CS7410

36

DS553PP1

4.10

Power and Ground

the PLLs, internal logic, and IO pins. The PLLs and internal logic use 1.8 V supply voltage. The IO pins use

3.3 V supply voltage. An optional separate supply can be used to provide clean 3.3 V to the Sigma-Delta

DACs digital output pads. It is recommended that you use good layout techniques to provide isolation be-

tween the supply types on the board. Contact Cirrus Logic applications engineering for layout guidelines.

85

DAC_LN

O

GPO controlled by Mode bit 13

87

DAC_RP

O

GPO controlled by Mode bit 13

89

DAC_RN

O

GPO controlled by Mode bit 13

96

IEC958_O

B

GPIO controlled by Mode bit 14

Pin

Signal Name

Type

Description

1

PLL_GND

Ground for internal PLLs

2

PLL_1V8

1.8V for internal PLLs

14, 40, 73

CORE_GND

Ground for internal core logic

12, 38, 71

CORE_1V8

1.8V for internal core logic

19, 42, 64, 86

IO_GND

Ground for Digital I/Os

16, 44, 75

IO_3V3

3.3V for Digital I/Os

88

DAC_3V3

3.3V for Sigma Delta DAC Digital I/Os

Table 18. Power and Ground

Pin

Signal Name

Type

Description

Table 17. Redefined General Purpose Pins (Continued)