Samsung 100737108-A

Spinpoint M8-DVR OEM Product Manual REV 1.0

DATA CHARACTER-A data character is a co mbination of a byte value with the control variable equal to D.

DWORD-A Dword is thirty-two (32) bits of data. A Dword may be represented as 32 bits, as two adjacent

words, or as four adjacent bytes. When s hown as bits the least significant bit is bit 0 and most significant

bit is

bit 31. The most significant bit is shown on the left. When shown as words the least significant word (lower)

is word 0 and the most significant (upper) word is word 1. When shown as bytes the least significant byte is

byte 0 and the most significant byte is byte 3.

DWORD SYNCHRINIZATION- The state in which a receiver has recognized the comma sequence and is

producing an aligned data stream of Dwords (four contiguous b ytes) from the zero-reference of the comma

character.

ENCODED CHARACTER-An encoded character is the output of the 8b/10b encoder – the result of

encoding a character. An encoded character consists of 10 bits, where bit 0 is the most significant bit and bit

9 is the least s ignificant. The bits in an encoded character are symbolically referred to as “abcdeifghj” where

“a” corresponds to bit 0 and “j” corresponds to bit 9.

ELASTICITY BUFFER-The elasticity buffer is a portion of the receiver where character slipping and/o r

character alignment is performed.

FIRST PARTY DMA ACCESS -First-party DMA access is a method by which a device acc esses host

memory.

FIRST PARTY DMA MODE (FPDMA) - A device which is operating in First-party DMA mode uses First-

party DMA as a primary communications method between the host and the device. A software driver u ses

legacy mode commands to place the device into First-party DMA mode of operation. The legacy-mode

command places the device into the First-party DMA mode of operation and the command protocol used between

a device and host when in First-party DMA mode are not specified by this specification.

FIRST DATA PHASE- The FPDMA Data Phase is the period from the reception of a DMA Setup FIS until

either the exhaustion of the associated data transfer count or the assertion of the ERR bit in the shadow Status

FIS-Stands for Frame Information Structure.

FRAME UNFIORMATION STRUCTURE-The user payload of a frame, does not include th e SOF, CRC,

and EOF delimiters.

Frame-A frame is an indivisible unit of information exchanged between a host and device. A frame consists

of a SOF primitive, a Frame Information Structure, a CRC calculated over the contents of the FIS, and an

EOF primitive-

LEGACY MODE -Legacy mode is the mode of operation which provides software-transparent

communication of commands and status between a host and device using the ATA Command Block and

Control Block registers.

LEGAL CHARACTER-Legal character is one for which there exists a valid decoding, either into the data

character or control character fields. Due to running disparity constraints n ot all 10-bit combinations result

in a

legal character. Additional usage restrictions in Serial ATA result in a further reduction in the SA TA

defined control character space.

OOB SIGNAL DETECTOR-This block decodes Out of Band signal from the high speed input signal path.