DSP56309/D View Datasheet(PDF) - Motorola => Freescale
Part Name
Description
Manufacturer
DSP56309/D Datasheet PDF : 112 Pages
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Host Interface (HI08)
Freescale Semiconductor, Inc.
Table 1-11. Host Interface (Continued)
Signal Name
HA0
Type
Input
State During
Reset1,2
Signal Description
Ignored Input Host Address Input 0—When the HI08 is programmed to
interface with a nonmultiplexed host bus and the HI function is
selected, this signal is line 0 of the host address input bus.
HAS/HAS
Input
Host Address Strobe—When the HI08 is programmed to
interface with a multiplexed host bus and the HI function is
selected, this signal is the host address strobe (HAS)
Schmitt-trigger input. The polarity of the address strobe is
programmable but is configured active-low (HAS) following reset.
PB8
Input or Output
Port B 8—When the HI08 is configured as GPIO through the HI08
Port Control Register, this signal is individually programmed as an
input or output through the HI08 Data Direction Register.
HA1
Input
Ignored Input Host Address Input 1—When the HI08 is programmed to
interface with a nonmultiplexed host bus and the HI function is
selected, this signal is line 1 of the host address (HA1) input bus.
HA8
Input
Host Address 8—When the HI08 is programmed to interface with
a multiplexed host bus and the HI function is selected, this signal
is line 8 of the host address (HA8) input bus.
PB9
Input or Output
Port B 9—When the HI08 is configured as GPIO through the HI08
Port Control Register, this signal is individually programmed as an
input or output through the HI08 Data Direction Register.
HA2
Input
Ignored Input Host Address Input 2—When the HI08 is programmed to
interface with a nonmultiplexed host bus and the HI function is
selected, this signal is line 2 of the host address (HA2) input bus.
HA9
Input
Host Address 9—When the HI08 is programmed to interface with
a multiplexed host bus and the HI function is selected, this signal
is line 9 of the host address (HA9) input bus.
PB10
HCS/HCS
Input or Output
Port B 10—When the HI08 is configured as GPIO through the
HI08 Port Control Register, this signal is individually programmed
as an input or output through the HI08 Data Direction Register.
Input
Ignored Input
Host Chip Select—When the HI08 is programmed to interface
with a nonmultiplexed 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.
HA10
Input
Host Address 10—When the HI08 is programmed to interface
with a multiplexed host bus and the HI function is selected, this
signal is line 10 of the host address (HA10) input bus.
PB13
Input or Output
Port B 13—When the HI08 is configured as GPIO through the
HI08 Port Control Register, this signal is individually programmed
as an input or output through the HI08 Data Direction Register.
1-10
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