TMS320C6454

Fixed-Point Digital Signal Processor

www.ti.com

SPRS311A –APRIL 2006 –REVISED DECEMBER 2006

7.10.3 EMIFA Electrical Data/Timing

Table 7-42. Timing Requirements for AECLKIN for EMIFA(1) (2) (see Figure 7-31)

 

 

 

-720

 

 

NO.

 

 

-850

 

UNIT

 

 

-1000

 

 

 

 

 

 

 

 

 

MIN

MAX

 

1

t

Cycle time, AECLKIN

6(3)

40

ns

 

c(EKI)

 

 

 

 

2

tw(EKIH)

Pulse duration, AECLKIN high

2.7

 

ns

3

tw(EKIL)

Pulse duration, AECLKIN low

2.7

 

ns

4

tt(EKI)

Transition time, AECLKIN

 

2

ns

5

t

Period Jitter, AECLKIN

 

0.02E(4)

ns

 

J(EKI)

 

 

 

 

(1)The reference points for the rise and fall transitions are measured at VIL MAX and VIH MIN.

(2)E = the EMIF input clock (AECLKIN or SYSCLK4) period in ns for EMIFA.

(3)Minimum AECLKIN cycle times must be met, even when AECLKIN is generated by an internal clock source. Minimum AECLKIN times are based on internal logic speed; the maximum useable speed of the EMIF may be lower due to AC timing requirements.

(4)This timing only applies when AECLKIN is used for EMIFA.

5

1

4

2

AECLKIN

3

4

Figure 7-31. AECLKIN Timing for EMIFA

PRODUCT PREVIEW

Submit Documentation Feedback

C64x+ Peripheral Information and Electrical Specifications

151

Page 151
Image 151
Texas Instruments TMS320C6454 Emifa Electrical Data/Timing, Timing Requirements for Aeclkin for EMIFA1 2 see Figure