TMS320C2811 Datasheet

  • TMS320C2811

  • 具有片内 ROM 的 32 位数字信号控制器

  • 2601.82KB

  • 162页

  • TI

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TMS320F2810, TMS320F2812
DIGITAL SIGNAL PROCESSORS
SPRS174B 鈥?APRIL 2001 鈥?REVISED SEPTEMBER 2001
external interface, XINTF (F2812 only)
This section gives a top-level view of the external interface (XINTF) that is implemented on the F2812 device.
The external interface is a non-multiplexed asynchronous bus, similar to the C240x external interface. The
external interface on the F2812 is mapped into five fixed zones shown in Figure 3.
Figure 3 shows the F2812 XINTF signals.
Data Space
0x0000鈥?000
XD(15:0)
Prog Space
XA(18:0)
0x0000鈥?000
0x0000鈥?000
0x0000鈥?000
0x0008鈥?000
0x0010鈥?000
XINTF Zone 6
(1M
16)
0x0020鈥?000
0x003F鈥揅000
XINTF Zone 7
(16K
16)
(mapped here if MP/MC =1)
XZCS6
XZCS6AND7
XINTF Zone 2
(512K
16)
XZCS2
XINTF Zone 0
(8K
16)
XINTF Zone 1
(8K
16)
XZCS0
XZCS1
XZCS7
0x0040鈥?000
XWE
XRD
XRNW
XREADY
XMP/MC
XHOLD
XHOLDA
XCLKOUT (see Note D)
NOTES: A. The mapping of XINTF Zone 7 is dependent on the XMP/MC device input signal and the MP/MC mode bit (bit 8 of XINTCNF2
register). Zones 0, 1, 2, and 6 are always enabled.
B. Each zone can be programmed with different wait states, setup and hold timings, and is supported by zone chip selects (XZCS0,
XZCS1, XZCS2, XZCS6AND7), which toggle when an access to a particular zone is performed. These features enable glueless
connection to many external memories and peripherals.
C. The chip selects for Zone 6 and 7 are ANDed internally together to form one chip select (XZCS6AND7). Any external memory
that is connected to XZCS6AND7 is dually mapped to both Zones 6 and Zone 7. This means that if Zone 7 is disabled (via the
MP/MC mode) then any external memory is still accessible via Zone 6 address space.
D. XCLKOUT is also pinned out on the F2810.
Figure 3. External Interface Block Diagram
POST OFFICE BOX 1443
鈥?/div>
HOUSTON, TEXAS 77251鈥?443
27
PRODUCT PREVIEW

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