SERVICE MANUAL FOR M35&36; CHASSIS

TCL
(Fig. 9)
Word strobe line for the I 2 S bus. In master mode, this
line is driven by the MSP; in slave mode, an external
I 2 S word strobe has to be supplied.
Pin 11, I2S_DA_OUT –I 2 S Data Output (Fig. 13)
Output of digital serial sound data of the MSP on the
I 2 S bus.
Pin 12, I2S_DA_IN1 –I 2 S Data Input 1 (Fig. 7)
First input of digital serial sound data to the MSP via
the I 2 S bus.
Chassis M35&36 Service Manual
clean ground and should be used as the reference
for analog connections to the loudspeaker and
headphone outputs.
Pins 24, 25, DACM_R/L – Loudspeaker Outputs
(Fig. 11)
Output of the loudspeaker signal. A 1nF capacitor
to AHVSS must be connected to these pins. The
DC offset on these pins depends on the selected
loudspeaker volume.
Pins 26, 27, 28, NC – Pins not connected
Pin 13, ADR_DA – ADR Bus Data Output (Fig. 13)
Output of digital serial data to the DRP 3510A via the
ADR bus.
Pin 14, ADR_WS – ADR Bus Word Strobe Output
(Fig. 13)
Word strobe output for the ADR bus.
Pin 15, ADR_CL – ADR Bus Clock Output (Fig. 13)
Clock line for the ADR bus.
Pins 16, DVSUP* – Digital Supply Voltage
Power supply for the digital circuitry of the MSP. Must
be connected to a +5-V power supply.
Pin 29, VREF1 – Reference Ground 1 Reference
analog ground. This pin must be connected
separately to ground (AHVSS). VREF1 serves as a
clean ground and should be used as the reference
for analog connections to the SCART outputs.
Pins 30, 31, SC1_OUT_R/L – SCART1 Outputs
(Fig. 12)
Output of the SCART1 signal. Connections to
these pins must use a 100 ohm series resistor and
are intended to be AC coupled.
Pin 32, NC – Pin not connected
Pins 17, DVSS* – Digital Ground
Ground connection for the digital circuitry of the MSP
Pin 18, I2S_DA_IN2 –I 2 S Data Input 2 (Fig. 7)
Second input of digital serial sound data to the MSP
via the I 2 S bus.
Pins 19, NC – Pins not connected
Pin 20, RESETQ – Reset Input (Fig. 1)
In the steady state, high level is required. A low level
resets the MSP 34x0G.
Pins 21, 22 NC – Pins not connected
Pin 23, VREF2 – Reference Ground 2
Reference analog ground. This pin must be connected
separately to ground (AHVSS). VREF2 serves as a
MSP (except IF input).
Pin 33, AHVSUP* – Analog Power Supply High
Voltage Power is supplied via this pin for the
analog circuitry of the MSP (except IF input). This
pin must be connected to the +8V supply.
Pin 34, CAPLM – Volume Capacitor Loudspeakers
(Fig. 14)
A 10⎧F capacitor to AHVSUP must be connected
to this pin. It serves as smoothing filter for loudsp-
Eaker volume changes in order to suppress
audible plops. The value of the capacitor can be
lowered to 1⎧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 induction.
Pins 35, AHVSS* – Ground for Analog Power
Supply High Voltage
Ground connection for the analog circuitry of the
33 03.Mar.2003