T8301 View Datasheet(PDF) - Agere -> LSI Corporation

Part Name

Description

Manufacturer

T8301

Internet Protocol Telephone Phone-On-A-Chip™ IP Solution DSP

Agere -> LSI Corporation 

T8301 Internet Protocol Telephone

Phone-On-A-Chip IP Solution DSP

Advance Data Sheet

December 2000

5 Audio Input/Output Circuitry (continued)

Table 10. Tone Ringer Frequency Encoding (continued)

Tone Ringer Frequency Encoding

Hz

Hex Hz

Hex Hz

Hex

Hz

Hex Hz

Hex Hz

Hex

2,087 02 727.3 3B 440.4 F6 315.8 A3 247.4 F7 203.4 7D

2,000 01 716.4 9D 436.4 7B 313.7 D1 246.2 FB 202.5 3E

1,920 80 705.9 4E 432.4 BD 311.7 68 244.9 FD 201.7 9F

1,846 40 695.7 27 428.6 5E 309.7 B4 243.7 7E 200.8 4F

1,778 20 685.7 13 424.8 AF 307.7 5A 242.4 BF 200.0 A7

1,714 10 676.1 09 421.1 D7 305.7 2D 241.2 5F 199.2 53

1,655 88 666.7 04 417.4 EB 303.8 96 240.0 2F 198.3 29

1,600 C4 657.5 82 413.8 75 301.9 4B 238.8 97 197.5 14

1,548 E2 648.6 41 410.3 BA 300.0 25 237.6 CB 196.7 0A

1,500 71 640.0 A0 406.8 5D 298.1 12 236.5 65 195.9 85

1,455 38 631.6 50 403.4 2E 296.3 89 235.3 32 195.1 42

1,412 1C 623.4 A8 400.0 17 294.5 44 234.1 99 194.3 21

1,371 8E 615.4 D4 396.7 8B 292.7 A2 233.0 CC 193.5 90

1,333 47 607.6 6A 393.4 45 290.9 51 231.9 66 192.8 C8

1,297 23 600.0 B5 390.2 22 289.2 28 230.8 B3 192.0 E4

1,263 91 592.6 DA 387.1 11 287.4 94 229.7 59 191.2 F2

1,231 48 585.4 6D 384.0 08 285.7 4A 228.6 AC 190.5 F9

1,200 A4 578.3 B6 380.9 84 284.0 A5 227.5 56 189.7 FC

1,171 D2 571.4 5B 377.9 C2 282.4 52 226.4 2B 189.0 FE

1,143 E9 564.7 AD 375.0 61 280.7 A9 225.4 15 188.2 FF

1,116 74 558.2 D6 372.1 B0 279.1 54 224.3 8A

—

—

1,091 3A 551.7 6B 369.2 D8

—

—

—

—

—

—

5.5 Audio Codec Block

The T8301 contains a 16-bit analog-to-digital converter and two 16-bit digital-to-audio converters. These convert-

ers each contain appropriate antialiasing or smoothing filters. A block diagram of the audio codec block is shown

below.

.

TO SPEAKER DRIVER

LOW-PASS

RC FILTER

DAC

16-bit

TO HANDSET OUTPUT

OR

SPEAKER DRIVER 2

LOW-PASS

RC FILTER

DAC

16-bit

FROM AIN MUX

LOW-PASS

RC FILTER

ADC

16-bit

SDM

x 16

RCV

INTRP

x4

RCV

LPF

x2

1 Mbit/s 64 kS/s

16 kS/s

8 kS/s

SDM

x 16

RCV

INTRP

x4

RCV

LPF

x2

1 Mbit/s

SINC3

DECM

/ 64

16 kS/s

8 kS/s

XMT

16

BPF

/2

FROM

DMAS

FROM

DMAH

TO

DMAIN

5-8212 (F)

Figure 5. Audio Codec Block Diagram

20

Lucent Technologies Inc.

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