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Program/Data Memory Requirements

NOTE: Be sure to see the notes below the tables for details on how to correctly interpret the contents of these tables.

Memory Requirements Listed for Common Component Ensembles

Component,

Ensemble, or System

Analog Devices ADSP

Texas Instruments TMS320

LSI Logic ZSP

BF53x

219x

21xx/218x

C3000

C5400

C5500

C6200

C6400

ZSP400

CODE+

COEFS

RAM

per- channel

CODE+

COEFS

RAM

per- channel

CODE+

COEFS

RAM

per- channel

CODE+

COEFS

RAM

per- channel

CODE+

COEFS

RAM

per- channel

CODE+

COEFS

RAM

per- channel

CODE+

COEFS

RAM

per- channel

CODE+

COEFS

RAM

per- channel

CODE+

COEFS

RAM

per- channel
Baudot (bauddemo) - - - - - - - - 1708 300 - - - - 2401+
576		 355 - -
Bell103 (v21demo) - - 2899 390 3147 390 2147 575 1059 575 - - - - - - - -
Bell202 (v23demo) - - 2052 321 - - - - 1999 575 - - - - - - - -
Caller ID, Bellcore (ciddemo) 2860+
582		 574 2823 591 2634 591 - - 2206 831 2231 618 3312* 839 - - 9199* 839
GenDet (cptddemo) - - - - - - - - 2275 318 2358 318 - - - - 12209* 318
DTMF+GenDet (dtmfdemo) 3126+
754		 398 2717 581 3277 581 2096 752 2987 441 2938 391 5736* 441 - - 13734* 441
MF (R1, R2F, R2B)+GenDet (mfdemo) 2960+
742		 404 3215 464 3401 464 2228 925 2685 407 3109 373 5712* 407 3120+
453*		 408 - -
G.168-2002 3852 2467 - - - - - - - - - - - - - - 4051 1350
G.726 (g726demo) - - - - - - - - 3412 196 - - - - - - - -
STU-III Relay System                     30781+
1572*		 4430     31744+
1572*		 4430    
T.38 Fax Relay System 32240+
7830*		 5770 32755 4742 - - - - 29077 4742 19250+
3243		 4742 33403* 4742 26984+
3688*		 4742 36803+
4190*		 4742
V.14+V.32bis (v14demo) - - 13662 1726 - - - - 12351 1736 - - - - - - - -
V.21 (v21demo) - - 3661 323 3817 320 - - 2562 320 2653 283 - - - - - -
V.22bis+TxDTMF (v22demo) - - 8716 552 8651 552 5620 1264 6955 668 7334 718 - - - - 24096* 718
V.23 (v23demo) - - 2052 321 2192 321 - - 1523 320 1350 320 - - - - - -
V.26/V.26bis (v26demo) - - 6337 1022 5094 1022 3361 1551 2928 1551 - - 5752* 1551 - - - -
V.27ter+GenDet (vmodem) - - 5968 553 6041 553 3746 938 4402 938 4319 938 9696* - - - - -
V.29+GenDet (v29demo) - - - - - - - - 4565+
1261		 635 4056+
1261		 635 - - - - - -
V.32bis+TxDTMF (v32demo) - - 12669 1654 10276 1654 8684 1639 11009 1611 11758 1664 - - - - - -
V.34+TxDTMF (v34demo) - - - - - - - - 58400Ψ 4426 50612Ψ 4426 - - 39998Ψ 6096 - -
V.42+V.14+V.32bis (v42demo) - - 19002 3021 19381 2030 - - 15927* 3000 13477+
2111Ψ		 3522 - - 19528+
2111Ψ		 3522 - -
V.42+V.42bis+V.14+
V.32bis (v42bisdemo)		 - - - - - - - - 18158* 15990 - - - - - - - -
V.21+V.17+V.27+V.29+ GenDet (Fax Bundle) 6522+
3366		 870 12974 833 11028 833 9216 817 11191 817 10631 817 18579* 832 - - 26979* 817

Memory Requirements For Individual Object Modules

Object or

Module

Analog Devices ADSP

Texas Instruments TMS320

LSI Logic ZSP

BF53x

219x

21xx/218x

C3000

C5400

C5500

C6200

 C6400

ZSP400

CODE+

COEFS

RAM

per- channel

CODE+

COEFS

RAM

per- channel

CODE+

COEFS

RAM

per- channel

CODE+

COEFS

RAM

per- channel

CODE+

COEFS

RAM

per- channel

CODE+

COEFS

RAM

per- channel

CODE+

COEFS

RAM

per- channel

CODE+

COEFS

RAM

per- channel

CODE+

COEFS

RAM

per- channel
cid (Caller ID)
         - Tx only
         - Rx only		 - - 711
391
380		 -

645
326
319

0

-

0

680
345
337

0

 596
310
286		 0 1304*

0

 - -

-

0
common - - 1059 -

935

0

525

0

647

0

 694 0 2992*

0

-

-

4124*

0
dtmf - - 537 -

418

0

406

0

568

0

 586 0 814*

0

-

-

-

0
echo - - 226 - 178 0 115 0 170 0 174 0 601* 0

-

-

 - 0
filter - - 53 - 51 0 - - 41 0 44 0 464* 0

-

-

 260* -
fsk - - 623 - 426 0 - - 241 0 276 0 - 0

-

-

 1197* -
gendet - - 1801 -

1767

-

-

-

1287

0

 1353 0 -

0

-

-

6587*

-
g.726
 - encoder only
  - decoder only		 -
-
-		 -
-
-		 -
-
-		 -
-
-

-
-
-

-
-
-

-
-
-

-
-
-

3412
1706
1706

196
98
98

 -
-
-		 -
-
-		 -
-
-

-
-
-

    

-
-
-

-
-
-

memory

 10                                  
mf - - 686 -

530

0

522

0

712

0

 500 - 946*

0

-

-

-

0
rxtx - - 638 -

556

0

744

0

324

0

 303 0 368*

0

-

-

723*

0
tcm - - 1932 -

1863

0

1566

0

2252

0

 2335 0 3929*

0

-

-

3226*

0

vcoefs

    

3303

 

3303

 

4617

 

4617

 

4617

 

4617

 

-

-

3820

 
V.8 - - - -

-

-

-

-

2030*

0

    

1818*

0

-

-

-

-
V.17 - - 1304 -

1089

0

2858

0

952

0

 937 0 1718*

0

-

-

2785*

0
V.21/Bell 103 - - 110 -

93

 0

303

0

99

0

 179 0 780*

0

-

-

249*

0
V.22bis - - 3344 -

-

0

3096

0

3582

0

 - - 4004*

0

-

-

-

0
V.23/Bell 202 - - 226 -

156

 0

-

-

172

0

 149 0 -

-

-

-

-

-
V.26 - - 1556 -

1754

0

1516

0

1575

0

 - 0 1368*

0

-

-

-

0
V.27ter - - 1453 -

1226

0

2453

0

 1099

0

 1050 0 1816*

0

-

-

2800*

0
V.29 - - 1841 -

1403

0

 2347

0

1490

0

 1445 0 2390*

0

-

-

 3879*

0
V.32 - - 5501 -

5516

0

3562

0

5158

0

 4333 0 7324*

0

-

-

-

0
V.32bis - - 5633 -

5783

0

5011

0

5279

0

 4337 0 7324*

0

-

-

-

0
V.34 - - - -

-

-

-

-

16133*

2754*

 - -    

-

-

-

-
V.42 - - - -

6677

3142

-

-

5572*

1289*

 3834* 0

-

-

-

-

-

-
V.42bis
MAX_CODEWORD:
- 512 (compact)
- 1024 (compact)
- 2048 (compact)
- 4096 (non-compact)		 - - - -

-

-

-

-

1776*



3383*
6455*
12599*
33079*

 - -

-

-

-

-

-

-
UART - - - -

-

-

-

-

522

310

 - -

-

-

-

-

-

-

Notes:

  1. In these tables, "CODE+COEFS" refers to total read-only executable code/coefficient storage - only one instance required per system.  "RAM per-channel" refers to read/write data storage required for each channel.

  2. All CODE are in native WORDS for the device type: 32-bits for C3000, 16-bits for C5400/C5500, 32-bits for C6000; 32-bits for BF53x, 24-bits for 218x/219x, and 48-bits for 2106x; 16-bits for ZSP400.

  3. All COEFS and RAM per-channel are in 16-bit "short integer" for all ports.

  4. Items marked with an asterisk (*) were generated using an optimizing C compiler and are not manually Assembly-optimized for code size. All other numbers are measured from the Assembly Source code products built for optimal execution speed and on-chip memory usage. MESi Assembly Source products are manually ported from the C Source - they not compiler output and were not derived from C compiler output.

  5. Items marked with psi (Ψ) are measured from mixed C and optimized Assembly Source for MIPs-intensive algorithms, such as Hilbert filters, FIR interpolator/decimators, adaptive equalizers, and adaptive echo cancellers. The C source is mainly for the initialization, control, and protocol sequencing operations and compiled versus assembly source performance is very similar. This may be the only form (mixed C and Assembly) available for some devices.  

  6. Memory usage varies widely with component configuration and code generation method. The CODE+COEFS numbers are the MAXIMUM you would need to store if each module is built with all options enabled.  The RAM numbers are the MINIMUM you would need to implement a channel using the default buffer sizes. The individual Object numbers show you the size of each constituent Object module, but you need to look at the ensemble numbers to see how much memory is required to build a complete component.

  7. Several RAM memory vectors are circular buffers and must be correctly aligned by the linker for Texas Instruments and Analog Devices DSPs. We provide example linker command files showing the needed alignment for one and two channel implementations.

  8. V32bis includes the fallback to v32, and includes all v32bis bit rates (14400, 12000, 9600, 9600 non-TCM, 7200, and 4800 non-TCM). The v32 CODE+COEFS figure is for non-TCM v32 bit rates only (9600 and 4800 non-TCM).

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