The ARM::CMSIS Pack contains an example of a Software Pack that contains device support, board support and software components. This Pack can be used as a reference for user generated Software Packs. It is available in the directory \CMSIS\Pack\Example. It contains a PDSC example file and all sub-directories containing the files referenced in the PDSC.
The example is a DFP for NXP's LPC1800 series of microcontrollers. It also contains BSP information and software components, mainly peripheral drivers. Some of the drivers adhere to the CMSIS-Driver standard. This is the layout of the sub-directories:

Directory	Content	Section in PDSC
Boards	CMSIS-RTOS Blinky uVision project running on the MCB1800 development board	<examples>
CMSIS_Driver	CMSIS-Driver compliant peripheral drivers	<component>
Device	CMSIS-CORE files for LPC1800 series	<device>
Documents	Documentation for devices and boards	<book>
Flash	Flash Programming Algorithms and a sub-directory called LPC18xx43xx_IAP containing a uVision project for IAP (In-Application Programming) support	<algorithm>
Images	Images of the MCB1800 development board	<board>
SVD	SVD file for LPC1800 series	<debug>

PDSC Example File

The PDSC file that is included in the example Pack is called Keil.LPC1800_DFP.pdsc.txt. The extension txt has been added to hide the file from development tools as it is not intended for installation. The file contains the following top level elements:

XML Element	Purpose
<package>	Publish Pack information like vendor, name, version, etc.
<devices>	Define four sub-families with 16 devices in total.
<boards>	Show MCB1800 development board information.
<conditions>	Declare required conditions for software components.
<components>	Include startup/system files, HAL drivers, and CMSIS-Driver 2.0 compliant peripheral drivers.
<examples>	Contain a CMSIS-RTOS Blinky example project for uVision running on the MCB1800 development board.

Directory CMSIS_Driver

The CMSIS_Driver directory contains the following CMSIS-Driver compliant peripheral drivers. These drivers are supporting the NXP LPC1800 series:

Driver	File	Software Component
Ethernet	EMAC_LPC18xx.c	::CMSIS-Driver:Ethernet MAC
SPI	SSP_LPC18xx.c	::CMSIS-Driver:SPI
I2C	I2C_LPC18xx.c	::CMSIS-Driver:I2C
MCI	MCI_LPC18xx.c	::CMSIS-Driver:MCI
USART	USART_LPC18xx.c	::CMSIS-Driver:USART
USB Device	USBD_LPC18xx.c	::CMSIS-Driver:USB Device:USB0/1
USB Host	USBH_LPC18xx.c	::CMSIS-Driver:USB Host:USB0/1

The following HAL drivers are required for the implementation of the CMSIS-Driver compliant peripheral drivers:

Driver	File	Software Component
General purpose DMA driver	GPDMA_LPC18xx.c	::Device:GPDMA
General purpose IO driver	GPIO_LPC18xx.c	::Device:GPIO
System control unit driver	SCU_LPC18xx.c	::Device:SCU

Directory Device

The Device directory has two sub-directories: Include and Source.

File	Purpose	Software Component
Include\LPC18xx.h	LPC1800 series header file	::CMSIS:CORE
Include\system_LPC18xx.h	LPC1800 series system header file	::CMSIS:Startup
Source\system_LPC18xx.c	LPC1800 series system source file	::CMSIS:Startup
Source\ARM\startup_LPC18xx.s	LPC1800 series startup assembler file for ARMCC	::CMSIS:Startup
Source\GCC\startup_LPC18xx.S	LPC1800 series startup assembler file for GCC	::CMSIS:Startup
Source\IAR\startup_LPC18xx.s	LPC1800 series startup assembler file for IAR	::CMSIS:Startup

Directory Documents

This directory incorporates the following documents:

File	Purpose	Section in PDSC
dui0552a_cortex_m3_dgug.pdf	Cortex-M3 Generic User Guide	<book> element of the device <family> element
ES_LPC18X0.pdf	LPC1800 Errata sheet	<book> element of the <device> section
LPC1850_30_20_10.pdf	LPC1800 Data sheet	<book> element of the <device> section
mcb1800.chm	MCB1800/4300 User's Guide	<book> element of the <boards> section
MCB1800v1-3-schematics.chm	MCB1800 schematics	<book> element of the <boards> section
UM10430.pdf	User manual for LPC1800	<book> element of the <device> section

Note: Some of these documents are only placeholders for copyright reasons.