MSC8122 datasheet(32/48 Pages) FREESCALE

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MSC8122 Quad Digital Signal Processor Data Sheet, Rev. 15

Electrical Characteristics

Freescale Semiconductor

2.5.7

TDM Timing

Table 21. TDM Timing

No.

Characteristic

Expression

1.1 V Core

1.2 V Core

Units

Min

Max

Min

Max

300

TDMxRCLK/TDMxTCLK

TC1

—

301

TDMxRCLK/TDMxTCLK high pulse width

(0.5

± 0.1) × TC

7—

302

TDMxRCLK/TDMxTCLK low pulse width

(0.5

± 0.1) × TC

7—

303

TDM receive all input set-up time

1.3

—

1.3

—

304

TDM receive all input hold time

1.0

—

1.0

—

305

TDMxTCLK high to TDMxTDAT/TDMxRCLK output

active2,3

2.8

—

2.8

—

306

TDMxTCLK high to TDMxTDAT/TDMxRCLK output

—

10.0

—

8.8

307

All output hold time4

2.5

—

2.5

—

308

TDMxTCLK high to TDmXTDAT/TDMxRCLK output high

impedance2,3

—

10.7

—

10.5

309

TDMxTCLK high to TDMXTSYN output valid2

—

9.7

—

8.5

310

TDMxTSYN output hold time4

2.5

—

2.5

—

Notes:

Values are based on a a maximum frequency of 62.5 MHz. The TDM interface supports any frequency below 62.5 MHz.

Devices operating at 300 MHz are limited to a maximum TDMxRCLK/TDMxTCLK frequency of 50 MHz.

Values are based on 20 pF capacitive load.

When configured as an output, TDMxRCLK acts as a second data link. See the MSC8122 Reference Manual for details.

Values are based on 10 pF capacitive load.

Figure 18. TDM Inputs Signals

Figure 19. TDM Output Signals

TDMxRCLK

TDMxRDAT

TDMxRSYN

300

301

302

303

304

TDMxTCLK

TDMxTDAT

TDMxTSYN

305

306

308

307

300

301

302

310

309

TDMxRCLK

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