dsp56362 Freescale Semiconductor, Inc, dsp56362 Datasheet - Page 16

• Manufacturer Part Number: dsp56362
• Description: Dsp56362 24-bit Audio Digital Signal Processor
• Manufacturer: Freescale Semiconductor, Inc

Host Interface (HDI08)
2-10
Signal Name
HAD0–HAD7
PB0–PB7
HAS/HAS
H0–H7
HA0
PB8
HA1
HA8
PB9
Input, Output, or
Input, Output, or
Input, output, or
Disconnected
Disconnected
disconnected
Input/Output
Input/Output
Type
Input
Input
Input
Input
State during Reset
GPIO Disconnected Host Data—When the HDI08 is programmed to interface a
GPIO Disconnected Host Address Input 0—When the HDI08 is programmed to
GPIO Disconnected Host Address Input 1—When the HDI08 is programmed to
DSP56362 Technical Data, Rev. 4
Table 2-9 Host Interface
nonmultiplexed host bus and the HI function is selected, these
signals are lines 0–7 of the bidirectional, tri-state data bus.
Host Address—When HDI08 is programmed to interface a
multiplexed host bus and the HI function is selected, these
signals are lines 0–7 of the address/data bidirectional,
multiplexed, tri-state bus.
Port B 0–7—When the HDI08 is configured as GPIO, these
signals are individually programmable as input, output, or
internally disconnected.
The default state after reset for these signals is GPIO
disconnected.
This input is 5 V tolerant.
interface a nonmultiplexed host bus and the HI function is
selected, this signal is line 0 of the host address input bus.
Host Address Strobe—When HDI08 is programmed to
interface 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.
Port B 8—When the HDI08 is configured as GPIO, this signal is
individually programmed as input, output, or internally
disconnected.
The default state after reset for this signal is GPIO disconnected.
This input is 5 V tolerant.
interface a nonmultiplexed host bus and the HI function is
selected, this signal is line 1 of the host address (HA1) input bus.
Host Address 8—When HDI08 is programmed to interface a
multiplexed host bus and the HI function is selected, this signal
is line 8 of the host address (HA8) input bus.
Port B 9—When the HDI08 is configured as GPIO, this signal is
individually programmed as input, output, or internally
disconnected.
The default state after reset for this signal is GPIO disconnected.
This input is 5 V tolerant.
Signal Description
Freescale Semiconductor