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參數(shù)資料
型號(hào)： MAX9598CTL+T
廠商： Maxim Integrated Products
文件頁(yè)數(shù)： 14/36頁(yè)
文件大?。?/td> 0K
描述： IC SWITCH DUAL SCART 40TQFN
產(chǎn)品培訓(xùn)模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝： 2,500
功能： 開關(guān)
電路： 2 x SCART
導(dǎo)通狀態(tài)電阻： 7 歐姆
電壓電源： 單/雙電源
電壓 - 電源，單路/雙路(±)： 3 V ~ 3.6 V，±11.4 V ~ 12.6 V
工作溫度： 0°C ~ 70°C
安裝類型： 表面貼裝
封裝/外殼： 40-WFQFN 裸露焊盤
供應(yīng)商設(shè)備封裝： 40-TQFN-EP（6x6）
包裝： 帶卷 (TR)
Shutdown
All circuitry is shut down in the MAX9598 except for the
I2C interface, which is designed with static CMOS logic.
Except for register 10h, which sets the operating mode,
the values in all the other I2C registers are preserved
while entering, during, and leaving shutdown mode.
Low-Power Mode
Put the MAX9598 into low-power mode during standby.
Everything is shut down except for the slow-switching
circuits, CVBS input detection, CVBS load detection,
and I2C interface. If interrupt is enabled, then INT will go
active low whenever the slow-switch signal changes; a
CVBS signal appears or disappears; or a CVBS load
appears or disappears. The C in the set-top box can
then decide whether to change the MAX9598 to full-
power mode and loop VCR signals to the TV.
Before entering low-power mode, the slow-switch sig-
nals should be set to high impedance.
Except for registers 0Eh, 0Fh, and 10h, the value in all of
the other I2C registers are preserved while entering, dur-
ing, and leaving low-power mode. The values in registers
0Eh and 0Fh might change in low-power mode because
they provide status on the slow switch signals, CVBS
input, and CVBS outputs. The value in register 10h
changes while entering or leaving low-power mode
because bits 6 and 7 set the operating mode.
Full-Power Mode with Video Input Detection
and Video Load Detection
In this mode, the MAX9598 is fully on. If interrupt is
enabled, then INT will go active low whenever the slow-
switch signal changes; a CVBS signal appears or dis-
appears; or a CVBS load appears or disappears. The
C can decide whether to change the routing configu-
ration or operating mode of the MAX9598.
Full-Power Mode Without Video Input Detection
and Video Load Detection
This mode is similar to the above mode except that
video input detection and video load detection are not
active. If interrupt is enabled, then INT will go active low
only when the slow-switch signal changes.
MAX9598
Low-Power Audio/Video Switch for
Dual SCART Connectors
______________________________________________________________________________________
21
Table 4. Register Settings for Looping VCR Signals to the TV
BIT
DESCRIPTION
REGISTER
76543210
COMMENTS
00h
Default
01h
00011101
06h
00001010
07h
000100
x
(Note 5)
08h
x
0
x
1
(Note 6)
09h
00000110
0Dh
00111111
Loop VCR signals to the
TV
10h
10000000
Table 5. Quiescent Power Consumption
OPERATING MODE
POWER CONSUMPTION (mW)
Shutdown.
0.1
Low-power mode with slow switching, CVBS input video
detection, and video load detection active only. Audio circuitry
is off.
1.7
Full-power mode WITH input video detection and video load
detection active.
71
Full-power mode WITHOUT input video detection and video
load detection active (power-on default).
70
Note 5: TV slow-switch output (bits 1 and 0) should be the same as VCR slow-switch input.
Note 6: User has to set bits 7 and 3 appropriately depending upon whether signal is red or chroma.
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