SM320C6455-EP

FIXED-POINT DIGITAL SIGNAL PROCESSOR

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SPRS462B – SEPTEMBER 2007 – REVISED JANUARY 2008

HCS

HAS

HCNTL[1:0]

HR/W

HHWIL

 

 

13

 

 

 

 

16

 

 

 

 

 

 

 

 

 

 

16

 

 

 

 

15

 

 

 

 

15

37

 

 

 

 

 

 

 

 

 

13

 

 

 

 

 

 

 

 

 

37

 

14

 

 

 

 

 

 

 

 

 

 

 

HSTROBE(A)

3

 

3

 

1

2

1

2

HD[15:0]

 

 

 

 

38

 

 

4

7

 

 

 

6

 

 

HRDY(B)

 

 

 

A.HSTROBE refers to the following logical operation on HCS, HDS1, and HDS2: [NOT(HDS1 XOR HDS2)] OR HCS.

B.Depending on the type of write or read operation (HPID without auto-incrementing; HPIA, HPIC, or HPID with auto-incrementing) and the state of the FIFO, transitions on HRDY may or may not occur. For more detailed information on the HPI peripheral, see the TMS320C645x DSP Host Port Interface (HPI) User's Guide (literature number SPRU969).

Figure 7-44. HPI16 Read Timing (HAS Not Used, Tied High)

182

C64x+ Peripheral Information and Electrical Specifications

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Texas Instruments SM320C6455-EP manual HCS Has, HCNTL10, HR/W Hhwil Hstrobea, HD150, Hrdy B