DATA SHEET
MSP 34x0G
Pin 38, CAPL_A – Volume Capacitor Headphone
(Fig. 4–23)
Pins 53, 54, SC2_IN_L/R – SCART2 Inputs
(Fig. 4–13)
A 10-µF 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-µF 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.
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. 4–13)
Pin 39, AHVSUP* – Analog Power Supply High Volt-
age
The analog input signal for SCART1 is fed to this pin.
Analog input connection must be AC-coupled.
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 58, VREFTOP – Reference Voltage IF A/D Con-
verter (Fig. 4–15)
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-µF and a 100-nF capacitor in parallel.
Traces must be kept short.
Pin 40, CAPL_M – Volume Capacitor Loudspeaker
(Fig. 4–23)
A 10-µF 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 µF 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 59, NC – Pin not connected.
Pin 60, MONO_IN – Mono Input (Fig. 4–13)
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
Pins 41, 42, NC – Pins not connected.
Ground connection for the analog IF input circuitry of
the MSP.
Pins 43, 44, AHVSS* – Ground for Analog Power
Supply High Voltage
Ground connection for the analog circuitry of the MSP
(except IF input).
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
circuitry of the MSP. This pin must be connected to the
+5 V supply.
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-µF and a 100-nF
capacitor in parallel. This pins shows a DC level of typ-
ically 3.73 V (with AHVSUP = 8 V).
Pin 67, ANA_IN1+ – IF Input 1 (Fig. 4–15)
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 46, NC – Pin not connected.
Pins 47, 48, SC4_IN_L/R – SCART4 Inputs
(Fig. 4–13)
The analog input signal for SCART4 is fed to this pin.
Analog input connection must be AC-coupled.
Pin 68, ANA_IN− – IF Common (Fig. 4–15)
This pins serves as a common reference for ANA_IN1/
2+ inputs.
Pin 49, ASG – Analog Shield Ground
Analog ground (AHVSS) should be connected to this
pin to reduce cross-coupling between SCART inputs.
Pin 69, ANA_IN2+ – IF Input 2 (Fig. 4–15)
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.
Pins 50, 51, SC3_IN_L/R – SCART3 Inputs
(Fig. 4–13)
The analog input signal for SCART3 is fed to this pin.
Analog input connection must be AC-coupled.
Pin 70, TESTEN – Test Enable Pin (Fig. 4–11)
This pin enables factory test modes. For normal opera-
tion, it must be connected to ground.
Pin 52, ASG – Analog Shield Ground
Analog ground (AHVSS) should be connected to this
pin to reduce cross-coupling between SCART inputs.
Micronas
May 27, 2003; 6251-476-1DS
55
MICRONAS [ MICRONAS ]
