Freescale Semiconductor DSP56366 - Manual (Page 331)

Programming Sheets
DSP56366 24-Bit Digital Signal Processor User Manual, Rev. 4
Freescale Semiconductor D-23
Figure D-8. Host Base Address and Host Port Control
Application: Date:
Programmer:
Sheet 3 of 6
HOST (HDI08)
7 6 5 4 3 2 1 0 15
BA5 BA3 BA7 BA4 BA6 *
0
Host Base Address Register (HBAR)
X:$FFFFC5
Reset = $80
8
BA8 BA9 BA10 *
0
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
HAEN HREN HCSEN HA9EN HA8EN HGEN
* = Reserved, Program as 0
HEN *
0
HAP HRP HCSP HDDS HROD HMUX HDSP HASP Host Port Control
X:$FFFFC4
Reset = $0
Host Acknowledge Enable
0 Æ HACK = GPIO
Host Request Enable
0 Æ HOREQ/HACK = GPIO,
1 Æ HOREQ = HOREQ,
Host Chip Select Enable
0 Æ HCS/HAI0 = GPIO,
1 Æ HCS/HA10 = HCS, if HMUX = 0
1 Æ HCS/HA10 = HC10, if HMUX = 1
Host Address Line 9 Enable
0 Æ HA9 = GPIO, 1 Æ HA9 = HA9
Host Address Line 8 Enable
0 Æ HA8 = GPIO, 1 Æ HA8 = HA8
Host GPIO Port Enable
0 = GPIO Pins Disconnected
Host Acknowledge Polarity
0 = HACK Active Low, 1 = HACK Active High
Host Chip Select Polarity
0 = HCS Active Low
Host Dual Data Strobe
0 = Single Strobe, 1 = Dual Strobe
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 Æ HDI08 Disable
1 Æ HDI08 Enable
Pins = GPIO
Register (HPCR)
Read/Write
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 Polarity
HDRQ HRP
0
0
1
1 0
1
0
1 HOREQ Active Low
HOREQ Active High
HTRQ,HRRQ Active Low
HTRQ,HRRQ Active High
DSP Side
1 = GPIO Pin Enable
if HDRQ = 0