Motorola TMS320C6711D Manuel d'utilisateur Page 90

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Vue de la page 89

   
SPRS292 − OCTOBER 2005
90
POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443
HOST-PORT INTERFACE TIMING (CONTINUED)
1st halfword 2nd halfword
5
17
5
13
12
13
12
4
14
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] (input)
HRDY
3
HSTROBE
refers to the following logical operation on HCS, HDS1, and HDS2: [NOT(HDS1 XOR HDS2)] OR HCS.
Figure 44. HPI Write Timing (HAS Not Used, Tied High)
1st half-word 2nd half-word
5
17
5
13
12
13
12
4
14
3
11
10
11
10
11
10
11
10
11
10
11
10
HAS
HCNTL[1:0]
HR/W
HHWIL
HSTROBE
HCS
HD[15:0] (input)
HRDY
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 45. HPI Write Timing (HAS Used)
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