Cypress CY4672 manual 9.1, 9.2, 9.3

				Contents
	3.3.8	Initialization		47
	3.3.9	Wireless Protocol Data Payload		47
		3.3.9.1	Packet Format 1	48
		3.3.9.2	Packet Format 2	48
		3.3.9.3	Packet Format 3	48
	3.3.10 Interrupt usage and timing			48
	3.3.11	Code Performance Analysis		49
3.4	Development Environment			49
	3.4.1	Tools		49
	3.4.2	Tips and Tricks		50
		3.4.2.1	M8C Sleep	50
		3.4.2.2	Watchdog Timer	50
	3.4.3	Critical Test Points		50
4. Keyboard				51
4.1	Introduction			51
	4.1.1	Design Features		51
4.2	Hardware Overview			51
	4.2.1	RDK Keyboard Assembly		52
	4.2.2	Schematic		54
	4.2.3	Keyboard Matrix		55
	4.2.4	Hardware Considerations		55
4.3	Firmware Architecture			56
	4.3.1	ROM/RAM usage		56
	4.3.2	enCoRe II Device Configuration		56
		4.3.2.1	Global Configuration	58
		4.3.2.2 SPI Master User Module		59
		4.3.2.3 Programmable Interval Timer User Module		59
		4.3.2.4	Flash Security	59
	4.3.3	Model		60
	4.3.4	Common Code		60
		4.3.4.1	Generated Library Code	60
		4.3.4.2	Radio Driver	60
		4.3.4.3	Protocol Module	61
		4.3.4.4	Flash Module	61
		4.3.4.5	ISR Module	61
		4.3.4.6	Timer Module	61
	4.3.5	Application Code		61
		4.3.5.1	Keyboard Module	61
		4.3.5.2	Mfgtest Module	62
		4.3.5.3	Battery Module	62
		4.3.5.4	Test Module	62
		4.3.5.5	Encrypt Module	63
	4.3.6	Configuration Options		63
		4.3.6.1 KEYBOARD_KEEP_ALIVE_TIMEOUT		63
		4.3.6.2 KEY_DOWN_DELAY_SAMPLE_PERIOD		63
		4.3.6.3 KEYBOARD_DEBOUNCE_COUNT		63
		4.3.6.4 KEYBOARD_MULTIMEDIA_SUPPORT		63
		4.3.6.5 KEYBOARD_TEST_MODES		64
		4.3.6.6 KEYBOARD_TEST_MODE_PERIOD		64
		4.3.6.7 PANGRAM_TEST_MODE		64
		4.3.6.8 KEYBOARD_BATTERY_VOLTAGE_SUPPORT		64
		4.3.6.9 LP_RDK_KEYBOARD_MATRIX		64
CY4672 Reference Design Guide, Document # 001-16968 Revision **				5

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