CC3235MODASF datasheet(55/100 Pages) TI1

55 / 100 page

McACLKX

McAFSX

McAXR0/1

McACLKX

McAFSX

McAXR0/1

CC3235MODAS, CC3235MODASF

www.ti.com

SWRS233 – OCTOBER 2019

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Product Folder Links: CC3235MODAS CC3235MODASF

Specifications

(1)

Timing parameter assumes a maximum load of 20 pF.

5.19.5.2 I2S

The McASP interface functions as a general-purpose audio serial port optimized for multichannel audio

applications and supports transfer of two stereo channels over two data pins. The McASP consists of

transmit and receive sections that operate synchronously and have programmable clock and frame-sync

polarity. A fractional divider is available for bit-clock generation.

5.19.5.2.1 I2S Transmit Mode

Figure 5-10 shows the timing diagram for the I2S transmit mode.

Figure 5-10. I2S Transmit Mode Timing Diagram

Table 5-15 lists the timing parameters for the I2S transmit mode.

Table 5-15. I2S Transmit Mode Timing Parameters

ITEM

NAME

DESCRIPTION

MIN

MAX

UNIT

fclk

(1)

Clock frequency

9.216

MHz

tLP(1)

Clock low period

1/2 fclk

tHT

(1)

Clock high period

1/2 fclk

tOH

(1)

TX data hold time

(1)

Timing parameter assumes a maximum load of 20 pF.

5.19.5.2.2 I2S Receive Mode

Figure 5-11 shows the timing diagram for the I2S receive mode.

Figure 5-11. I2S Receive Mode Timing Diagram

Table 5-16 lists the timing parameters for the I2S receive mode.

Table 5-16. I2S Receive Mode Timing Parameters

ITEM

NAME

DESCRIPTION

MIN

MAX

UNIT

fclk

(1)

Clock frequency

9.216

MHz

tLP(1)

Clock low period

1/2 fclk

tHT

(1)

Clock high period

1/2 fclk

tOH

(1)

RX data hold time

tOS

(1)

RX data setup time

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