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参数资料
| 型号： | REJ03F0040_M61528FP |
| 厂商： | Hitachi,Ltd. |
| 英文描述： | LEAD FREE A6832 PLCC |
| 中文描述： | 超临界型固定式均衡器，汽车音响 |
| 文件页数： | 16/31页 |
| 文件大小： | 306K |
| 代理商： | REJ03F0040_M61528FP |
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M61528FP
Rev.1.1, Dec.17.2003, page 16 of 30
SOFT-CHANGING 2
This is the circuit which changes gain by 2dB step.
This function can work as follows,
(1) At the time of Soft-changing ON.
(2) Slot15/D6=1
(3) After the last Soft-changing is completed.
For example, the movement when Fader is changed from 0dB to –6dBis shown in the right figure(ex.2).
After this IC receive the data of fader:-6dB,
0dB ”
-2dB ”
-4dB ”
-6dB ”
this circuit changes fader setting from 0dB to –6dB by 2dB step.
Switching time is the time when it was set up with Soft-changing time.
Total changing time is as the follows.
Total changing time=Soft-changing time × the number of the step
In the case of the right figure, total changing time is 99mS. (33mS × 3 steps)
When Soft-changing time is long, step noise is more reduced. Because the step noise is has relations with Soft-
changing time. We recommend SOFT-CHANGING 2.
However, please confirm step noise by listening test, and judge it.
(ex. 2) Fader : 0dB
→
-6dB changing. Soft-changing time : 33ms
Fader
0dB
Fader
-6dB
t:Soft-changing time(You may change it with serial DATA.)
*
1
)
While Soft-changing works (PIN15 output “H”)
next data isn't accepted.
*
2
)
PIN15 outputs “L”except for the time of
t=33mS
Soft-changing.
15 pin
Output
While Soft-changing works,
PIN15 output “H”
DATA
CLOCK
Slot13
The latch condition
D0toD14
D15
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| REJ03F0041_M61532FP | 制造商:HITACHI 制造商全称:Hitachi Semiconductor 功能描述:8ch Electronic Volume with 9 Input Selector |
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| REJ03F0052_M54679SP | 制造商:HITACHI 制造商全称:Hitachi Semiconductor 功能描述:2-Phase Stepper Motor Driver |
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| REJ03F0059_M61533FP | 制造商:HITACHI 制造商全称:Hitachi Semiconductor 功能描述:4ch Electronic Volume with AGC |
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