參數(shù)資料
型號(hào)： AK4705
廠商： Asahi Kasei Microsystems Co.,Ltd
英文描述： 2ch 24bit DAC with AV SCART Switch
中文描述： 2通道24位DAC，具有影音SCART開(kāi)關(guān)
文件頁(yè)數(shù)： 33/50頁(yè)
文件大?。?/td> 660K
代理商： AK4705
[AK4705]
MS0451-E-01
2007/06
- 33 -
■
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
2
μ
sec(typ.) when the status of 08H is changed. This pin should be connected to VD (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.
AK4705
R=10k
INT
VD
uP
Figure 9. INT pin
MVC: VCMON Mask. Refer Table 30
MTV: TVMON Mask. Refer Table 29
MCOMN: Refer Table 28
AUTO
(00H D3)
0
0
0
0
1
1
TVMON
(08H D4)
No Change
No Change
Change
Change
No Change
No Change
MTV
(09H D4)
0
1
0
1
0
1
INT
Hi-Z
Hi-Z
Generates “L” Pulse
Hi-Z
Hi-Z
Hi-Z
Table 29. TV Monitor Mask
AUTO
(00H D3)
0
0
0
0
1
1
1
1
VCMON
(08H D3)
No Change
No Change
Change
Change
No Change
No Change
Change
Change
MVC
(09H D3)
0
1
0
1
0
1
0
1
INT
Hi-Z
Hi-Z
Generates “L” Pulse
Hi-Z
Hi-Z
Hi-Z
Generates “L” Pulse
Generates “L” Pulse
Table 30. VCR Monitor Mask
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.
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