Samsung M8 manual Servo System Read and Write Operations

	5.2.3.5	Analog to Digital Converter (ADC) and FIR	31
5.3	SERVO SYSTEM		32
5.4	READ AND WRITE OPERATIONS		32
5.4.1		The Read Channel	32
5.4.2		The Write Channel	33
5.5	FIRMWARE FEATURES		33
5.5.1		Read Caching	33
5.5.2		Write Caching	34
5.5.3		Defect Management	35
5.5.4		Automatic Defect Allocation	35
5.5.5		Multi-burst ECC Correction	35
5.5.6		SMART	35
CHAPTER 6		SATA II INTERFACE	37
6.1	INTRODUCTION		37
SATA Terminology			37
6.2	PHYSICAL INTERFACE		39
6.3	SIGNAL SUMMARY		39
6.3.1		Signal Descriptions	39
6.3.2		I/O Register - Address	40
6.3.3		Control Block Register Descriptions	40
	6.3.3.1	Alternate Status Register (ex. 3F6h)	40
	6.3.3.2	Device Control Register (ex. 3F6h)	41
6.3.4		Command Block Register Descriptions	41
	6.3.4.1	Data Register (Ex. 1F0h)	41
	6.3.4.2	Features Register and Feature Extended Register (Ex. 1F1h)	41
	6.3.4.3	Sector Number Register and Sector Number Extended Register (Ex. 1F3h)	41
	6.3.4.4	Error Register (Ex. 1F1h)	41
	6.3.4.5	Sector Count Register and Sector Count Extended Register (Ex. 1F2h)	42
	6.3.4.6	Cylinder High Register and Cylinder High Extended Register (Ex. 1F5h)	42
	6.3.4.7	Cylinder Low Register and Cylinder Low Extended Register (Ex. 1F4h)	42
	6.3.4.8	Command Register (Ex. 1F7h)	42
	6.3.4.9	Device Register (Ex. 1F6h)	42
	6.3.4.10	Status Register (Ex. 1F7h)	43
CHAPTER 7		SATA II FEATURE SET	44
7.1	DEVICE ACTIVITY SIGNAL		44
7.2	STAGGERED SPIN-UPDISABLE CONTROL		44
7.3	AUTO-ACTIVATE IN DMA SETUP FIS		44
7.4	NATIVE COMMAND QUEUING (NCQ)		44
7.5	PHY. EVENT COUNTERS		45
7.6	SOFTWARE SETTINGS PRESERVATION		46
7.7	SATA POWER MANAGEMENT		46
CHAPTER 8		ATA COMMAND DESCRIPTIONS	47
8.1	COMMAND TABLE		47
8.2	COMMAND DESCRIPTIONS		48
8.2.1		Check Power Mode (E5h)	48
8.2.2		Download Micro Code (92h)	49
8.2.3		Device Configuration Overlay (B1h)	49
8.2.4		Execute Device Diagnostics (90h)	51
8.2.5		Flush Cache (E7h, EAh: extended)	51
8.2.6		Format Track (50h)	51
8.2.7		Identify Device (ECh)	51
8.2.8		Idle (E3h)	57
8.2.9		Idle Immediate (E1h)	57
8.2.10		Initialize Device Parameters (91h)	58
8.2.11		NOP (00h)	58
8.2.12		Read Buffer (E4h)	58
8.2.13		Read DMA (C8h, 25h:extended)	58

Spinpoint M8 Product Manual REV 2.3