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DSP56303 数据表(PDF) 263 Page - Freescale Semiconductor, Inc

部件名 DSP56303
功能描述  DSP56303 USER?셎 MANUAL
PDF  292 Pages
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制造商  FREESCALE [Freescale Semiconductor, Inc]
网页  http://www.freescale.com
标志 FREESCALE - Freescale Semiconductor, Inc

DSP56303 数据表(HTML) 263 Page - Freescale Semiconductor, Inc

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Programming Sheets
DSP56303 User’s Manual, Rev. 2
Freescale Semiconductor
B-19
Figure B-10. Host Base Address and Host Port Control Registers
Application:
Date:
Programmer:
Sheet 2 of 5
HOST
7
6
543
2
1
0
15
BA5
BA3
BA7
BA4
BA6
*0
Host Base Address Register (HBAR) X:$FFFFC5 Read/Write
Reset = $80
8
BA8
BA9
BA10
*0
15
14
13
12
11
10
987654
3210
HAEN
HREN HCSEN HA9EN HA8EN HGEN
* = Reserved, Program as 0
HEN
*0
HAP
HRP
HCSP
HDDS
HROD
HMUX
HDSP
HASP
Host Port Control Register (HPCR)
X:$FFFFC4 Read/Write
Reset = $00
Host Acknowledge Enable
0
→ HACK = GPIO
Host Request Enable
0
→ HREQ/HACK = GPIO,
1
→ HREQ = HREQ, if HDRQ = 0
Host Chip Select Enable
0
→ HCS/HAI0 = GPIO,
1
→ HCS/HA10 = HC8, if HMUX = 0
1
→ HCS/HA10 = HC10, if HMUX = 1
Host Address Line 9 Enable
0
→ HA9 = GPIO, 1 → HA9 = HA9
Host Address Line 8 Enable
0
→ HA8 = GPIO, 1 → HA8 = HA8
Host GPIO Port Enable
0 = GPIO Pins Disable, 1 = GPIO Pin Enable
Host Acknowledge Priority
0 = HACK Active Low, 1 = HACK Active High
Host Chip Select Polarity
0 = HCS Active Low
Host Dual Data Strobe
0 = Singles Stroke, 1 = Dual Stoke
Host Multiplexed Bus
0 = Nonmultiplexed, 1 = Multiplexed
Host Address Strobe Polarity
0 = Strobe Active Low, 1 = Strobe Active High
Host Data Strobe Polarity
0 = Strobe Active Low, 1 = Strobe Active High
Host Enable
0
→ HI08 Disable
1
→ HI08 Enable
Pins = GPIO
If HDRQ & HREN = 1,
HACK = HACK
Host Request Open Drain
HDRQ
HROD
HREN/HEW
0
0
1
1
0
1
0
1
1
1
1
1
HTRQ & HRRQ Enable
1 = HCS Active High
Host Request Priority
HDRQ
HRP
0
0
1
1
0
1
0
1
HREQ Active Low
HREQ Active High
HTRQ,HRRQ Active Low
HTRQ,HRRQ Active High



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