Texas Instruments SM320C6455-EP manual Clks Clkr, Clkx

Models: SM320C6455-EP

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SM320C6455-EP

FIXED-POINT DIGITAL SIGNAL PROCESSOR

www.ti.com

SPRS462B – SEPTEMBER 2007 – REVISED JANUARY 2008

CLKS

 

 

 

 

1

 

 

 

2

 

 

 

3

 

 

 

3

 

 

CLKR

 

 

 

 

4

 

 

 

4

 

 

FSR (int)

5

 

 

 

 

 

 

6

 

 

FSR (ext)

 

 

 

 

7

8

 

 

 

 

DR

Bit(n-1)

(n-2)

(n-3)

 

2

 

 

 

3

 

 

CLKX

3

 

 

 

 

 

 

9

 

 

FSX (int)

 

 

 

11

10

FSX (ext) FSX (XDATDLY=00b)

 

 

14

13 (A)

 

 

12

 

 

 

13 (A)

 

 

DX

Bit 0

Bit(n-1)

(n-2)

(n-3)

A.Parameter No. 13 applies to the first data bit only when XDATDLY 0.

B.The CLKS signal is shared by both McBSP0 and McBSP1 on this device.

Figure 7-52. McBSP Timing(B)

Table 7-61. Timing Requirements for FSR When GSYNC = 1 (see Figure 7-53)

 

 

 

-720

 

 

 

 

-850

 

NO.

 

 

A-1000/-1000

 

 

 

-1200

 

 

 

 

MIN

MAX

1

tsu(FRH-CKSH)

Setup time, FSR high before CLKS high

4

 

2

th(CKSH-FRH)

Hold time, FSR high after CLKS high

4

 

CLKS

1

2

FSR external CLKR/X (no need to resync)

CLKR/X (needs resync)

Figure 7-53. FSR Timing When GSYNC = 1

UNIT

ns ns

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C64x+ Peripheral Information and Electrical Specifications

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Texas Instruments SM320C6455-EP manual Clks Clkr, Clkx