T1022NXE7MQA
| Model | T1022NXE7MQA |
| Description | 32-BIT, 1200MHz, RISC PROCESSOR, PBGA780 |
| PDF file | Total 197 pages (File size: 1M) |
| Chip Manufacturer | PHILIPS |
Hardware design considerations
• The ferrite beads should be placed in parallel to reduce voltage droop.
• Besides a linear regulator, a low-noise, dedicated switching regulator can be used. 10
mVp-p, 50 kHz - 500 MHz is the noise goal.
4.2.5 USB_HV
DD
and USB_OV
DD
power supply filtering
USB_HV
DD
and USB_OV
DD
must be sourced by a filtered 3.3 V and 1.8 V voltage
source using a star connection. An example solution for USB_HV
DD
and USB_OV
DD
filtering, where USB_HV
DD
and USB_OV
DD
are sourced from a 3.3 V and 1.8 V voltage
source, is illustrated in the following figure. The component values in this example filter
is system dependent and are still under characterization, component values may need
adjustment based on the system or environment noise.
Where:
• C1 = 0.003 μF ± 10%, X5R, with ESL ≤ 0.5 nH
• C2 and C3 = 2.2 μF ± 10%, X5R, with ESL ≤ 0.5 nH
• F1 = 120 Ω at 100 MHz 2A 25% 0603 Ferrite (for example, Murata
BLM18PG121SH1)
• Bulk and decoupling capacitors are added, as needed, per power supply design.
Bulk and
USB_HV
DD
or
USB_OV
DD
decoupling
capacitors
C1
C2
C3
F1
3.3 V or
1.8 V source
GND
Figure 78. USB_HV
DD
and USB_OV
DD
power supply filter circuit
4.2.6 USB_SV
DD
power supply filtering
USB_SV
DD
must be sourced by a filtered V
DD
or V
DDC
using a star connection. An
example solution for USB_SV
DD
filtering, where USB_SV
DD
is sourced from V
DD
, is
illustrated in the following figure. The component values in this example filter is system
dependent and are still under characterization, component values may need adjustment
based on the system or environment noise.
Where:
• C1 = 2.2 μF ± 20%, X5R, with Low ESL (for example, Panasonic ECJ0EB0J225M)
QorIQ T1042, T1022 Data Sheet, Rev. 2, 06/2015
174
Freescale Semiconductor, Inc.
