CS5376A datasheet(21/107 Pages) CIRRUS

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CS5376A

4. POWER SUPPLIES

The CS5376A has three sets of power supply in-

puts. Two sets supply power to the I/O pins of the

device (VDD1, VDD2), and the third supplies

power to the logic core (VD). The I/O pin power

supplies determine the maximum input and output

voltages when interfacing to peripherals, and the

logic core power supply largely determines the

power consumption of the CS5376A.

4.1 Pin Descriptions

VDD1, GND1 - Pins 54,53

Sets the interface voltage to a microcontroller and

system telemetry. Can be driven with voltages from

3.3 V to 5 V.

VDD1 powers pins 1-5 and 41-64:

TRST, TMS, TCK, TDI, TDO

GPIO6 - GPIO11:EECS

SSO, SCK1, SSI, MISO, MOSI, SINT,

RESET, BOOT, TIMEB, CLK, SYNC

SDDAT, SDRDY, SDCLK, SDTKO, SDTKI

VDD2, GND2 - Pins 11, 25, 24, 38

Sets the interface voltage to the modulators, test

DAC, and serial peripherals. Can be driven with

voltages from 3.3 V to 5 V.

VDD2 powers pins 8-37:

TBSCLK, TBSDATA

MCLK/2, MCLK, MSYNC

MDATA1 - MDATA4

MFLAG1 - MFLAG4

SI1 - SI4, SO, SCK2

GPIO0:CS0 - GPIO5

TRST

TMS

TCK

TDI

TDO

GND

TBSCLK

TBSDATA

DNC

VDD2

MCLK/2

MCLK

MSYNC

MDATA4

MFLAG4

17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32

64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49

CS5376A

VDD1 Pad Ring

VDD2 Pad Ring

Pad Ring

SCK1

SSO

GPIO11:EECS

GPIO10

GPIO9

GPIO8

GPIO7

GPIO6

GND

GND2

GPIO5

GPIO4:CS4

GPIO3:CS3

GPIO2:CS2

GPIO1:CS1

Pad Ring

Figure 10. Power Supply Block Diagram

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