SAM5708B datasheet(63/89 Pages) ETC1

63 / 89 page

SAM5708B

SAM5708B.pdf

– Rev 14/05/2018

8.8.

Host Parallel Interface

This interface is used to connect the SAM5708B to an external host processor for control and fast

data transfer. Firmware can be downloaded at power-up through this interface.

8.8.1. Host Parallel Interface (HPI) mode 0

Pins used in mode 0 (A1=0):

D7-D0: 8-bit Data I/O

CS/: Chip Select from host (input)

A1-A0: Addresses from host (input), A1=0 to select mode 0, A0 for data selection

WR/: Write from host (input)

RD/: Read from host (input)

IRQ (optional): Interrupt Request (output)

This mode is typically used to send MIDI messages or other control data from the Host CPU

(master) to the SAM5708B (slave).

8.8.1.1.

HPI mode 0, Timings

tcslrdl

CS/

RD/

A[1:0]

D[7:0]

tprd

trdhcsh

tavdv

tarh

trdldv

tdrh

HPI mode 0, read cycle

tavrdh

tdvrdh

tdah

Parameter

Symbol

Min

Typ

Max

Unit

Chip select low to RD/ low

tcslrdl

RD/ pulse width

tprd

RD/ high to CS/ high

trdhcsh

Address valid to RD/ high

tavrdh

Address valid to data valid

tavdv

RD/ low to data valid

trdldv

Data valid to RD/ high

tdvrdh

Address out hold from RD/

tarh

Data out hold from RD/

tdrh

Data out hold from address out

tdah

Notes:

1. tcslrdl Min and trdhcsh Min can be reduced to 0 ns if 3 ns are added to tprd Min, tarh Min,

tdrh Min, tavrdh Min, tdvrdh Min

SAM5708B Datasheet(PDF) 63 Page - List of Unclassifed Manufacturers

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