Motorola DSP56305 User Manual page 79

Signal Name Type
HIRDY Input/
Output
HDBDR Output
PB21 Input or
Output
HDEVSEL Input/
Output
HSAK Output
PB22 Input or
Output
MOTOROLA
Table 2-10 Host Interface (Continued)
State
During
Reset
Tri-stated Host Initiator Ready—When the HI32 is
programmed to interface a PCI bus and the HI
function is selected, this is the Host Initiator Ready
signal.
Host Data Bus Direction—When HI32 is
programmed to interface a universal non-PCI bus
and the HI function is selected, this signal is Host
Data Bus Direction output.
Port B 21—When the HI32 is configured as GPIO
through the DCTR, this signal is individually
programmed as an input or output through the
HI32 DIRH.
This input is 5 V tolerant.
Tri-stated Host Device Select—When the HI32 is
programmed to interface a PCI bus and the HI
function is selected, this is the Host Device Select
signal.
Host Select Acknowledge—When HI32 is
programmed to interface a universal non-PCI bus
and the HI function is selected, this signal is Host
Select Acknowledge output.
Port B 22—When the HI32 is configured as GPIO
through the DCTR, this signal is individually
programmed as an input or output through the
HI32 DIRH.
This input is 5 V tolerant.
DSP56305 User's Manual
Signal/Connection Descriptions
Host Interface (HI32)
Signal Description
2-21