SPEAR320 datasheet(62/73 Pages) STMICROELECTRONICS

部件名	SPEAR320

功能描述	Embedded MPU with ARM926 core, optimized for factory automation and consumer applications

PDF	73 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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62 / 73 page

Timing requirements

SPEAr320

62/73

Doc ID 16755 Rev 5

Caution:

Data in Table 43 subject to SMII functional issue described in the SPEAr320 errata sheet.

7.11

SMI - Serial memory interface timing characteristics

Figure 23.

SMI I/O waveforms

Table 43.

SMII timings

Symbol

Description

Min

Max

Unit

tCK

SMII clock

Setup time requirement for SMII_RX

-0.90

Hold time requirement for receive

SMII_RX

2.904

SMII_CLKIN to SMII_TX output

delay

4.12

14.17

Table 44.

SMI timings

Symbol

Description

Min

Max

Unit

tCK

SMI clock period

SMI_CLK to SMI_DATAOUT output delay

-2.96

3.05

Setup requirement for SMI_DATAIN

9.69

Hold requirement for SMI_DATAIN

-2.53

tCSf

Min and max delay of falling edge of SMI_CS_0 , 1 w.r.t

SMI_CLK

-3.0

2.9

tCSr

Min and max delay of rising edge of SMI_CS_0 , 1 w.r.t

SMI_CLK

-2.8

2.8

SMI_CLK

SMI_DATAIN

tCK

tCSf

tCSr

SMI_DATAOUT

SMI_CS_0,1

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