SAM5708B datasheet(70/89 Pages) ETC1

70 / 89 page

SAM5708B

SAM5708B.pdf

– Rev 14/05/2018

Parameter

Symbol

Min

Typ

Max

Unit

Chip select low to WR/ low

tcslwrl

(see note 1)

WR/ pulse width

tpwr

WR/ high to WR/ low

twrhwrl

WR/ high to CS/ high

twrhcsh

(see note 1)

Address valid to WR/ high

tavwrh

Data valid to WR/ high

tdvwrh

Address out hold from WR/

tawh

Data out hold from WR/

tdwh

WR/ high to XFR_RDY low

twrhdrl

XFR_RDY pulse width in write mode

tpdrwr

Notes:

2. tcslwrl Min and twrhcsh Min can be reduced to 0 ns if 3 ns are added to tpwr Min, tawh Min,

tdwh Min, tavwrh Min, tdvwrh Min

8.8.2.3.

Timing examples for sound bank loading via HPI mode 1

1) SDRAM, burst x8, 8-bit mode, no traffic (all P24 stopped)

XFR_READY low typ = 15 to 45 ns

Time for transferring 1Kx16 : Write mode=25us, Read mode=32us

---> write a 256Mx16 sound bank = less than 7 seconds

2) SDRAM, burst x8, 16-bit mode, high traffic (all P24 on, 256 voice poly accessing also SDRAM

simultaneously)

XFR_READY low typ = 250ns to 400ns (write mode), 150ns to 250ns (read mode)

Time for transferring 1Kx16 : Write mode=47us, Read mode=37us

---> write a 256Mx16 sound bank = less than 14 seconds

SAM5708B Datasheet(PDF) 70 Page - List of Unclassifed Manufacturers

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