DSP56303 FREESCALE [Freescale Semiconductor, Inc], DSP56303 Datasheet - Page 263

• Manufacturer Part Number: DSP56303
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

Freescale Semiconductor
Host Data Strobe Polarity
0 = Strobe Active Low, 1 = Strobe Active High
Host Address Strobe Polarity
0 = Strobe Active Low, 1 = Strobe Active High
Host Multiplexed Bus
0 = Nonmultiplexed, 1 = Multiplexed
Host Dual Data Strobe
0 = Singles Stroke, 1 = Dual Stoke
Host Chip Select Polarity
0 = HCS Active Low
1 = HCS Active High
Host Acknowledge Priority
0 = HACK Active Low, 1 = HACK Active High
HDRQ
Application:
HOST
0
0
1
1
HTRQ & HRRQ Enable
HDRQ
0
0
1
1
Figure B-10. Host Base Address and Host Port Control Registers
HRP
Host Request Open Drain
0
1
0
1
Host Request Priority
Host Port Control Register (HPCR)
Reset = $00
15
HREQ Active Low
HREQ Active High
HTRQ,HRRQ Active Low
HTRQ,HRRQ Active High
HAP
HROD
0
1
0
1
14
HRP
13
HCSP
HREN/HEW
1
1
1
1
12
HDDS
Host Base Address Register (HBAR) X:$FFFFC5 Read/Write
Reset = $80
15
DSP56303 User’s Manual, Rev. 2
*
0
HMUX
11
*
0
8
HASP
10
BA10
7
HDSP
9
6
BA9
HROD
8
BA8
5
X:$FFFFC4 Read/Write
*
0
7
Host GPIO Port Enable
0 = GPIO Pins Disable, 1 = GPIO Pin Enable
Host Address Line 8 Enable
0 → HA8 = GPIO, 1 → HA8 = HA8
Host Address Line 9 Enable
0 → HA9 = GPIO, 1 → HA9 = HA9
Host Chip Select Enable
0 → HCS/HAI0 = GPIO,
1 → HCS/HA10 = HC8, if HMUX = 0
1 → HCS/HA10 = HC10, if HMUX = 1
Host Request Enable
0 → HREQ/HACK = GPIO,
1 → HREQ = HREQ, if HDRQ = 0
Host Acknowledge Enable
0 → HACK = GPIO
If HDRQ & HREN = 1,
HACK = HACK
Host Enable
0 → HI08 Disable
1 → HI08 Enable
BA7
4
Pins = GPIO
HEN
6
BA6
3
HAEN
5
*
= Reserved, Program as 0
BA5
Date:
Programmer:
2
HREN HCSEN HA9EN HA8EN HGEN
4
BA4
1
3
BA3
0
2
Programming Sheets
Sheet 2 of 5
1
0
B-19