Motorola DSP56367 User Manual page 455

Application:
HOST (HDI08)
Host Base Address Register (HBAR)
Host Request Open Drain
HDRQ HROD
0 0
0 1
1 0
1 1
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 = Single Strobe, 1 = Dual Strobe
Host Chip Select Polarity
0 = HCS Active Low
HTRQ & HRRQ Enable
1 = HCS Active High
Host Request Polarity
HDRQ HRP
0 0 HOREQ Active Low
0 1 HOREQ Active High
1 0 HTRQ,HRRQ Active Low
1 1 HTRQ,HRRQ Active High
Host Acknowledge Polarity
0 = HACK Active Low, 1 = HACK Active High
15 14
HAP
Host Port Control
Register (HPCR)
X:$FFFFC4
Read/Write
Reset = $0
*
= Reserved, Program as 0
Figure D-8 Host Base Address and Host Port Control
MOTOROLA
15
*
0
X:$FFFFC5
Reset = $80
HREN/HEW
1
1
1
1
13 12 11 10
HRP HCSP HDDS HMUX HASP
DSP56367
Programmer's Reference
Date:
Programmer:
DSP Side
8 7 6 5
*
BA10 BA9 BA8
0
Host GPIO Port Enable
0 = GPIO Pins Disconnected
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 = HCS, if HMUX = 0
1 → HCS/HA10 = HC10, if HMUX = 1
Host Request Enable
0 → HOREQ/HACK = GPIO,
1 → HOREQ = HOREQ,
if HDRQ = 0
Host Acknowledge Enable
0 → HACK = GPIO
If HDRQ & HREN = 1,
HACK = HACK
Host Enable
0 → HDI08 Disable
Pins = GPIO
1 → HDI08 Enable
9 8 7 6 5
*
HDSP HROD HEN HAEN
0
Sheet 3 of 6
4 3 2 1 0
BA7 BA6 BA5 BA4 BA3
4 3 2 1
HREN HCSEN HA9EN HA8EN HGEN
D-23
0