other versions
| STRUCT NAND_SDR_TIMI(9) | Structures | STRUCT NAND_SDR_TIMI(9) |
NAME¶
struct_nand_sdr_timings - SDR NAND chip timings
SYNOPSIS¶
struct nand_sdr_timings {
u32 tALH_min;
u32 tADL_min;
u32 tALS_min;
u32 tAR_min;
u32 tCEA_max;
u32 tCH_min;
u32 tCHZ_max;
u32 tCLH_min;
u32 tCLR_min;
u32 tCLS_min;
u32 tCOH_min;
u32 tCS_min;
u32 tDH_min;
u32 tDS_min;
u32 tFEAT_max;
u32 tIR_min;
u32 tITC_max;
u32 tRC_min;
u32 tREA_max;
u32 tREH_min;
u32 tRHOH_min;
u32 tRHW_min;
u32 tRHZ_max;
u32 tRLOH_min;
u32 tRP_min;
u32 tRR_min;
u64 tRST_max;
u32 tWB_max;
u32 tWC_min;
u32 tWH_min;
u32 tWHR_min;
u32 tWP_min;
u32 tWW_min;
};
MEMBERS¶
tALH_min
ALE hold time
tADL_min
ALE to data loading time
tALS_min
ALE setup time
tAR_min
ALE to RE# delay
tCEA_max
CE# access time
tCH_min
CE# hold time
tCHZ_max
CE# high to output hi-Z
tCLH_min
CLE hold time
tCLR_min
CLE to RE# delay
tCLS_min
CLE setup time
tCOH_min
CE# high to output hold
tCS_min
CE# setup time
tDH_min
Data hold time
tDS_min
Data setup time
tFEAT_max
Busy time for Set Features and Get Features
tIR_min
Output hi-Z to RE# low
tITC_max
Interface and Timing Mode Change time
tRC_min
RE# cycle time
tREA_max
RE# access time
tREH_min
RE# high hold time
tRHOH_min
RE# high to output hold
tRHW_min
RE# high to WE# low
tRHZ_max
RE# high to output hi-Z
tRLOH_min
RE# low to output hold
tRP_min
RE# pulse width
tRR_min
Ready to RE# low (data only)
tRST_max
Device reset time, measured from the falling edge of R/B#
to the rising edge of R/B#.
tWB_max
WE# high to SR[6] low
tWC_min
WE# cycle time
tWH_min
WE# high hold time
tWHR_min
WE# high to RE# low
tWP_min
WE# pulse width
tWW_min
WP# transition to WE# low
DESCRIPTION¶
This struct defines the timing requirements of a SDR NAND chip. These information can be found in every NAND datasheets and the timings meaning are described in the ONFI specifications: www.onfi.org/~/media/ONFI/specs/onfi_3_1_spec.pdf (chapter 4.15 Timing Parameters)
All these timings are expressed in picoseconds.
AUTHOR¶
Thomas Gleixner <tglx@linutronix.de>
Author.
COPYRIGHT¶
| June 2017 | Kernel Hackers Manual 4.9. |