MSP3400CPP View Datasheet(PDF) - Micronas

Part Name

Description

Manufacturer

MSP3400CPP

Multistandard Sound Processor

Micronas 

PRELIMINARY DATA SHEET

MSP 3400C

10. DMA Application

Fig. 10–1 shows an example for the D2MAC application

with the MSP 3400 or MSP 3400C. To obtain the optimal

amplitude and phase conditions for the clock input of

AMU, DMA 2386, and DMA 2381, it is recommended to

use a clock inverter circuit, as shown below right, a mini-

mum gain of 1.0 at 18.432 MHz and an output phase as

specified in Fig. 10–2.

S_DATA 66

S_IDENT 64

S_CLOCK 67

DMA 2381

Software:

SBS = 1

ACS = 1

ACF = 0

DCOF= 1

(addr. 204, 214)

open

+ 5 Volt

5K

9 S_DATA_IN

15 S_IDENT

8 S_CLOCK

AMU 2481

S_Bus

Slave_mode

S_DATA_OUT 6

13 AUDIO_CLOCK

ACLK

65 17

16

18.432 MHz

1 nF

68 S_CL

1 S_ID

3

S_DA_IN

MSP 3400C C6...

MSP 3410/00

TC15/F7

MODE_REG[0] = 1

Clock

Inverter

+2...3 V 18 AUD_CL_OUT

(see below)

4.7 nF

19 DMA_SYNC

65

ACLK

66

S_DATA

64

S_IDENT

DMA 2386

To

DMA 2381/86

and AMU 2481

Clock Inverter

+5 V

100 nF

120

6k8

10 nF

BC 848C

82

3k8

Fig. 10–1: DMA application with MSP 3410 TC15 or F7

Note: Pin numbers refer to PLCC packages for DMA 2381 and MSP 3400C and to PSDIP package for AMU 2481

Micronas

65

Share Link: