LS1022A datasheet(18/71 Pages) FREESCALE

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Architecture

TWR-LS1021A Reference Manual, Rev. 0

Freescale Semiconductor

2-3

2.2.1

VDD/VDDC - Core and platform supply power

The TWR-LS1021A uses an LTC3616 to provide VDD and VDDC power.

Figure 2-2 shows an overview of this power supply.

Table 2-2. Power supply overview

LS1021A power

Nominal

voltage

Voltage range

Adjustment method

Measurement method

VDD / VDDC/

USB1_SDVDD/

USB1_SXVDD/

USB1_SPVDD/

TA_BB_VDD

1.00 V

0.97 - 1.03 V

None, fixed.

Meter across low-ohm R

S1VDD

1.00 V

0.97 - 1.03 V

None, fixed.

Meter across low-ohm R

G1VDD

1.35 V

1.283 - 1.417 V

None, fixed.

Meter across low-ohm R

VTT/VREF

0.675

0.629 - 0.723

None, fixed

Meter across low-ohm R

X1VDD

1.35 V

1.283 - 1.417 V

None, fixed.

Meter across low-ohm R

USB_HVDD

3.30 V

3.135 - 3.465 V

None, fixed.

Meter across low-ohm R

OVDD

O1VDD

TH_VDD

1.80 V

1.71 - 1.89 V

None, fixed.

Meter across low-ohm R

LVDD/L1VDD

(SW2[6]=ON)

2.5 V

2.375 - 2.625 V

None, fixed.

Meter across low-ohm R

L1VDD

(SW2[6]=OFF)

3.30 V

3.135 - 3.465 V

None, fixed.

Meter across low-ohm R

DVDD

D1VDD

3.30 V

3.135 - 3.465 V

None, fixed.

Meter across low-ohm R

BVDD

3.30 V

3.135 - 3.465 V

None, fixed.

Meter across low-ohm R

EVDD

3.30 V

3.135 - 3.465 V

None, fixed.

Meter across low-ohm R

PROG_SFP

PROG_MTR

1.80 V

1.71 - 1.89 V

None, fixed.

Meter across low-ohm R

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