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DSP56857 Datasheet(PDF) 642 Page - Freescale Semiconductor, Inc

No. de pieza DSP56857
Descripción Electrónicos  Digitial Signal Controller
PDF  662 Pages
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Fabricante Electrónico  FREESCALE [Freescale Semiconductor, Inc]
Página de inicio  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

DSP56857 Datasheet(HTML) 642 Page - Freescale Semiconductor, Inc

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Application:
Date:
Programmer:
Sheet
Appendix B - Programmer’s Sheets, Rev. 4
Freescale Semiconductor
B-140
Preliminary
HI8
HI8 Receive Data Register (HRX)
Bits
Name
Description
15 - 0
HRX
HI8 Receive Data Register
The read-only HI8 Receive Data (HRX) register is used for Host-to-DSC data transfers. The
HRX register is loaded with 16-bit data from the transmit data registers TXH/TXL on the Host
Side when both the transmit data register empty TXDE on the Host Side, and DSC Host Receive
Data Full (HRDF) bits are cleared. This transfer operation sets TXDE and HRDF bits. The HRX
register contains valid data when the HRDF bit is set. Reading HRX clears HRDF. The DSC
may program the HRIE bit to cause a Host Receive Data interrupt when HRDF is set.
4 of 10
HI8 Receive Data
Register (HRX)
$1FFFD8 + $2
Bits
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Read
HIGH BYTE (FROM HTX)
LOW BYTE (FROM LTX)
Write
Reset
0
00
000
00
00
00
00
00
denotes Reserved Bits



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