CS5361

16

DS467F2

4.0 APPLICATIONS

4.1

Operational Mode/Sample Rate Range Select

The output sample rate, Fs, can be adjusted from 2 kHz to 204 kHz. The CS5361 must be set to the proper speed

mode via the mode pins, M1 and M0. Refer to Table 1.

4.2

System Clocking

The device supports operation in either Master Mode, where the left/right and serial clocks are synchronously gen-

erated on-chip, or Slave Mode, which requires external generation of the left/right and serial clocks. The device also

includes a master clock divider in Master Mode where the master clock will be internally divided prior to any other

internal circuitry when MDIV is enabled, set to logic 1. In Slave Mode, the MDIV pin needs to be disabled, set to logic

0.

4.2.1

Slave Mode

LRCK and SCLK operate as inputs in Slave mode. The left/right clock must be synchronously derived from the mas-

ter clock and be equal to Fs. It is also recommended that the serial clock be synchronously derived from the master

clock and be equal to 64x Fs to maximize system performance. Refer to Table 2 for required clock ratios.

Table 2. CS5361 Slave Mode Clock Ratios

M1 (Pin 14)

M0 (Pin 13)

MODE

Output Sample Rate (Fs)

0

0

Single Speed Mode

2 kHz - 51 kHz

0

1

Double Speed Mode

50 kHz - 102 kHz

1

0

Quad Speed Mode

100 kHz - 204 kHz

11

Reserved

Table 1. CS5361 Mode Control

Single Speed Mode

Fs = 2 kHz to 51 kHz

Double Speed Mode

Fs = 50 kHz to 102 kHz

Quad Speed Mode

Fs = 100 kHz to 204 kHz

MCLK/LRCK Ratio

256x, 512x

128x, 256x

128x

SCLK/LRCK Ratio

32x, 64x, 128x

32x, 64x

32x, 64x