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2-12
DSP56367
MOTOROLA
Signal/Connection Descriptions
Parallel Host Interface (HDI08)
HCS
Input
GPIO
disconnected
Host Chip Select—When HDI08 is programmed to interface 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 HDI08 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.
PB13
Input, output, or
disconnected
Port B 13—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 3.3V tolerant.
HOREQ/HOREQ
Output
GPIO
disconnected
Host Request—When HDI08 is programmed to interface a single host
request host bus and the HI function is selected, this signal is the host
request (HOREQ) output. The polarity of the host request is
programmable, but is configured as active-low (HOREQ) following reset.
The host request may be programmed as a driven or open-drain output.
HTRQ/
HTRQ
Output
Transmit Host Request—When HDI08 is programmed to interface a
double host request host bus and the HI function is selected, this signal is
the transmit host request (HTRQ) output. The polarity of the host request is
programmable, but is configured as active-low (HTRQ) following reset.
The host request may be programmed as a driven or open-drain output.
PB14
Input, output, or
disconnected
Port B 14—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 3.3V tolerant.
HACK/
HACK
Input
GPIO
disconnected
Host Acknowledge—When HDI08 is programmed to interface a single
host request host bus and the HI function is selected, this signal is the host
acknowledge (HACK) Schmitt-trigger input. The polarity of the host
acknowledge is programmable, but is configured as active-low (HACK)
after reset.
HRRQ/
HRRQ
Output
Receive Host Request—When HDI08 is programmed to interface a
double host request host bus and the HI function is selected, this signal is
the receive host request (HRRQ) output. The polarity of the host request is
programmable, but is configured as active-low (HRRQ) after reset. The
host request may be programmed as a driven or open-drain output.
PB15
Input, output, or
disconnected
Port B 15—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 3.3V tolerant.
Table 2-9 Host Interface (Continued)
Signal Name
Type
State during
Reset
Signal Description
Содержание DSP56367
Страница 16: ...xvi MOTOROLA CONTENTS Paragraph Number Title Page Number ...
Страница 22: ...xxii MOTOROLA List of Figures Figure Number Title Page Number ...
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Страница 148: ...4 6 DSP56367 MOTOROLA Design Considerations PLL Performance Issues ...
Страница 248: ...9 30 DSP56367 MOTOROLA Serial Host Interface SHI Programming Considerations ...
Страница 306: ...10 58 DSP56367 MOTOROLA Enhanced Serial Audio Interface ESAI ESAI Initialization Examples ...
Страница 389: ...Bootstrap ROM Contents MOTOROLA DSP56367 A 15 end ...
Страница 390: ...A 16 DSP56367 MOTOROLA Bootstrap ROM Contents ...
Страница 432: ...C 8 DSP56367 MOTOROLA JTAG BSDL ...
Страница 484: ...D 52 DSP56367 MOTOROLA Programmer s Reference ...
Страница 490: ...E 6 DSP56367 MOTOROLA Power Consumption Benchmark ...
Страница 516: ...F 26 DSP56367 MOTOROLA IBIS Model ...
Страница 522: ...Index 6 MOTOROLA Index ...
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