IO13PDB0V0 datasheet(117/197 Pages) MICROSEMI

117 / 197 page

SmartFusion Customizable System-on-Chip (cSoC)

Re vi s i on 12

5 - 3

VCCFPGAIOB5

Supply

Digital supply to the FPGA fabric I/O bank 5 (west FPGA I/O bank) for the output buffers

and I/O logic.

Each bank can have a separate VCCFPGAIO connection. All I/Os in a bank will run off

the same VCCFPGAIO supply. VCCFPGAIO can be 1.5 V, 1.8 V, 2.5 V, or 3.3 V,

nominal voltage. Unused I/O banks should have their corresponding VCCFPGAIO pins

tied to GND.

VCCLPXTAL

Supply

Analog supply to the low power 32 KHz crystal oscillator. Always power this pin.1

VCCMAINXTAL

Supply

Analog supply to the main crystal oscillator circuit. Always power this pin.1

VCCMSSIOB2

Supply

Supply voltage to the microcontroller subsystem I/O bank 2 (east MSS I/O bank) for the

output buffers and I/O logic.

Each bank can have a separate VCCMSSIO connection. All I/Os in a bank will run off

the same VCCMSSIO supply. VCCMSSIO can be 1.5 V, 1.8 V, 2.5 V, or 3.3 V, nominal

voltage. Unused I/O banks should have their corresponding VCCMSSIO pins tied to

GND.

VCCMSSIOB4

Supply

Supply voltage to the microcontroller subsystem I/O bank 4 (west MSS I/O bank) for the

output buffers and I/O logic.

Each bank can have a separate VCCMSSIO connection. All I/Os in a bank will run off

the same VCCMSSIO supply. VCCMSSIO can be 1.5 V, 1.8 V, 2.5 V, or 3.3 V, nominal

voltage. Unused I/O banks should have their corresponding VCCMSSIO pins tied to

GND.

VCCPLLx

Supply

Analog 1.5 V supply to the PLL. Always power this pin.

VCCRCOSC

Supply

Analog supply to the integrated RC oscillator circuit. Always power this pin.1

VCOMPLAx

Supply

Analog ground for the PLL

VDDBAT

Supply

External battery connection to the low power 32 KHz crystal oscillator (along with

VCCLPXTAL), RTC, and battery switchover circuit. Can be pulled down if unused.

Name

Type

Description

Notes:

1. The following 3.3 V supplies should be connected together while following proper noise filtering practices: VCC33A,

VCC33ADCx, VCC33AP, VCC33SDDx, VCCMAINXTAL, and VCCLPXTAL.

2. The following 1.5 V supplies should be connected together while following proper noise filtering practices: VCC,

VCC15A, and VCC15ADCx.

3. For more details on VCCPLLx capacitor recommendations, refer to the application note AC359, SmartFusion cSoC

Board Design Guidelines, the "PLL Power Supply Decoupling Scheme" section.

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