TCM4400 Datasheet, PDF(10/72 Page) Texas Instruments – GSM/DCS BASEBAND AND VOICE A/D AND D/A RF INTERFACE CIRCUIT

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TCM4400 Datasheet, PDF (10/72 Pages) Texas Instruments – GSM/DCS BASEBAND AND VOICE A/D AND D/A RF INTERFACE CIRCUIT

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1.2 Functional Block Diagram

Main Clock

Generator

USEL 75

UCLK 78

UDX 76

UDR 77

BFSX 1

BDX 3

BCLKX 2

BFSR 6

BDR 4

BCLKR 5

MCU

Serial

Interface

DSP

Serial

Interface

VCLK 16

VFS 13

VDX 14

VDR 15

Voice Band

Serial

Interface

SSCLK 20

SSRST 17

SSDX 18

SSDR 19

DAI

Interface

JTAG

Interface

GSM Windows

Timing

Interface

Power

Management

Auxiliary DAC 45 AGC

Analog AGC

APC (D/A)

RF TX Ramp

APC

Bus

Controller

Baseband Uplink GMSK Modulator

Internal Burst RAM

Automatic Offset Compensation

8-Bit DAC and Smoothing Filter

Baseband Downlink I/Q Path

Automatic Offset Compensation

10-Bit ADC and Antialiasing Filter

60 BULIP

57 BULIN

BULQN

BULQP

53 BDLIP

BDLIN

52 BDLQN

BDLQP

Voice Uplink 13-Bit ADC

Two Analog Inputs

Programmable Gain

Band-Pass Digital Filter

Sidetone

Voice Downlink 13-Bit DAC

Auxiliary Earphone Output

Programmable Volume

Smoothing Filter

Band-Pass Digital Filter

I REF-VREF

VMID

Bias

AGC, AFC

APC Output

Swing Control

43 AVDD3/5

AFC (D/A)

VTCXO Control

46 AFC

Auxiliary

10 Bits

5-Input ADC

36 ADIN1

ADIN2

38 ADIN3

ADIN4

40 ADIN5

AVDD1

AVSS1

AVDD2

AVSS2

AVDD3 48

AVSS3

Supply and

Ground

Terminals

35 GNDA2

25 GNDA1

21 DVSS4

DVDD4

DVSS3

DVDD3

1â2

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