參數(shù)資料
型號： MSP34X5G
廠商： Electronic Theatre Controls, Inc.
英文描述： MSP 34x5G Multistandard Sound Processor Family
中文描述： 中型34x5G多標準聲音處理器系列
文件頁數(shù)： 45/98頁
文件大?。?/td> 1541K
代理商： MSP34X5G
PRELIMINARY DATA SHEET
MSP 34x5G
Micronas
45
4.3. Pin Description
Pin numbers refer to the PQFP80 package
Pin 1,
NC
–
Pin not connected
Pin 2,
I2C_CL
–
I
2
C Clock Input/Output (Fig. 4
–
18)
Via this pin the I
2
C bus clock signal has to be supplied.
The signal can be pulled down by the MSP in case of
wait conditions.
Pin 3,
I2C_DA
–
I
2
C Data Input/Output (Fig. 4
–
18)
Via this pin the I
2
C bus data is written to or read from
the MSP.
Pin 4,
I2S_CL
–
I
2
S Clock Input/Output (Fig. 4
–
19)
Clock 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
clock has to be supplied.
Pin 5,
I2S_WS
–
I
2
S Word Strobe Input/Output
(Fig. 4
–
19)
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 6,
I2S_DA_OUT
–
I
2
S Data Output (Fig. 4
–
23)
Output of digital serial sound data of the MSP on the
I
2
S bus.
Pin 7,
I2S_DA_IN1
–
I
2
S Data Input 1 (Fig. 4
–
17)
First input of digital serial sound data to the MSP via
the I
2
S bus.
Pin 8,
ADR_DA
–
ADR Bus Data Output (Fig. 4
–
23)
Output of digital serial data to the DRP 3510A via the
ADR bus.
Pin 9,
ADR_WS
–
ADR Bus Word Strobe Output
(Fig. 4
–
23)
Word strobe output for the ADR bus.
Pin 10,
ADR_CL
–
ADR Bus Clock Output (Fig. 4
–
23)
Clock line for the ADR bus.
Pins 11, 12, 13,
DVSUP*
–
Digital Supply Voltage
Power supply for the digital circuitry of the MSP. Must
be connected to a +5-V power supply.
Pins 14, 15, 16,
DVSS*
–
Digital Ground
Ground connection for the digital circuitry of the MSP
Pin 17,
I2S_DA_IN2
–
I
2
S Data Input 2 (Fig. 4
–
17)
Second input of digital serial sound data to the MSP
via the I
2
S bus.
Pins 18, 19, 20,
NC
–
Pins not connected
Pin 21,
RESETQ
–
Reset Input (Fig. 4
–
11)
In the steady state, high level is required. A low level
resets the MSP 34x0G.
Pins 22, 23, 24, 25,
NC
–
Pins not connected
Pin 26,
VREF2
–
Reference Ground 2
Reference analog ground. This pin must be connected
separately to ground (AHVSS). VREF2 serves as a
clean ground and should be used as the reference for
analog connections to the loudspeaker and head-
phone outputs.
Pins 27, 28,
DACM_R/L
–
Loudspeaker Outputs
(Fig. 4
–
21)
Output of the loudspeaker signal. A 1nF capacitor to
AHVSS must be connected to these pins. The DC off-
set on these pins depends on the selected loud-
speaker volume.
Pins 29, 30, 31, 32, 33, 34,
NC
–
Pins not connected
Pin 35,
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 36, 37,
SC1_OUT_R/L
–
SCART1 Outputs
(Fig. 4
–
22)
Output of the SCART1 signal. Connections to these
pins must use a 100 ohm series resistor and are
intended to be AC coupled.
Pin 38,
NC
–
Pin not connected
Pin 39,
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 40,
CAPLM
–
Volume Capacitor Loudspeakers
(Fig. 4
–
24)
A 10
μ
F capacitor to AHVSUP must be connected to
this pin. It serves as 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 Sup-
ply High Voltage
Ground connection for the analog circuitry of the MSP
(except IF input).
Pins 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.
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