Texas Instruments TMS320C6202 Manual de usuario Pagina 54

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TMS320C6202
FIXED-POINT DIGITAL SIGNAL PROCESSOR
SPRS072B – AUGUST 1998 – REVISED AUGUST 1999
54
POST OFFICE BOX 1443 HOUSTON, TEXAS 77251–1443
EXPANSION BUS SYNCHRONOUS HOST PORT TIMING (CONTINUED)
Addr D1 D2
15
14
12
11
8
7
6
5
44
22
11
XCLKIN
XAS
XW/R
XW/R
XBLAST
XD[31:0]
XRDY
XBOFF
XHOLD
XHOLDA
XHOLD
#
XHOLDA
#
XBE[3:0]/XA[5:2]
§
XW/R input/output polarity selected at boot
XBLAST output polarity is always active low.
§
XBE[3:0]
/XA[5:2] operates as byte enables XBE[3:0] during host-port accesses.
Internal arbiter enabled
#
External arbiter enabled
||
This diagram illustrates XBOFF timing. Bus arbitration timing is shown in Figure 38 and Figure 39.
Figure 35. ’C6202 as Bus Master—BOFF Operation
||
ADVANCE INFORMATION
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