Cirrus-logic AN248 Manual de usuario descargar pdf (Pagina 4)

AN248

2.2 Transitioning from the CS4334/5/8

2.2.1 Hardware changes

The CS4344 family adds two filter pins (which require capacitors) to the eight pins of the CS4334

family. The CS4344 family also uses a smaller lead pitch which takes up about 50% less space than

theCS4334family.

Figure 3 shows an example schematic for the CS4334. Figure 1 shows the modified new schematic

for the CS4344

The changes made between Figures 3 and 1 were as follows:

• Removed the 267 kΩ resistors R1 and R4.

• Added the 10 µF C7, and added the 3.3 µFC8.

• changed R3 and R5 to 470 Ω.

• replaced CS4334 with CS4344.

• Note that the same C4 and C6 capacitors may be used.

The following table shows the pin for pin mapping between the two part families:

Table 4. CS4334 to CS4344 pin mapping

Note that the AOUTL and AOUTR pins have changed position.

pin name CS4334 family CS4344 family

SDATA > SDIN 11

DEM/SCLK 22

LRCK 33

MCLK 44

AOUTR 510

GND 68

VA 79

AOUTL 87

VQ 5

FILT+ 6

Figure 3. CS4334 family Design Schematic

1 2 3 4 5

Sin comentarios

Cirrus-logic AN248 Manual de usuario Pagina 4