EA-OEM-315 Embedded Artists, EA-OEM-315 Datasheet - Page 26

• Manufacturer Part Number: EA-OEM-315
• Description: KIT LPC3141 SODIMM 66X48 200POS
• Manufacturer: Embedded Artists
• Type: MCUr

Specifications of EA-OEM-315

• Contents: Board
• For Use With/related Products: LPC3141
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

NXP Semiconductors
LPC3141_3143
Preliminary data sheet
Fig 6. CGU block diagram
EXTERNAL
CRYSTAL
I2SRX_BCK1
I2SRX_BCK0
I2SRX_WS0
I2SRX_WS1
The LPC3141/3143 has 11 clock domains (n = 11). The number of fractional dividers m depends on the clock domain.
clock resources
6.16 Watchdog Timer (WDT)
OSCILLATOR
The watchdog timer can be used to generate a system reset if there is a CPU/software
crash. In addition the watchdog timer can be used as an ordinary timer.
how the watchdog timer module is connected in the system.
This module has the following features:
•
•
•
•
– Each base clock can be programmed to have any one of the clock sources as an
– Fractional dividers can be used to divide a base clock by a fractional number to a
– Fractional dividers support clock stretching to obtain a (near) 50% duty cycle
Register interface to reset all modules under software control.
Based on the input of the Watchdog timer (see also
generate a system-wide reset in the case of a system stall.
In the event of a software or hardware failure, generates a chip-wide reset request
when its programmed time-out period has expired (output m1).
Watchdog counter can be reset by a periodical software trigger.
input clock.
lower clock frequency.
output clock.
All information provided in this document is subject to legal disclaimers.
Rev. 0.16 — 27 May 2010
I
2
SYSTEM
S/AUDIO
PLL
PLL
SWITCHBOX
CLOCK DOMAIN 0
CLOCK DOMAIN n
BASE
subdomain clocks
Section
FRACTIONAL
FRACTIONAL
DIVIDER m
LPC3141/3143
DIVIDER 0
6.16), the CGU can
© NXP B.V. 2010. All rights reserved.
Figure 7
clock outputs
002aae916
to modules
shows
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