If these clocks are not
provided, the AK4706 may draw excess current because the device utilizes dynamically refreshed logic internally. The
DAC section of AK4706 should be reset by STBY bit = “0” after threse clocks are provided. If the external clocks are not
present, place the AK4706 in power-down mode (STBY bit = “1”). After exiting reset at power-up etc., the AK4706
remains in power-down mode until MCLK and LRCK are input.
LRCK
fs
32.0kHz
44.1kHz
48.0kHz
MCLK
256fs
384fs
8.1920MHz
12.2880MHz
11.2896MHz
16.9344MHz
12.2880MHz
18.4320MHz
Table 4. System clock example
BICK
64fs
2.0480MHz
2.8224MHz
3.0720MHz
„ Audio Serial Interface Format (00H: D5-D4)
Data is shifted in via the SDTI pin using BICK and LRCK inputs. The DIF0 and DIF1 bits can select four formats in serial
mode as shown in Table 5. In all modes, the serial data is MSB-first, 2’s compliment format and is latched on the rising
edge of BICK. Mode 2 can also be used for 16 MSB justified formats by zeroing the unused two LSBs.
Mode
0
1
2
DIF1
0
0
1
DIF0
0
1
0
3
1
1
SDTI Format
16bit LSB Justified
18bit LSB Justified
24bit MSB Justified
BICK
≥32fs
≥36fs
≥48fs
≥48fs or
2
24bit I S Compatible
32fs
Table 5. Audio Data Formats
MS0507-E-00
Figure
Figure 4
Figure 4
Figure 5
Figure 6
Default
2006/05
- 24 -
ASAHI KASEI
[AK4706]
LRCK
BICK
SDTI
Mode 0
Don’t care
15 14
0
Don’t care
15
0
Don’t care
15 14
0
15
0
15:MSB, 0:LSB
SDTI
Mode 1
Don’t care
17
16
14
17
16
14
17:MSB, 0:LSB
Lch Data
Rch Data
Figure 4. Mode 0,1 Timing
LRCK
BICK
SDTI
23 22
1
0
Don’t care
23 22
1
0
Don’t care
17
16
23:MSB, 0:LSB
Lch Data
Rch Data
Figure 5. Mode 2 Timing
LRCK
BICK
SDTI
23 22
1
0
Don’t care
23 22
1
0
Don’t care
17
23:MSB, 0:LSB
Lch Data
Rch Data
Figure 6. Mode 3 Timing
MS0507-E-00
2006/05
- 25 -
ASAHI KASEI
[AK4706]
„ De-emphasis filter (00H: D7-D6)
A digital de-emphasis filter is available for 32, 44.1 or 48kHz sampling rates (tc = 50/15µs) and is controlled by the
DEM0 and DEM1 bits.
DEM1
DEM0
Mode
0
0
44.1kHz
0
1
OFF
1
0
48kHz
1
1
32kHz
Table 6. De-emphasis filter control
default
„ Switch Control
The AK4706 has switch matrixes designed primarily for SCART routing. Those are controlled via the control register as
shown in Table 7, Table 8 and Table 9 (refer to the block diagram).
(01H: D1-D0)
TV1
TV0
Source of TVOUTL/R
0
0
DAC
0
1
VCRIN (default)
1
0
Mute
1
1
(Reserved)
Table 7. TVOUT Switch Configuration
(01H: D2-D0)
VOL
TV1
TV0
Source of MONOOUT
0
0
0
DAC (L+R)/2
Bypass the
0
0
1
DAC (L+R)/2
volume #1
0
1
0
DAC (L+R)/2
0
1
1
(Reserved)
Through the
1
0
0
DAC (L+R)/2
volume #1
1
0
1
VCRIN (L+R)/2
1
1
0
Mute
1
1
1
(Reserved)
Table 8. MONOOUT Switch Configuration
(01H: D5-D4)
VCR1
VCR0
Source of VCROUTL/R
0
0
DAC
0
1
TVIN (default)
1
0
Mute
1
1
Output of volume #1
Table 9. VCROUT Switch Configuration
MS0507-E-00
2006/05
- 26 -
ASAHI KASEI
[AK4706]
„ Volume Control #0, #2 (4-Level Volume)
The AK4706 has a 4-level volume control (Volume #0, #2) as shown in Table 10 and Table 11. The volume reflects the
change of register value immediately.
(03H: D4-D3)
DVOL1
0
0
1
DVOL0
0
1
0
1
1
(03H: D4-D3)
DVOL1
0
0
1
1
Volume #0 Gain
0dB
-6dB
+2.44dB
Output Level (Typ)
2Vrms (with 0dBFS input & volume #1=0dB.)
1Vrms (with 0dBFS input & volume #1=0dB.)
2.65Vrms (with 0dBFS input & volume #1=0dB.)
2Vrms (with –10dBFS input & volume #1=+6dB.
+4dB
Clips over –2.5dBFS digital input.)
Table 10. Volume #0 (at DAPD bit =”0”. DAC mode)
DVOL0
Volume #2 Gain
Output Level (Typ)
0
+6dB
2Vrms (with 1Vrms input & volume #1=0dB.)
1
0dB
1Vrms (with 1Vrms input & volume #1=0dB.)
0
(reserved)
1
(reserved)
Table 11. Volume #2 (at DAPD bit =”1”. analog input mode.)
MS0507-E-00
2006/05
- 27 -
ASAHI KASEI
[AK4706]
„ Volume Control #1 (Main Volume)
The AK4706 has main volume control (Volume #1) as shown in Table 12.
(02H: D5-D0)
L5
L4
L3
L2
L1
L0
1
0
0
0
1
0
1
0
0
0
0
1
1
0
0
0
0
0
0
1
1
1
1
1
…
…
…
…
…
…
0
0
0
0
0
1
0
0
0
0
0
0
Note: The output must not exceed 3Vrms.
Table 12. Volume #1
Gain
+6dB
+4dB
+2dB
0dB (default)
…
-60dB
Mute
When the MOD bit = “1”(default), changing levels don’t have pop noise. MDT1-0 bits select the transition time (see
Table 13). When the new gain value 1EH(-2dB) is written to gain resistor while the actual (stable) gain is 1FH(0dB), the
gain changes to 1EH(-2dB) within the transition time selected by MDT1-0 bits. The AK4706 compares the actual gain to
the value of gain register after finishing the transition time, and re-changes the actual gain to new resister value within the
transition time if the register value is different from the actual gain when compared. When the MOD bit = “0” then there
is no transition time and the gain changes immediately. This change may cause a click noise.
WR
[Gain=1EH]
Gain Register
WR
[Gain=1DH]
1FH
WR
[Gain=1CH]
1DH
1EH
compare
Actual Gain
1FH (to 1EH)
1CH
compare
1EH
(to 1DH)
compare
(to 1CH)
1CH
1DH
Transition Time (256/fs to 2048/fs. pop free.)
Figure 7. Volume Change Operation (MOD bit = “1”)
MDT1
0
0
1
1
MDT0
Transition Time
0
256/fs
1
512/fs
0
1024/fs
1
2048/fs (default)
Table 13. Volume Transition Time
MS0507-E-00
2006/05
- 28 -
ASAHI KASEI
[AK4706]
3. Video Block
„ Video Switch Control
The AK4706 has switches for TV, VCR and RF modulator. Each switches can be controlled via registers independently.
When AUTO bit = “1” or STBY bit = “1”, these switch setting are ignored and set to fixed configuration (loop-through
mode). Please refer the auto setup mode and standby mode.
(04H: D2-D0)
VTV2-0
bit
000
Mode
Shutdown
Encoder CVBS+RGB
or Encoder YPbPr
001
Encoder Y/C 1
010
Encoder Y/C 2
011
VCR (default)
100
TV CVBS
101
(reserved)
(reserved)
110
111
Source of
TVVOUT pin
(Hi-Z)
ENCV pin
(Encoder CVBS
or Y)
ENCV pin
(Encoder Y)
ENCY pin
(Encoder Y)
VCRVIN pin
(VCR CVBS
or Y)
TVVIN pin
(TV CVBS)
-
Source of
TVRC pin
(Hi-Z)
ENCRC pin
(Encoder Red,C
or Pb)
ENCRC pin
(Encoder C)
ENCC pin
(Encoder C)
VCRRC pin
(VCR Red,C
or Pb)
Source of
TVG pin
(Hi-Z)
ENCG pin
(Encoder Green
or Y)
Source of
TVB pin
(Hi-Z)
ENCB pin
(Encoder Blue
or Pr)
(Hi-Z)
(Hi-Z)
(Hi-Z)
(Hi-Z)
VCRG pin
(VCR Green
or Y)
VCRB pin
(VCR Blue
or Pr)
(Hi-Z)
(Hi-Z)
(Hi-Z)
-
-
(Refer Note 23, Note 24)
Table 14. TV video output
(04H: D5-D3)
Mode
VVCR2-0 bit
Shutdown
000
Encoder CVBS or Y/C 1
001
Encoder CVBS or Y/C 2
010
TV CVBS (default)
011
VCR
100
(reserved)
(reserved)
(reserved)
101
110
111
Source of
VCRVOUT pin
(Hi-Z)
ENCV pin
(Encoder CVBS
or Y)
ENCY pin
(Encoder CVBS
or Y)
TVVIN pin
(TV CVBS)
VCRVIN pin
(VCR CVBS)
-
Source of
VCRC pin
(Hi-Z)
ENCRC pin
(Encoder C)
ENCC pin
(Encoder C)
(Hi-Z)
VCRRC pin
(VCR C)
(Refer Note 23)
Table 15. VCR video output
MS0507-E-00
2006/05
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ASAHI KASEI
[AK4706]
(04H: D7-D6)
VRF1-0
bit
Source of
RFV pin
ENCV pin.
Encoder CVBS1
00
(Encoder CVBS)
ENCG pin.
Encoder CVBS2
01
(Encoder CVBS)
(Note 24)
VCRVIN pin.
VCR (default)
10
(VCR CVBS)
Shutdown
11
(Hi-Z)
Table 16. RF video output
Mode
Note 23. When input the video signal via ENCRC pin or VCRRC pin, set CLAMP1-0 bits respectively.
Note 24. When VTV2-0 bit =“001”, TVG bit =“1” and VRF1-0 bit =“01”, RFV pin output is same
as TVG pin output (Encoder G).
„ Video Output Control (05H: D6-D0)
Each video outputs can be set to Hi-Z individually via control registers. These setting are ignored when the AUTO bit =
“1”. When the CIO bit = “1”, the VCRC pin outputs 0V even if the VCRC bit = “0”. When the CIO bit = “0”, the VCRC
pin follows the setting of VCRC bit. Please refer the “Red/Chroma Bi-directional Control for VCR SCART”.
TVV:
TVR:
TVG:
TVB:
VCRV:
VCRC:
TVFB:
TVVOUT output control
TVRCOUT output control
TVGOUT output control
TVBOUT output control
VCRVOUT output control
VCRC output control
TVFB output control
0: Hi-Z (default)
1: Active.
„ Red/Chroma Bi-directional Control for VCR SCART (05H: D7, D5)
The AK4706 supports the bi-directional Red/Chroma signal on the VCR SCART.
(CIO bit &
VCRC bit)
#15 pin
75
VCRC
pin
VCRRC
pin
VCR SCART
0.1u
(AK4706)
Figure 8. Red/Chroma Bi-directional Control
MS0507-E-00
2006/05
- 30 -
ASAHI KASEI
[AK4706]
CIO
0
0
1
1
VCRC
State of VCRC pin
0
Hi-Z (default)
1
Active
0
Connected to GND
1
Connected to GND
Table 17 Red/Chroma Bi-directional Control
„ RGB Video Gain Control (06H: D1-D0)
VVOL1-0 bits set the RGB video gain.
VVOL1
0
0
1
1
VVOL0
0
1
0
1
Gain
Output level (Typ. @Input=0.7Vpp)
+6dB
1.4Vpp (default)
+7.2dB
1.6Vpp
+8.2dB
1.8Vpp
+9.1dB
2.0Vpp
Table 18. RGB video gain control
„ Clamp and DC-restore circuit control (06H: D7-D2, 0AH: D3)
Each CVBS and Y input has the sync tip clamp circuit. The DC-restore circuit has two clamp voltages 0.7V(typ) and
2.2V(typ) to support both RGB and YPbPr signal. They correspond to 0.35V(typ) and 1.1V(typ) at the SCART connector
when matched by 75ohm resistors. The CLAMP1, CLAMP0 and CLAMPB bits select the input circuit for ENCRC pin
(Encoder Red/Chroma), ENCB pin (Encoder Blue), VCRRC pin (VCR Red/Chroma) and VCRB pin (VCR Blue)
respectively. VCLP1-0 bits select the sync source of DC- restore circuit.
CLAMPB
0
0
1
1
CLAMPB
0
0
1
1
CLAMP0
0
1
0
1
CLAMP1
0
1
0
1
VCRRC Input Circuit
VCRB Input Circuit
VCRG Input Circuit
DC restore (0.7V)
DC restore (0.7V)
DC restore (0.7V)
Biased
DC restore (0.7V)
DC restore (0.7V)
DC restore (2.2V)
DC restore (2.2V)
Sync Tip Clamp (0.7V)
(reserved)
(reserved)
(reserved)
Table 19. DC-restore control for VCR Input
ENCRC Input Circuit
ENCB Input Circuit
DC restore (0.7V)
DC restore (0.7V)
Biased
DC restore (0.7V)
DC restore (2.2V)
DC restore (2.2V)
(reserved)
(reserved)
Table 20. DC-restore control for Encoder Input
CLAMP2
0
1
ENCG Input Circuit
DC restore (0.7V)
Sync tip clamp (0.7V)
note
for RGB
for YPbPr
note
for RGB
for Y/C
for YPbPr
note
for RGB
for Y/C
for YPbPr
default
default
default
Note: When the VTV2-0 bits = “001”, TVG bit =”1” and VCLP2-0 bits = “011”, Sync tip is selected even if the CLAMP2
bit = “0”.
Table 21. DC-restore control for Encoder Green/Y Input
MS0507-E-00
2006/05
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ASAHI KASEI
[AK4706]
VCLP2-0: DC restore source control
VCLP2
0
0
0
0
VCLP1
0
0
1
1
VCLP0
0
1
0
1
Sync Source of DC Restore
ENCV (default)
ENCY
VCRVIN
ENCG
1
0
0
VCRG
1
0
1
(reserved)
1
1
0
(reserved)
1
1
1
(reserved)
Note: When the AUTO bit = “1”, the source is fixed to VCRVIN.
Table 22. DC-restore source control
„ HD Video Control (0AH: D7-D6, D1-D0)
FLY1/0, FLPB1/0, FLPR1/0 bits and HDSW1/0, HDCP1/0 bits set the HD video switch and filter response.
HDSW1
HDSW0
0
0
0
0
0
0
0
1
1
0
1(default)
1(default)
HDCP1
HDCP0
HD YPbPr – RGB Control
YPbPr.
ENCY2 = 0.7V Clamp,
0(default)
0(default)
ENCPB = 2.2V DC-restore,
/1
ENCPR = 2.2V DC-restore.
(ENCY2= Sync Source only for ENCPB, ENCPR)
RGB.
ENCY2 = 0.7V Clamp,
1
0
ENCPB = 0.7V DC-restore,
ENCPR = 0.7V DC-restore.
(ENCY2= Sync Source only for ENCPB, ENCPR)
RGB.
ENCY2 = 0.7V DC-restore,
1
1
ENCPB = 0.7V DC-restore,
ENCPR = 0.7V DC-restore.
Sync Source = ENCV
ENCG,
ENCB,
*
*
ENCR
Follow CLAMPB, 2, 1
VCRG,
VCRB,
*
*
VCRRC
Follow CLAMPB, 0.
VCRG follow VCRRC circuit.
*
*
Hi-Z
Table 23. HD Video Switch Control (3ch common)
Input
Output
FLY1/ FLPB1/FLPR1 bit
FLY0/ FLPB0/FLPR0 bit
LFP response
0
0
6MHz LPF (default)
0
1
12MHz LPF
1
0
30MHz LPF
1
1
(Reserved)
Table 24. HD Video Filter Control (3ch independent)
MS0507-E-00
2006/05
- 32 -
ASAHI KASEI
[AK4706]
4. Blanking Control, S1/S2 DC Control
When the SDC bit= “0”, the AK4706 supports Fast Blanking signals and Slow Blanking (Function Switching) signals for
TV/VCR SCART. When the SDC bit= “1”, the AK4706 supports S1/S2 mode.
SDC bit: SCART-S1/S2 Control
0: SCART Fast/Slow Blanking Mode
1: S1/S2 Mode
„ Input/Output Control for Fast/Slow Blanking
FB1-0: TV Fast Blanking output control (0AH: D4, 07H: D1-D0)
Input
FB1 bit
0
0
1
1
SDC bit
0
0
0
0
1
1
1
1
FB0 bit
0
1
0
1
Output
TVFB pin Output Level
<0.4V (default)
4V<
Same as VCR FB input (4V/0V)
(Reserved)
0
0
<0.4V
0
1
1.55V to 2.4V
1
0
Same as VCR FB input (5V/2.2V/0V)
1
1
3.5V<
(Note: Load resistance is min.150ohm for SDC bit =”0”, min.100kohm for SDC bit =”1”)
Table 25. TV Fast Blanking output
SBT1-0: TV Slow Blanking output control (0AH: D4, 07H: D3-D2)
SDC bit
0
0
0
0
Input
SBT1
bit
0
0
1
1
Output
SBT0
bit
0
1
0
1
TVSB pin Output Level
<2V (default)
5V to 7V
(Reserved)
10V<
1
1
1
1
0
0
<0.4V
0
1
1.55V to 2.4V
1
0
(Reserved)
1
1
3.5V<
(Note: Load resistance is min.10kohm for SDC bit =”0”, min.100kohm for SDC bit =”1”)
Table 26. TV Slow Blanking output
SBV1-0: VCR Slow Blanking output control (07H: D5-D4)
SBV1
0
0
1
1
SBV0
0
1
0
1
VCRSB pin Output Level
<2V (default)
5V to 7V
(Reserved)
10V<
(Note: Load resistance is min.10kohm)
Table 27. VCR Slow Blanking output
MS0507-E-00
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ASAHI KASEI
[AK4706]
SBIO1-0: TV/VCR Slow Blanking I/O control (07H: D7-D6)
SBIO1
SBIO0
0
0
0
1
1
0
1
1
VCRSB pin Direction
TVSB pin Direction
Output
Output
(Controlled by SBV1,0)
(Controlled by SBT1,0)
(Reserved)
(Reserved)
Input
Output
(Stored in SVCR1,0)
(Controlled by SBT1,0)
Input
Output
(Stored in SVCR1,0)
(Same output as VCR SB)
Table 28. TV/VCR Slow Blanking I/O control
MS0507-E-00
(default)
2006/05
- 34 -
ASAHI KASEI
[AK4706]
5. Monitor Options and INT function
„ Monitor Options (08H: D7, D5, D2-D0)
The AK4706 has several detection functions. SVCR1-0 bits, FVCR bit, VCMON bit and TVMON bit reflect the input
DC level of VCR slow blanking, the input DC level of VCR fast blanking and signals input to TVVIN or VCRVIN pins.
SDC bit: SCART-S1/S2 Control
0: SCART Fast/Slow Blanking Mode
1: S1/S2 Mode
SVCR1-0 bit: VCR Slow blanking status monitor
SVCR1-0 bits reflect the voltage at VCRSB pin only when the VCRSB pin is in the input mode.
When the VCRSB is in the output mode, SVCR1-0 hold previous value.
SDC bit
0
0
0
0
Input
VCRSB pin input level
< 2V
4.5 to 7V
(Reserved)
9.5<
Output
SVCR1 bit
0
0
1
1
SVCR0 bit
0
1
0
1
1
< 0.4V
0
0
1
1.4 to 2.4V
0
1
1
(Reserved)
1
0
1
3.5V<
1
1
Note: When SDC bit =”0”, VCRSB pin is connected to a Internal pull-down resistor([email protected]).
Table 29. VCR Slow Blanking monitor
FVCR: VCR Fast blanking input level monitor
This bit is enabled when TVFB bit = “1”.
SDC bit
0
0
0
0
Input
VCRFB pin input level
<0.4V
1 V<
(Reserved)
(Reserved)
Output
FVCR1 bit
0
0
0
0
FVCR0 bit
0
1
0
0
1
1
1
1
< 0.4V
1.4 to 2.4V
(Reserved)
3.5V<
0
0
1
1
0
1
0
1
Table 30. VCR Fast Blanking monitor (Typical threshold is 0.7V)
MS0507-E-00
2006/05
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ASAHI KASEI
[AK4706]
VCMON: VCRVIN pin video input monitor (MCOMN bit =”1”),
TVVIN pin or VCRVIN pin video input monitor (MCOMN bit = “0”)
0: No video signal detected.
1: Detects video signal.
TVMON: TVVIN pin video input monitor (active when MCOMN bit = “1”)
0: No video signal detected.
1: Detects video signal.
MCOMN
(09H D7)
TVVIN signal*
VCRVIN signal*
TVMON
(08H D4)
VCMON
(08H D3)
0
0
0
0
0
0
1
1
0
1
0
1
0
0
0
0
0
1
1
1
1
1
1
1
0
0
1
1
0
1
0
1
0
0
1
1
0
1
0
1
*: “0” is No signal.
“1” is Signal input
Table 31. TV/VCR Monitor Function
MS0507-E-00
2006/05
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ASAHI KASEI
[AK4706]
„ INT Function and Mask Options (09H: D7, D4-D1)
Changes of the 08H status can be monitored via the INT pin. The INT pin is the open drain output and goes “L” for
2µsec(typ.) when the status of 08H is changed. This pin should be connected to VD2 (typ. 5V) through 10kohm resistor.
MTV bit, MVC bit, MCOMN bit, MFVCR bit and MSVCR bit control the reflection of the status change of these
monitors onto the INT pin from report to prevent to masks each monitor.
AK4706
VD2
R=10kΩ
INT
uP
Figure 9. INT pin
MVC: VCMON Mask. Refer Table 33
MTV: TVMON Mask. Refer Table 32
MCOMN: Refer Table 31
AUTO
(00H D3)
0
0
0
0
1
1
1
1
AUTO
(00H D3)
0
0
0
0
1
1
1
1
TVMON
(08H D4)
No Change
No Change
Change
Change
MTV
(09H D4)
0
1
0
1
No Change
0
No Change
1
Change
0
Change
1
Table 32. TV Monitor Mask
VCMON
(08H D3)
No Change
No Change
Change
Change
MVC
(09H D3)
0
1
0
1
No Change
0
No Change
1
Change
0
Change
1
Table 33. VCR Monitor Mask
INT
Hi-Z
Hi-Z
Generates “L” Pulse
Hi-Z
Hi-Z
Hi-Z
Generates “L” Pulse
Generates “L” Pulse
INT
Hi-Z
Hi-Z
Generates “L” Pulse
Hi-Z
Hi-Z
Hi-Z
Generates “L” Pulse
Generates “L” Pulse
MFVCR: FVCR Monitor mask.
0: Change of MFVCR is reflected to INT pin. (default)
1: Change of MFVCR is NOT reflected to INT pin.
MSVCR: SVCR1-0 Monitor mask
0: Change of SVCR1-0 is reflected to INT pin. (default)
1: Change of SVCR1-0 is NOT reflected to INT pin.
MS0507-E-00
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ASAHI KASEI
[AK4706]
6. Control Interface
I2C-bus Control Mode
1. WRITE Operations
Figure 10 shows the data transfer sequence in I2C-bus mode. All commands are preceded by a START condition. A
HIGH to LOW transition on the SDA line while SCL is HIGH indicates a START condition (Figure 16). After the
START condition, a slave address is sent. This address is 7 bits long followed by an eighth bit which is a data direction bit
(R/W). The most significant seven bits of the slave address are fixed as “0010001”. If the slave address match that of the
AK4706, the AK4706 generates the acknowledge and the operation is executed. The master must generate the
acknowledge-related clock pulse and release the SDA line (HIGH) during the acknowledge clock pulse (Figure 17). A
“1” for R/W bit indicates that the read operation is to be executed. A “0” indicates that the write operation is to be
executed. The second byte consists of the address for control registers of the AK4706. The format is MSB first, and those
most significant 3-bits are fixed to zeros (Figure 12). The data after the second byte contain control data. The format is
MSB first, 8bits (Figure 13). The AK4706 generates an acknowledge after each byte has been received. A data transfer is
always terminated by a STOP condition generated by the master. A LOW to HIGH transition on the SDA line while SCL
is HIGH defines a STOP condition (Figure 16).
The AK4706 can execute multiple one byte write operations in a sequence. After receipt of the third byte, the AK4706
generates an acknowledge, and awaits the next data again. The master can transmit more than one byte instead of
terminating the write cycle after the first data byte is transferred. After the receipt of each data, the internal address
counter is incremented by one, and the next data is taken into next address automatically. If the address exceeds 0BH prior
to generating the stop condition, the address counter will “roll over” to 00H and the previous data will be overwritten.
The data on the SDA line must be stable during the HIGH period of the clock. The HIGH or LOW state of the data line
can only change when the clock signal on the SCL line is LOW (Figure 18) except for the START and the STOP
condition.
S
T
A
R
T
SDA
S
S
T
O
P
R/W= “0”
Slave
Address
Sub
Address(n)
A
C
K
Data(n)
Data(n+1)
A
C
K
A
C
K
Data(n+x)
A
C
K
A
C
K
P
A
C
K
Figure 10. Data transfer sequence at the I2C-bus mode
0
0
1
0
0
0
1
R/W
A2
A1
A0
D2
D1
D0
Figure 11. The first byte
0
0
0
A4
A3
Figure 12. The second byte
D7
D6
D5
D4
D3
Figure 13. Byte structure after the second byte
MS0507-E-00
2006/05
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ASAHI KASEI
[AK4706]
2. READ Operations
Set R/W bit = “1” for READ operations. After transmission of data, the master can read the next address’s data by
generating an acknowledge instead of terminating the write cycle after the receipt the first data word. After the receipt of
each data, the internal address counter is incremented by one, and the next data is taken into next address automatically. If
the address exceeds 09H prior to generating the stop condition, the address counter will “roll over” to 00H and the
previous data will be overwritten.
The AK4706 supports two basic read operations: CURRENT ADDRESS READ and RANDOM READ.
2-1. CURRENT ADDRESS READ
The AK4706 contains an internal address counter that maintains the address of the last word accessed, incremented by
one. Therefore, if the last access (either a read or write) was to address n, the next CURRENT READ operation would
access data from the address n+1. After receipt of the slave address with R/W bit set to “1”, the AK4706 generates an
acknowledge, transmits 1byte data which address is set by the internal address counter and increments the internal address
counter by 1. If the master does not generate an acknowledge to the data but generate the stop condition, the AK4706
discontinues transmission
S
T
A
R
T
SDA
S
S
T
O
P
R/W= “1”
Slave
Address
Data(n+1)
Data(n)
A
C
K
A
C
K
Data(n+2)
A
C
K
Data(n+x)
A
C
K
A
C
K
P
A
C
K
Figure 14. CURRENT ADDRESS READ
2-2. RANDOM READ
Random read operation allows the master to access any memory location at random. Prior to issuing the slave address
with the R/W bit set to “1”, the master must first perform a “dummy” write operation. The master issues a start condition,
slave address(R/W=“0”) and then the register address to read. After the register’s address is acknowledge, the master
immediately reissues the start condition and the slave address with the R/W bit set to “1”. Then the AK4706 generates an
acknowledge, 1-byte data and increments the internal address counter by 1. If the master does not generate an
acknowledge to the data but generate the stop condition, the AK4706 discontinues transmission.
S
T
A
R
T
SDA
S
S
T
A
R
T
R/W= “0”
Sub
Address(n)
Slave
Address
A
C
K
S
A
C
K
S
T
O
P
R/W= “1”
Slave
Address
Data(n)
A
C
K
Data(n+1)
A
C
K
Data(n+x)
A
C
K
A
C
K
P
A
C
K
Figure 15. RANDOM ADDRESS READ
MS0507-E-00
2006/05
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ASAHI KASEI
[AK4706]
SDA
SCL
S
P
start condition
stop condition
Figure 16. START and STOP conditions
DATA
OUTPUT BY
TRANSMITTER
not acknowledge
DATA
OUTPUT BY
RECEIVER
acknowledge
SCL FROM
MASTER
2
1
8
9
S
clock pulse for
acknowledgement
START
CONDITION
Figure 17. Acknowledge on the I2C-bus
SDA
SCL
data line
stable;
data valid
change
of data
allowed
Figure 18. Bit transfer on the I2C-bus
MS0507-E-00
2006/05
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ASAHI KASEI
[AK4706]
„ Register Map
Addr
Register Name
D7
D6
D5
D4
D3
D2
D1
D0
00H
Control
DEM1
DEM0
DIF1
DIF0
AUTO
DAPD
MUTE
STBY
01H
Switch
VMUTE
0
VCR1
VCR0
MONO
VOL
TV1
TV0
02H
Main volume
0
0
L5
L4
L3
L2
L1
L0
03H
Zerocross
0
VMONO
1
DVOL1
DVOL0
MOD
MDT1
MDT0
04H
Video switch
VRF1
VRF0
VVCR2
VVCR1
VVCR0
VTV2
VTV1
VTV0
05H
Video output enable
CIO
TVFB
VCRC
VCRV
TVB
TVG
TVR
TVV
06H
Video volume/clamp
CLAMPB
VCLP1
VCLP0
CLAMP2
CLAMP1
CLAMP0
VVOL1
VVOL0
07H
S/F Blanking control
SBIO1
SBIO0
SBV1
SBV0
SBT1
SBT0
FB1
FB0
FVCR1
TVMON
VCMON
FVCR0
SVCR1
SVCR0
MTV
MVC
MFVCR
MSVCR
0
08H
S/F Blanking monitor
09H
Monitor mask
0AH
HD switch
0BH
HD filter
0
0
MCOMN
0
HDCP1
HDCP0
HDAPW
SDC
VCLP2
0
HDSW1
HDSW0
0
0
FLPR1
FLPR0
FLPB1
FLPB0
FLY1
FLY0
When the PDN pin goes “L”, the registers are initialized to their default values.
While the PDN pin =“H”, all registers can be accessed.
Do not write any data to the register over 0BH.
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ASAHI KASEI
[AK4706]
„ Register Definitions
Addr
Register Name
00H
Control
D7
D6
D5
D4
DEM1
DEM0
DIF1
DIF0
R/W
default
D3
D2
D1
D0
AUTO
DAPD
MUTE
STBY
1
0
1
1
R/W
0
1
1
1
STBY: Standby control
0: Normal Operation
1: Standby Mode (default)
DAC: powered down and timings are reset.
Gain of Volume#1: fixed to 0dB
Source of TVOUT: fixed to VCRIN
Source of VCROUT: fixed to TVIN
Source of MONOOUT: fixed to VCRIN
Source of TVVOUT: fixed to VCRVIN (or Hi-Z)
Source of TVRC: fixed to VCRRC (or Hi-Z)
Source of TVG: fixed to VCRG (or Hi-Z)
Source of TVB: fixed to VCRB (or Hi-Z)
Source of TVFB: fixed to VCRFB (or Hi-Z)
Source of TVSB: fixed to VCRSB
Source of VCRVOUT: fixed to TVVIN (or Hi-Z)
Source of VCRC: fixed to Hi-Z or VSS (controlled by CIO bit)
MUTE: Audio output control
0: Normal operation
1: All Audio outputs to GND (default)
DAPD: DAC power down control
0: Normal operation (default).
1: DAC power down.
When DAPD bit = “1”, the soft transition for volume does not work.
AUTO: Auto startup bit
0: Auto startup disable (Manual startup).
1: Auto startup enable (default).
When the SBIO1bit = “1”(default= “0”), the change of AUTO bit may cause a “L” pulse on INT pin.
DIF1-0: Audio data interface format control
00: 16bit LSB Justified
01: 18bit LSB Justified
10: 24bit MSB Justified
11: 24bit I2S Compatible (default)
DEM1-0: De-emphasis Response Control
00: 44.1kHz
01: off (default)
10: 48kHz
11: 32kHz
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ASAHI KASEI
Addr
01H
Register Name
Switch
[AK4706]
D7
D6
D5
D4
VMUTE
0
VCR1
VCR0
R/W
default
D3
D2
D1
D0
MONO
VOL
TV1
TV0
R/W
1
0
0
1
0
1
0
1
TV1-0: TVOUTL/R pins source switch
00: DAC
01: VCRINL/R pins (default)
10: MUTE
11: (Reserved)
VOL: MONOOUT pin source switch
0: Bypass the volume (fixed to DAC out)
1: Through the volume (default)
MONO: Mono select for TVOUTL/R pins
0: Stereo. (default)
1: Mono. (L+R)/2
VCR1-0: VCROUTL/R pins source switch
00: DAC
01: TVINL/R pins (default)
10: MUTE
11: Volume #1 output
VMUTE: Mute switch for volume #1
0: Normal operation
1: Mute the volume #1 (default)
Addr
Register Name
02H
Main volume
D7
D6
D5
D4
D3
D2
D1
D0
0
0
L5
L4
L3
L2
L1
L0
1
1
1
1
R/W
Default
R/W
0
0
0
1
L5-0: Volume #1 control
Those registers control both Lch and Rch of Volume #1.
111111 to 100011: (Reserved)
100010: Volume gain = +6dB
100001: Volume gain = +4dB
100000: Volume gain = +2dB
011111: Volume gain = +0dB (default)
011110: Volume gain = -2dB
...
000011: Volume gain = -56dB
000010: Volume gain = -58dB
000001: Volume gain = -60dB
000000: Volume gain = Mute
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ASAHI KASEI
Addr
Register Name
03H
Zerocross
[AK4706]
D7
D6
D5
D4
D3
D2
D1
D0
0
VMONO
1
DVOL1
DVOL0
MOD
MDT1
MDT0
0
1
1
1
R/W
Default
R/W
0
0
1
0
MDT1-0: The control of volume transition time (typ)
00:
256/fs
01:
512/fs
10:
1024/fs
11:
2048/fs (default)
MOD: Soft transition enable for volume #1 control
0: Disable.
The volume value changes immediately without soft transition.
1: Enable (default)
The volume value changes with soft transition.
This function is disabled when STBY bit or DAPD bit = “1”.
DVOL1-0: Volume #0/Volume #2 control.
Refer the Table 10 and Table 11
VMONO: Mono select for VCROUTL/R pins
0: Stereo. (default)
1: Mono. (L+R)/2
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ASAHI KASEI
Addr
Register Name
04H
Video switch
R/W
Default
[AK4706]
D7
D6
D5
D4
VRF1
VRF0
VVCR2
VVCR1
D3
D2
D1
D0
VVCR0
VTV2
VTV1
VTV0
R/W
1
0
0
1
1
1
0
0
VTV2-0: Selector for TV video output
Refer the Table 14.
VVCR2-0: Selector for VCR video output
Refer the Table 15
VRF1-0: Selector for RFV pin output
Refer the Table 16.
Addr
Register Name
D7
D6
D5
D4
D3
D2
D1
D0
05H
Output enable
CIO
TVFB
VCRC
VCRV
TVB
TVG
TVR
TVV
0
0
0
0
R/W
Default
R/W
0
0
0
0
TVV: TVVOUT output control
TVR: TVRCOUT output control
TVG: TVGOUT output control
TVB: TVBOUT output control
VCRV: VCRVOUT output control
VCRC: VCRC output control (refer the Table 17)
TVFB: TVFB output control
0: Hi-Z (default)
1: Active.
When the CIO pin = “1”, the VCRC pin is connected to GND even if VCRC= “0”.
When the CIO pin = “0”, the VCRC pin follows the setting of VCRC bit.
CIO: VCRC pin I/O control
Refer the Table 17.
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ASAHI KASEI
[AK4706]
Addr
Register Name
D7
D6
D5
D4
D3
D2
D1
D0
06H
Video volume
CLAMPB
VCLP1
VCLP0
CLAMP2
CLAMP1
CLAMP0
VVOL1
VVOL0
0
1
0
0
R/W
Default
R/W
0
0
0
0
VVOL1-0: RGB video gain control
00: +6dB (default)
01: +7.2dB
10: +8.2dB
11: +9.1dB
CLAMPB, CLAMP2-0: Clamp control.
Refer the Table 19, Table 20 and Table 21.
VCLP1-0: DC restore source control
00: ENCV pin (default)
01: ENCY pin
10: VCRVIN pin
11: (Reserved)
When the AUTO bit = “1”, the source is fixed to VCRVIN pin.
Addr
Register Name
07H
S/F Blanking
R/W
Default
D7
D6
D5
D4
D3
D2
D1
D0
SBIO1
SBIO0
SBV1
SBV0
SBT1
SBT0
FB1
FB0
0
0
0
0
R/W
0
0
0
0
FB1-0: TV Fast Blanking output control (for TVFB pin)
00: 0V (default)
01: 4V
10: follow VCR FB input (4V/0V)
11: (Reserved)
SBT1-0: TV Slow Blanking output control (for TVSB pin. Load resistance is min.10kohm.)
00: <2V (default)
01: 5V to 7V
10: (Reserved)
11: 10V<
SBV1-0: VCR Slow Blanking output control (for VCRSB pin. Load resistance is min.10kohm)
00: <2V (default)
01: 5V to 7V
10: (Reserved)
11: 10V<
SBIO1-0: TV/VCR Slow Blanking I/O control (refer the Table 28)
Addr
08H
Register Name
D7
D6
D5
D4
D3
D2
D1
D0
Monitor
0
0
FVCR1
TVMON
VCMON
FVCR0
SVCR1
SVCR0
R/W
Default
0
0
0
0
0
0
0
READ
0
SVCR1-0, FVCR1-0: VCR fast blanking/slow blanking monitor
Refer Table 29, Table 30.
VCMON, TVMON: VCR/TV video input monitor
Refer Table 31.
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ASAHI KASEI
Addr
Register Name
09H
Monitor mask
R/W
default
[AK4706]
D7
D6
D5
D4
D3
D2
D1
D0
MCOMN
0
0
MTV
MVC
MFVCR
MSVCR
0
1
0
0
0
R/W
0
0
0
0
MSVCR: SVCR1-0 Monitor mask.
0: The INT pin reflects the change of SVCR1-0 bits. (default)
1: The INT pin does not reflect the change of SVCR1-0 bit.
MFVCR: FVCR Monitor mask.
0: The INT pin reflects the change of MFVCR bit. (default)
1: The INT pin does not reflect the change of MFVCR bit.
MVC, MTV: VCR/TV monitor mask
Refer the Table 32, Table 33.
MCOMN: Monitor mask option
Refer Table 31.
Addr
Register Name
0AH
HD switch
R/W
default
D7
D6
D5
D4
D3
D2
D1
D0
HDCP1
HDCP0
HDAPW
SDC
VCLP2
0
HDSW1
HDSW0
0
0
0
0
0
0
1
1
R/W
HDSW1-0, HDCP1-0: HD video switch.
Refer Table 23.
HDAPW: auto startup bit (HD Video output)
1: Auto startup enable.
0: Auto startup disable (Manual startup: default).
SDC: SCART-S1/S2 DC Control
Refer Table 25, Table 26 Table 29 and Table 30.
VCLP2: DC restore source control
Refer Table 22
Addr
Register Name
0BH
HD filter
R/W
default
D7
D6
D5
D4
D3
D2
D1
D0
0
0
FLPR1
FLPR0
FLPB1
FLPB0
FLY1
FLY0
0
0
0
R/W
0
0
0
0
0
FLY1-0, FLPB1-0, FLPR1-0: HD Video Filter Control
Refer Table 24.
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ASAHI KASEI
[AK4706]
SYSTEM DESIGN
Video 5V
Audio 5V
10k
RF Modulator
0.1u
+ 10u
+ 10u
+
10u
0.1u
5 RFV
6 VCRVOUT
75
7 TVFB
75
10u
0.1u
+
8 VCRC
AK4706
9 VVSS2
10 TVVOUT
11 VVD2
Video 5V
75
31 VCRG
30 VCRRC
29 VCRFB
300
300
75
75
75
75
75
75
75
75
75
75
75
75
75
75
Digital Ground
300
INT 33
0.1u
27 TVVIN
28 VCRVIN
0.1u
0.1u
26 ENCY
0.1u
25 ENCV
0.1u
23 ENCRC
24 ENCC
0.1u
0.1u
21 ENCB
22 ENCG
0.1u
0.1u
0.1u
20 ENCPB
19 ENCPR
0.1u
17 VVD1
0.1u
10k
10u
+
0.1u
16 REFI
18 ENCY2
15 VVSS1
VIDEO
encoder
MPEG
decoder
Micro
controller
12 TVRC
75 13 TVG
75
14 TVB
300
VCR SCART
75
Analog 12V
TV SCART
VD1 50
3 HDPB
4 VVD3
75
VSS2 49
VD2 51
MCLK 52
SDTI 54
SCL 56
LRCK 55
SDA 57
PDN 58
NC 60
NC 62
BICK 53
+
PVCOM 47
0.1u
10u +
DVCOM 46
10u +
0.1u
VP 45
+ 10u
300
MONOOUT 44
+ 10u
TVOUTL 43
220k
+ 10u
TVOUTR 42
220k
+ 10u
VCROUTL 41
220k
+ 10u
VCROUTR 40
220k
300 0.1u
TVINL 39
300 0.1u
TVINR 38
300 0.1u
VCRINL 37
300 0.1u
VCRINR 36
400
TVSB 35
400
VCRSB 34
2 HDPR
75
10u
32 VCRB
75
0.1u
VSS1 48
0.1u
75
1 HDY
0.1u
Pb/B out
VVSS4 59
75
VVD4 61
NC 64
Y/G out
Pr/R out
VVSS3 63
0.1u
Analog Ground
Figure 19. Typical Connection Diagram
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ASAHI KASEI
[AK4706]
„ Grounding and Power Supply Decoupling
VD1-2, VP, VVD1-4, VSS1-2 and VVSS1-4 should be supplied from analog supply unit with low impedance and be
separated from system digital supply. An electrolytic capacitor 10µF parallel with a 0.1µF ceramic capacitor should be
attached to these pins to eliminate the effects of high frequency noise. The 0.1µF ceramic capacitors should be placed as
near to VD (VD1-2, VP, VVD1-4) as possible.
„ Voltage Reference
DVCOM and PVCOM are signal ground of this chip. An electrolytic capacitor 10µF parallel with a 0.1µF ceramic
capacitor should be attached to these VCOM pins to eliminate the effects of high frequency noise. No load current may be
drawn from these VCOM pins. All signals, especially clocks, should be kept away from these VCOM pins in order to
avoid unwanted coupling into the AK4706.
„ Analog Audio Outputs
The analog outputs are also single-ended and centered on 5.6V(typ.). The output signal range is typically 2Vrms
([email protected]=5V). The internal switched-capacitor filter and continuous-time filter attenuate the noise generated by the
delta-sigma modulator beyond the audio pass band. Therefore, any external filters are not required for typical application.
The output voltage is a positive full scale for 7FFFFFH (@24bit) and a negative full scale for 800000H (@24bit). The
ideal output is 5.6V(typ.) for 000000H (@24bit). The DC voltage on analog outputs are eliminated by AC coupling.
„ REFI pin
The REFI pin is video current reference pin. This pin should be connected to VVD1 through a 10kΩ±1% resistor
externally as shown in the Figure 20. No load current may be drawn from this pin. All signals, especially clocks, should be
kept away from this pin in order to avoid unwanted coupling.
AK4706
VVD1
R=10kΩ±1%
REFI
Figure 20. REFI pin
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ASAHI KASEI
[AK4706]
„ External Circuit Example
Analog Audio Input pin
300ohm
TVINL/R
VCRINL/R
DACL/R
0.47µF
(Cable)
Analog Audio Output pin
MONOOUT
TVOUTL/R
VCROUTL/R
300ohm
10µF
(Cable)
Total > 4.5kohm
Analog Video Input pin
75ohm
(Cable)
0.1µF
75ohm
ENCV, ENCY, VCRVIN,
TVVIN, ENCRC, ENCC,
VCRRC, ENCG, VCRG,
ENCB, VCRB, ENCPR,
ENCY2, ENCPB
Analog Video Output pin
TVVOUT, TVRC
TVG, TVR, RFV
VCRVOUT, VCRC,
HDPR, HDY,
HDPB
max
15pF
75ohm
(Cable)
max
400pF
MS0507-E-00
75ohm
2006/05
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ASAHI KASEI
[AK4706]
Slow Blanking pin (SDC bit = “0”)
TVSB
VCRSB
(Cable)
400ohm
(max 500ohm)
max 3nF
(with 400ohm)
min: 10k ohm
Fast Blanking Input pin (SDC bit = “0”)
VCRFB
(Cable)
75ohm
75ohm
Fast Blanking Output pin (SDC bit = “0”)
75ohm
TVFB
(Cable)
75ohm
Fast Blanking Output pin (SDC bit = “0”)
TVFB
TVSB
10k
+/-3kohm
(Cable)
Min: 100kohm
MS0507-E-00
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ASAHI KASEI
[AK4706]
PACKAGE
64pi n LQFP( Unit: mm)
12. 0±0. 3
1. 70max
0. 10±0. 10
10. 0
1. 40
33
48
32
64
17
0. 5
12. 0±0. 3
49
0. 17±0. 05
1
16
0. 21±0. 05
0. 10 M
1. 0
0° ~10°
0. 45±0. 2
0. 10
„ Package & Lead frame material
Package molding compound:
Lead frame material:
Lead frame surface treatment:
Epoxy
Cu
Solder (Pb free) plate
MS0507-E-00
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ASAHI KASEI
[AK4706]
MARKING
AKM
AK4706VQ
XXXXXXX
1
XXXXXXXX: Date code identifier
Revision History
Date (YY/MM/DD)
06/05/09
Revision
00
Reason
First Edition
Page
Contents
IMPORTANT NOTICE
• These products and their specifications are subject to change without notice. Before considering
any use or application, consult the Asahi Kasei Microsystems Co., Ltd. (AKM) sales office or
authorized distributor concerning their current status.
• AKM assumes no liability for infringement of any patent, intellectual property, or other right in the
application or use of any information contained herein.
• Any export of these products, or devices or systems containing them, may require an export license
or other official approval under the law and regulations of the country of export pertaining to customs
and tariffs, currency exchange, or strategic materials.
• AKM products are neither intended nor authorized for use as critical components in any safety, life
support, or other hazard related device or system, and AKM assumes no responsibility relating to
any such use, except with the express written consent of the Representative Director of AKM. As
used here:
(a) A hazard related device or system is one designed or intended for life support or maintenance of
safety or for applications in medicine, aerospace, nuclear energy, or other fields, in which its
failure to function or perform may reasonably be expected to result in loss of life or in significant
injury or damage to person or property.
(b) A critical component is one whose failure to function or perform may reasonably be expected to
result, whether directly or indirectly, in the loss of the safety or effectiveness of the device or
system containing it, and which must therefore meet very high standards of performance and
reliability.
• It is the responsibility of the buyer or distributor of an AKM product who distributes, disposes of, or
otherwise places the product with a third party to notify that party in advance of the above content
and conditions, and the buyer or distributor agrees to assume any and all responsibility and liability
for and hold AKM harmless from any and all claims arising from the use of said product in the
absence of such notification.
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