MC145484 Просмотр технического описания (PDF) - Motorola => Freescale

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MC145484

5V PCM Codec-Filter

Motorola => Freescale 

0.1 µF

18 pF

+5V

2.048 MHz

10 MΩ

300 Ω

18 pF

VCC

GND Q8

R OSC IN OSC OSC

OUT 1 OUT 2

MC74HC4060

Q4

2.048 MHz

(BCLKT, BCLKR, MCLK)

8 kHz

(FST, FSR)

+5V

J

VCC

Q

1/2 MC74HC73

K

Q

GND R

J

Q

1/2 MC74HC73

K

Q

R

+5V

8 kHz

256 1

2

3

4

5

6

7

8

9

2.048 MHz

Figure 9. Long Frame Sync Clock Circuit for 2.048 MHz

REC

+5V

0.1 µF

SIDETONE

0.1 µF

1 VAG Ref

2

RO–

3

PI

4

PO–

5

PO+

6 VDD

7 FSR

8

DR

9 BCLKR

10 PDI

0.01 µF

420 pF

VAG 20

TI+ 19

75 kΩ

18

TI–

TG 17

75 kΩ

Mu/A 16 + 5 V

420 pF

VSS 15

FST 14

DT 13

BCLKT 12

MCLK 11

68 µF

+5 V

1 kΩ

1 kΩ

1 kΩ 1.0 µF

1 kΩ

MIC

1.0 µF

8 kHz

PCM OUT

2.048 MHz

PCM IN

Figure 10. MC145484 Analog Interface to Handset

MC145484

20

MOTOROLA

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