參數(shù)資料
型號(hào)： MSP3430
廠商： Electronic Theatre Controls, Inc.
英文描述： Multistandard Sound Processor Family
中文描述： 多標(biāo)準(zhǔn)聲音處理器系列
文件頁(yè)數(shù)： 50/101頁(yè)
文件大小： 752K
代理商： MSP3430
MSP 34x0G
PRELIMINARY DATA SHEET
50
Micronas
Pin 38,
CAPL_A
–
Volume Capacitor Headphone
(Fig. 4
–
24)
A 10-
μ
F capacitor to AHVSUP must be connected to
this pin. It serves as a smoothing filter for headphone
volume changes in order to suppress audible plops.
The value of the capacitor can be lowered to 1-
μ
F if
faster response is required. The area encircled by the
trace lines should be minimized; keep traces as short
as possible. This input is sensitive for magnetic induc-
tion.
Pin 39,
AHVSUP*
–
Analog Power Supply High Volt-
age
Power is supplied via this pin for the analog circuitry of
the MSP (except IF input). This pin must be connected
to the
+
8 V supply.
Pin 40,
CAPL_M
–
Volume Capacitor Loudspeaker
(Fig. 4
–
24)
A 10-
μ
F capacitor to AHVSUP must be connected to
this pin. It serves as a smoothing filter for loudspeaker
volume changes in order to suppress audible plops.
The value of the capacitor can be lowered to 1
μ
F if
faster response is required. The area encircled by the
trace lines should be minimized; keep traces as short
as possible. This input is sensitive for magnetic induc-
tion.
Pins 41, 42,
NC
–
Pins not connected.
Pins 43, 44,
AHVSS*
–
Ground for Analog Power
Supply High Voltage
Ground connection for the analog circuitry of the MSP
(except IF input).
Pin 45,
AGNDC
–
Internal Analog Reference Voltage
This pin serves as the internal ground connection for
the analog circuitry (except IF input). It must be con-
nected to the VREF pins with a 3.3-
μ
F and a 100-nF
capacitor in parallel. This pins shows a DC level of typ-
ically 3.73 V.
Pin 46,
NC
–
Pin not connected.
Pins 47, 48,
SC4_IN_L/R
–
SCART4 Inputs
(Fig. 4
–
14)
The analog input signal for SCART4 is fed to this pin.
Analog input connection must be AC-coupled.
Pin 49,
ASG
–
Analog Shield Ground
Analog ground (AHVSS) should be connected to this
pin to reduce cross-coupling between SCART inputs.
Pins 50, 51,
SC3_IN_L/R
–
SCART3 Inputs
(Fig. 4
–
14)
The analog input signal for SCART3 is fed to this pin.
Analog input connection must be AC-coupled.
Pin 52,
ASG
–
Analog Shield Ground
Analog ground (AHVSS) should be connected to this
pin to reduce cross-coupling between SCART inputs.
Pins 53, 54,
SC2_IN_L/R
–
SCART2 Inputs
(Fig. 4
–
14)
The analog input signal for SCART2 is fed to this pin.
Analog input connection must be AC-coupled.
Pin 55,
ASG
–
Analog Shield Ground
Analog ground (AHVSS) should be connected to this
pin to reduce cross-coupling between SCART inputs.
Pins 56, 57,
SC1_IN_L/R
–
SCART1 Inputs
(Fig. 4
–
14)
The analog input signal for SCART1 is fed to this pin.
Analog input connection must be AC-coupled.
Pin 58,
VREFTOP
–
Reference Voltage IF A/D Con-
verter (Fig. 4
–
16)
Via this pin, the reference voltage for the IF A/D con-
verter is decoupled. It must be connected to AVSS
pins with a 10-
μ
F and a 100-nF capacitor in parallel.
Traces must be kept short.
Pin 59,
NC
–
Pin not connected.
Pin 60,
MONO_IN
–
Mono Input (Fig. 4
–
14)
The analog mono input signal is fed to this pin. Analog
input connection must be AC-coupled.
Pins 61, 62,
AVSS*
–
Ground for Analog Power
Supply Voltage
Ground connection for the analog IF input circuitry of
the MSP.
Pins 63, 64,
NC
–
Pins not connected.
Pins 65, 66,
AVSUP*
–
Analog Power Supply Voltage
Power is supplied via this pin for the analog IF input cir-
cuitry of the MSP. This pin must be connected to the
+
5 V supply.
Pin 67,
ANA_IN1
+
–
IF Input 1 (Fig. 4
–
16)
The analog sound IF signal is supplied to this pin.
Inputs must be AC-coupled. This pin is designed as
symmetrical input: ANA_IN1
+
is internally connected
to one input of a symmetrical op amp, ANA_IN- to the
other.
Pin 68,
ANA_IN
–
IF Common (Fig. 4
–
16)
This pins serves as a common reference for ANA_IN1/
2
+
inputs.
Pin 69,
ANA_IN2
+
–
IF Input 2 (Fig. 4
–
16)
The analog sound if signal is supplied to this pin.
Inputs must be AC-coupled. This pin is designed as
symmetrical input: ANA_IN2
+
is internally connected
to one input of a symmetrical op amp, ANA_IN
to the
other.
Pin 70,
TESTEN
–
Test Enable Pin (Fig. 4
–
12)
This pin enables factory test modes. For normal opera-
tion, it must be connected to ground.
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