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DSP56857 bảng dữ liệu(PDF) 455 Page - Freescale Semiconductor, Inc

tên linh kiện DSP56857
Giải thích chi tiết về linh kiện  Digitial Signal Controller
PDF  662 Pages
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nhà sản xuất  FREESCALE [Freescale Semiconductor, Inc]
Trang chủ  http://www.freescale.com
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DSP56857 bảng dữ liệu(HTML) 455 Page - Freescale Semiconductor, Inc

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Servicing the Host Interface
Host Interface Eight (HI8), Rev. 4
Freescale Semiconductor
16-29
Figure 16-17. HI8 Transmit Byte Low Register (TXL)
See Programmer’s Sheet on Appendix page B - 146
* Depends on HLEND setting
16.10.5 Host Side Registers After Reset
Table 16-13 shows the result of the three kinds of reset on bits in each of the HI8 registers seen
by the Host Processor. The hardware reset is caused by asserting the RESET pin. Execute the
RESET instruction to set the software reset. Execute the STOP instruction to set the Stop reset.
Base + $7/$6*
7
6
5
4
3
2
1
0
Read
Write
TXL
Reset
00000000
Table 16-13.
Host Side Registers After Reset
Register
Name
Register
Data
Reset Type
Hardware
Reset
Software
Reset
Stop Reset
ICR
All Bits
0
0
—
CVR
HC
0
0
0
HV[6:0]
$00
$00
—
ISR
HREQ
0
0
1 if TREQ is set, 0 if TREQ is cleared
DMA
0
0
—
HF[3:2]
0
0
—
TRDY
1
1
1
TXDE
1
1
1
RXDF
0
0
0
IVR
IV[7:0]
$0F
$0F
—
RX
RXH:RXL
Empty
Empty
Empty
TX
TXH:TXL
Empty
Empty
Empty



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