PRELIMINARY DATA SHEET
MSP 34x2G
reference for analog connections to the loudspeaker
and headphone outputs.
as possible. This input is sensitive for magnetic induc-
tion.
Pins 27, 28, DACM_R/L – Loudspeaker Outputs
(Fig. 4–17)
Pin 39, AHVSUP* – Analog Power Supply High Volt-
age
Output of the loudspeaker signal. A 1-nF capacitor to
AHVSS must be connected to these pins. The DC off-
set on these pins depends on the selected loud-
speaker volume.
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. 4–14)
Pin 29, DACM_C - Center Output
(Fig. 4–17)
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.
Output of the center loudspeaker signal. A 1-nF capac-
itor to AHVSS must be connected to these pins.
If active (HP/CS = 1), the DC offset on these pins
depends on the selected headphone volume.
Pin 30, DACM_SUB – Subwoofer Output (Fig. 4–17)
Output of the subwoofer signal. A 1-nF capacitor to
AHVSS must be connected to this pin. Due to the low
frequency content of the subwoofer output, the value
of the capacitor may be increased for better suppres-
sion of high-frequency noise. The DC offset on this pin
depends on the selected loudspeaker volume.
Pins 41, 42, NC – Pins not connected.
Pins 43, 44, AHVSS* – Ground for Analog Power Sup-
ply High Voltage
Ground connection for the analog circuitry of the MSP
(except IF input).
Pins 31, DACM_S - Surround Output
(Fig. 4–17)
Output of the surround loudspeaker signal. A 1-nF
capacitor to AHVSS must be connected to these pins.
If active (HP/CS = 1), the DC offset on these pins
depends on the selected headphone volume.
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.
Pin 32 NC – Pin not connected.
Pins 33, 34, SC2_OUT_R/L – SCART2 Outputs
(Fig. 4–19)
Pin 46, NC – Pin not connected.
Output of the SCART2 signal. Connections to these
pins must use a 100-Ω series resistor and are intended
to be AC-coupled.
Pins 47, 48, SC4_IN_L/R – SCART4 Inputs
(Fig. 4–16)
The analog input signal for SCART4 is fed to this pin.
Analog input connection must be AC-coupled.
Pin 35, VREF1 – Reference Ground 1
Reference analog ground. This pin must be connected
separately to the single ground point (AHVSS). VREF1
serves as a clean ground and should be used as the
reference for analog connections to the SCART out-
puts.
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. 4–16)
Pins 36, 37, SC1_OUT_R/L – SCART1 Outputs
(Fig. 4–19)
The analog input signal for SCART3 is fed to this pin.
Analog input connection must be AC-coupled.
Output of the SCART1 signal. Connections to these
pins must use a 100-Ω series resistor and are intended
to 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.
Pin 38, CAPL_A – Volume Capacitor Headphone
(Fig. 4–14)
Pins 53, 54 SC2_IN_L/R – SCART2 Inputs (Fig. 4–16)
The analog input signal for SCART2 is fed to this pin.
Analog input connection must be AC-coupled.
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
Pin 55, ASG – Analog Shield Ground
Analog ground (AHVSS) should be connected to this
pin to reduce cross-coupling between SCART inputs.
Micronas
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