Struct Ddr2Timing 

pub struct Ddr2Timing {

    pub grade: Ddr2Grade,
    pub tck_ps: u64,
    pub bl: u64,
    pub cl: u64,
    pub wl: u64,
    pub trcd: u64,
    pub trp: u64,
    pub trpa: u64,
    pub tras: u64,
    pub tras_max: u64,
    pub trc: u64,
    pub trrd: u64,
    pub tfaw: u64,
    pub twr: u64,
    pub twtr: u64,
    pub trtp: u64,
    pub trfc: u64,
    pub trefi: u64,
    pub tccd: u64,
}

A grade clocked: every rule in whole clocks. wl is cl − 1, trpa the precharge-all period.

Fields

grade: Ddr2Grade

tck_ps: u64

bl: u64

cl: u64

wl: u64

trcd: u64

trp: u64

trpa: u64

tras: u64

tras_max: u64

trc: u64

trrd: u64

tfaw: u64

twr: u64

twtr: u64

trtp: u64

trfc: u64

trefi: u64

tccd: u64

Implementations

impl Ddr2Timing

pub fn read_to_precharge(&self) -> u64

READ → PRECHARGE, same bank: AL + BL/2 − 2 + max(tRTP, 2).

pub fn write_to_precharge(&self) -> u64

WRITE → PRECHARGE, same bank: WL + BL/2 + tWR.

pub fn write_to_read(&self) -> u64

WRITE → READ, any bank: WL + BL/2 + tWTR.

pub fn read_to_write(&self) -> u64

READ → WRITE, any bank: BL/2 + 2, one idle clock between the read data and the write data.

pub fn cas_to_cas(&self) -> u64

Column command → column command in one direction: max(tCCD, BL/2), so no burst is cut short.

pub fn dram_timings(&self) -> DramTimings

This clocked part as the DRAM table ddr2_ctrl and the planner read. The table counts write recovery from the end of a burst issued with its command, so DDR2’s write latency rides in twr; it has one turnaround for both directions, so tturn takes the longer, WRITE→READ. WRITE→PRECHARGE and WRITE→READ are then exact, READ→WRITE is never shorter, and READ→PRECHARGE is the burst, exact while tRTP is two clocks: the table has no term for a longer one.

Trait Implementations

impl Clone for Ddr2Timing

fn clone(&self) -> Ddr2Timing

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Ddr2Timing

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl PartialEq for Ddr2Timing

fn eq(&self, other: &Ddr2Timing) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for Ddr2Timing

impl Eq for Ddr2Timing

impl StructuralPartialEq for Ddr2Timing