Altera SerialLite II Protocol Manual de usuario descargar pdf (Pagina 26)

26 Altera Corporation

SerialLite II Protocol Reference Manual

Physical Layer Description

Training Sequence One Ordered Set Sequence {|TS1|}

The first link training sequence consists of eight ordered sets as shown in

Table 2–13. This sequence is used to initialize the links.

Training Sequence Two Ordered Set Sequence {|TS2|}

The second link training sequence consists of eight ordered sets as shown

in Table 2–14. This sequence is used to indicate that link initialization is

complete, and forms part of the link-deskew sequence.

Table 2–13. {|TS1|} Composition

Field Ordered Set Description

TC ||COM|| Comma (or Sync) identifier

LN ||DAT|| Lane number. A number from 0 to 255 (in

8-bit space, encoded before transmission,

with 0 representing the most significant

lane)

MLN ||DAT|| Maximum lane number. A number from 0 to

255 (in 8-bit space, encoded before

transmission, with 0 representing a single

lane implementation)

TSZ ||DAT|| Transfer size. Valid numbers are 1, 2, and

4. The transfer size defines the number of

columns for a contiguous burst of data; 1

column, 2 columns, 4 columns, and all

other values are reserved.

RSV 3x||DAT|| Reserved. Set to all zeros (D0.0); repeated

three times

T1 ||DAT|| First training sequence identifier (D10.2)

Table 2–14. {|TS2|} Composition