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參數(shù)資料
| 型號(hào)： | NS32FX100VF |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | System Controller |
| 中文描述： | 系統(tǒng)控制器 |
| 文件頁數(shù)： | 62/94頁 |
| 文件大?。?/td> | 955K |
| 代理商： | NS32FX100VF |
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4.0 Device Specifications
4.1 NS32FX100 PIN DESCRIPTIONS
The following is a brief description of all NS32FX100 pins.
Some NS32FX100 pins have flexible allocation. These pins
can be individually configured as general purpose pins even
when the module they belong to is enabled. The Ports mod-
ule controls pin allocation.
Unless otherwise specified, all digital inputs and outputs are
synchronous with the CTTL pin.
The following is a brief description of all NS32FX100 pins.
4.1.1 Supplies
Signal
Pin Numbers
Description
GNDA1-2
77
82
Analog ground.
GNDD1-9
11
51
102
25
75
116
38
90
131
Digital ground.
VCCA1-2
76
83
Analog PowerD
5V supply for analog circuits.
VCCD1-9
5
50
96
17
66
109
32
84
125
Digital PowerD
5V supply for digital circuits.
4.1.2 Input Signals
Signal
Pin Numbers
Description
CTTL
33
CPU ClockD
CPU clock that is used for clocking the NS32FX100.
DMRQ3
58
DMA RequestD
Input for DMA channel 3 request or general purpose input pin.
FOSCI
36
High-Speed OscillatorD
(31.9488 MHz–49.1520 MHz) Asynchronous. When an external
oscillator is used, FOSCO should be left unconnected or loaded with no more than 5 pF of stray
capacitance.
HBE
117
High Byte EnableD
Status signal used to enable data transfers on the most significant byte of
the data bus.
HLDA
114
Hold AcknowledgeD
Issued by the CPU to indicate it has released the bus in response to a
HOLD request.
INT0–3
40
43
41
42
Interrupt InD
Asynchronous. External maskable prioritized interrupt requests.
MWSI
57
MICROWIRE Serial InD
Serial data for communication via the MICROWIRE protocol or general
purpose input pin.
PFAIL
64
Power Fail IndicationD
An asynchronous signal which forces the NS32FX100 into freeze
mode.
PTMP
81
Temperature SenseD
An analog voltage proportional to the printer temperature.
RST
61
Reset InD
Asynchronous reset input from the CPU.
SBG
80
Scanner BackgroundD
Analog current from the Automatic Background Control circuit (ABC).
SDIN
19
Sigma-Delta Data InD
Asynchronous input from the SDC analog receiver.
SOSCI
62
Low-Speed OscillatorD
(32.768 kHz or 455 kHz) Asynchronous. When an external oscillator is
used, SOSCO should be left unconnected or loaded with no more than 5 pF of stray
capacitance.
SVI
78
Scanner Video InD
Analog current from the scanner sample and hold circuit.
URXD
56
UART ReceiveD
Asynchronous input or general purpose input pin.
UTEN
55
UART Transmit EnableD
Input, Asynchronous or general purpose input pin.
62
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