SM320C6424-EP Datasheet, PDF (183/236 Pages) Texas Instruments – FIXED-POINT DIGITAL SIGNAL PROCESSOR

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HCS
SM320C6424-EP
FIXED-POINT DIGITAL SIGNAL PROCESSOR
SPRS580 – JUNE 2009
HAS
1
HCNTL[1:0]
1
HR/W
1
HHWIL
(A)(C)
HSTROBE
2
2
2
3
2
1
2
1
2
1
4
3
HD[15:0]
(output)
(B)
HRDY
15
6
8
5
13
7
15
14
6
1st Half-Word
14
8
2nd Half-Word
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 TMS320C642x Host Port Interface (HPI) User’s Guide
(literature number SPRUEM9).
C. HCS reflects typical HCS behavior when HSTROBE assertion is caused by HDS1 or HDS2. HCS timing requirements are
reflected by parameters for HSTROBE.
Figure 6-23. HPI16 Read Timing (HAS Not Used, Tied High)
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Peripheral Information and Electrical Specifications 183