Texas Instruments SM320C6455-EP manual Urclk URDATA70 URADDR40 N Urclav Urenb Ursoc, P48 0x1F

Models: SM320C6455-EP

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SM320C6455-EP

FIXED-POINT DIGITAL SIGNAL PROCESSOR

www.ti.com

SPRS462B – SEPTEMBER 2007 – REVISED JANUARY 2008

Table 7-110. Timing Requirements for UTOPIA Slave Receive (see Figure 7-77)

NO.

1tsu(URDV-URCH)

2th(URCH-URDV)

3tsu(URAV-URCH)

4th(URCH-URAV)

9tsu(URENBL-URCH)

10th(URCH-URENBL)

11tsu(URSH-URCH)

12th(URCH-URSH)

 

 

-720

 

 

 

-850

 

 

A-1000/-1000

UNIT

 

 

-1200

 

 

MIN

MAX

 

Setup time, URDATA valid before URCLK high

4

 

ns

Hold time, URADDR valid after URCLK high

1

 

ns

Setup time, URADDR valid before URCLK high

4

 

ns

Hold time, URADDR valid after URCLK high

1

 

ns

Setup time, URENB low before URCLK high

4

 

ns

Hold time, URENB low after URCLK high

1

 

ns

Setup time, URSOC high before URCLK high

4

 

ns

Hold time, URSOC high after URCLK high

1

 

ns

Table 7-111. Switching Characteristics Over Recommended Operating Conditions for UTOPIA Slave

Receive Cycles (see Figure 7-77)

NO.

5

6

7

8

td(URCH-URCLAV)

td(URCH-URCLAVL)

td(URCH-URCLAVHZ)

tw(URCLAVL-URCLAVHZ)

 

-720

 

 

 

-850

 

 

PARAMETER

A-1000/-1000

UNIT

 

-1200

 

 

 

MIN

MAX

 

Delay time, URCLK high to URCLAV driven active value

3

12

ns

Delay time, URCLK high to URCLAV driven inactive low

3

12

ns

Delay time, URCLK high to URCLAV going Hi-Z

9

18.5

ns

Pulse duration (low), URCLAV low to URCLAV Hi-Z

3

 

ns

URCLK

URDATA[7:0]

URADDR[4:0] N

URCLAV

URENB

URSOC

1

P48

0x1F

N

2

3

N+1

10

H1

H2

H3

4

 

 

0x1F

N+2

0x1F

 

7

 

5

8

 

6

 

N+1

 

N+2

9

 

 

11

12

 

A.The UTOPIA Slave module has signals that are middle-level signals indicating a high-impedance state (i.e., the URCLAV and URSOC signals).

Figure 7-77. UTOPIA Slave Receive Timing(A)

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Texas Instruments SM320C6455-EP manual Urclk URDATA70 URADDR40 N Urclav Urenb Ursoc, P48 0x1F