DSP56309 Overview
Manual Conventions
MOTOROLA
DSP56309UM/D 1-5
1.3
MANUAL CONVENTIONS
This manual uses the following conventions:
¥ Bits within registers are always listed from most significant bit (MSB) to least
significant bit (LSB).
¥ Bits within a register are indicated AA[n:m], n>m, when more than one bit is
involved in a description. For purposes of description, the bits are presented as if
they are contiguous within a register. However, this is not always the case. Refer
to the programming model diagrams or to the programmerÕs sheets to see the
exact location of bits within a register.
¥ When a bit is described as Òset,Ó its value is 1. When a bit is described as
Òcleared,Ó its value is 0.
¥ The word ÒassertÓ means that a high true (active high) signal is pulled high to
V
CC
or that a low true (active low) signal is pulled low to ground. The word
ÒdeassertÓ means that a high true signal is pulled low to ground or that a low true
signal is pulled high to V
CC
. See
¥ Pins or signals that are asserted low (made active when pulled to ground)
Ð In text, have an overbar. For example, RESET is asserted low.
Ð In code examples, have a tilde in front of their names. In
refers to the SS0 signal (shown as
~SS0
).
Table 1-1
High True/Low True Signal Conventions
Signal/Symbol
Logic State
Signal State
Voltage
PIN
1
True
Asserted
Ground
2
PIN
False
Deasserted
V
CC
3
PIN
True
Asserted
V
CC
PIN
False
Deasserted
Ground
1.
PIN is a generic term for any pin on the chip.
2.
Ground is an acceptable low voltage level. See the
appropriate data sheet for the range of acceptable low
voltage levels (typically a TTL logic low).
3.
V
CC
is an acceptable high voltage level. See the
appropriate data sheet for the range of acceptable high
voltage levels (typically a TTL logic high).
Содержание DSP56309
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Страница 47: ...1 18 DSP56309UM D MOTOROLA DSP56309 Overview DSP56309 Architecture Overview ...
Страница 48: ...MOTOROLA DSP56309UM D 2 1 SECTION 2 SIGNAL CONNECTION DESCRIPTIONS ...
Страница 85: ...2 38 DSP56309UM D MOTOROLA Signal Connection Descriptions OnCE JTAG Interface ...
Страница 86: ...MOTOROLA DSP56309UM D 3 1 SECTION 3 MEMORY CONFIGURATION ...
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Страница 125: ...5 2 DSP56309UM D MOTOROLA General Purpose I O 5 1 INTRODUCTION 5 3 5 2 PROGRAMMING MODEL 5 3 ...
Страница 128: ...MOTOROLA DSP56309UM D 6 1 SECTION 6 HOST INTERFACE HI08 ...
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Страница 241: ...8 30 DSP56309UM D MOTOROLA Serial Communication Interface SCI GPIO Signals and Registers ...
Страница 242: ...MOTOROLA DSP56309UM D 9 1 SECTION 9 TRIPLE TIMER MODULE ...
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Страница 302: ...MOTOROLA DSP56309UM D 11 1 SECTION 11 JTAG PORT ...
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Страница 370: ...MOTOROLA DSP56309UM D D 1 APPENDIX D PROGRAMMING REFERENCE ...
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