Motorola DSP56309 User Manual page 68

Signal
Name
HCS
HA10
PB13 Input or
Output
MOTOROLA
Table 2-11 Host Interface (Continued)
State
Type During
Reset
Input Input
Input
DSP56309UM/D
Signal/Connection Descriptions
Signal Description
Host Chip SelectÑWhen HI08 is
programmed to interface a non-multiplexed
host bus and the HI function is selected, this
signal is the host chip select (HCS) input. The
polarity of the chip select is programmable,
but is configured active-low (HCS) after
reset.
Host Address 10ÑWhen HI08 is
programmed to interface a multiplexed host
bus and the HI function is selected, this
signal is line 10 of the host address (HA10)
input bus.
Port B 13ÑWhen the HI08 is configured as
GPIO through the HPCR, this signal is
individually programmed as an input or
output through the HDDR.
Host Interface (HI08)
2-21