UM0434 datasheet(277/390 Pages) STMICROELECTRONICS

Part #	UM0434

Description	The primary objective of this user?셲 manual is to describe

PDF	390 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

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277 / 390 page

External core complex interfaces

UM0434

278/391

The

p_[d,i]_hburst signals indicate INCR for all burst transfers. The p_[d,i]_hunalign signal is

negated.

p_[d,i]_hsize indicates 64-bits, and all eight p_[d,i]_hbstrb signals are asserted.

The burst address is aligned to a 64-bit boundary and increments by double words. Note

that in this example four beats are shown, but in operation the burst may be of any length

including only a single beat.

Note:

Bursts can be interrupted immediately at any time and can be followed by any type of cycle.

No idle cycle is required.

Figure 45 shows functional timing for a burst read with wait-state transfer.

Figure 45.

Burst read with Wait-state transfer

The first cycle of the burst incurs a single wait-state.

nonseq

seq

...

addr x

addr x+8

addr x+16

addr x+24

incr

data x

data x+8

data x+16

data x+24

okay

Burst Read with wait-state

23456

m_clk

p_htrans

p_addr,p_hprot

p_hsize,

p_hbstrb, etc

p_hburst

p_hunalign

p_hwrite

p_hrdata

p_hwdata

p_hready

p_hresp

UM0434 Datasheet(PDF) 277 Page - STMicroelectronics

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