Motorola TMS320C6711D Manual de usuario Pagina 89

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   
SPRS292 − OCTOBER 2005
89
POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443
HOST-PORT INTERFACE TIMING (CONTINUED)
1st halfword 2nd halfword
5
17
86
5
17
85
15
916
15
97
4
3
2
1
2
1
2
1
2
1
2
1
2
1
HAS
HCNTL[1:0]
HR/W
HHWIL
HSTROBE
HCS
HD[15:0] (output)
HRDY
(case 1)
HRDY
(case 2)
3
HSTROBE
refers to the following logical operation on HCS, HDS1, and HDS2: [NOT(HDS1 XOR HDS2)] OR HCS.
Figure 42. HPI Read Timing (HAS Not Used, Tied High)
HAS
HCNTL[1:0]
HR/W
HHWIL
HSTROBE
HCS
HD[15:0] (output)
HRDY (case 1)
HRDY
(case 2)
1st half-word 2nd half-word
5178
51785
15
916
15
97
4
3
11
10
11
10
11
10
11
10
11
1011
10
19
19
18
18
For correct operation, strobe the HAS
signal only once per HSTROBE active cycle.
HSTROBE
refers to the following logical operation on HCS, HDS1, and HDS2: [NOT(HDS1 XOR HDS2)] OR HCS.
Figure 43. HPI Read Timing (HAS Used)
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