Block Diagram; Osc Signal Descriptions - NXP Semiconductors freescale KV4 Series Reference Manual

Block Diagram

29.3 Block Diagram
The OSC module uses a crystal or resonator to generate three filtered oscillator clock
signals.Three clocks are output from OSC module: OSCCLK for MCU system,
OSCERCLK for on-chip peripherals, and . The OSCCLK can only work in run mode.
OSCERCLK and can work in low power modes. For the clock source assignments, refer
to the clock distribution information of this MCU.
Refer to the chip configuration details for the external reference clock source in this
MCU.
The figure found here shows the block diagram of the OSC module.
OSC Clock Enable
Range selections
Low Power config
OSC clock selection
STOP

29.4 OSC Signal Descriptions

The table found here shows the user-accessible signals available for the OSC module.
534
EXTAL XTAL
Oscillator Circuits
OSC_EN
EREFSTEN
ERCLKEN
Control and Decoding
logic
Figure 29-1. OSC Module Block Diagram
KV4x Reference Manual, Rev. 2, 02/2015
Preliminary
OSC_CLK_OUT
Mux
ERCLKEN
XTL_CLK ERPS
EN
4096
Counter
Freescale Semiconductor, Inc.
OSCERCLK_UNDIV
DIV
OSCERCLK
OSC32KCLK
CNT_DONE_4096
OSCCLK