参数资料
型号: PC87393F-VJG
厂商: NATIONAL SEMICONDUCTOR CORP
元件分类: 外设及接口
英文描述: 100-Pin LPC SuperI/O Devices for Portable Applications
中文描述: MULTIFUNCTION PERIPHERAL, PQFP100
封装: TQFP-100
文件页数: 66/148页
文件大小: 1733K
代理商: PC87393F-VJG
1.0 Signal/Pin Connection and Description (Continued)
24
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1.6
INTERNAL PULL-UP AND PULL-DOWN RESISTORS
The signals listed in Table 4 can optionally support internal pull-up (PU) and/or pull-down (PD) resistors. See Section 9.3 for
the values of each resistor type.
Table 4. Internal Pull-Up and Pull-Down Resistors
XIOWR
82, 73
O
O3/6
VDD
I/O Write. Active (low) level indicates I/O write cycle on the X-Bus
Extension. This signal is for devices that require separate
read/write inputs for memory and I/O.
XD7-0
96, 97,
98, 99,
100, 1,
2, 3
I/O
INTS/O3/6
VDD
Data Bus
XA19-0
74-95
O
O3/6
VDD
Address Bus
XCS1-0
73, 72
O
O3/6
VDD
Chip Select. These signals control the selection of up to two
chips residing on the X-Bus Extension.
XSTB2-0
87, 90,
91
OO3/6
VDD
Assert Strobe. These signals control the selection of up to three
external latch devices for X-Bus Latched Address Mode
transactions.
XRDY
72, 35
I
INTS
VDD
I/O Ready. This signal indicates to the PC87393 to extend the
access cycles.
PIRQA-D
87-84
I
INTS
VDD
Parallel Interrupt. Convert parallel interrupts into serial interrupts
by means of the Interrupt Serializer (The interrupt number
associated with each signal is a part of the system conguration.)
Signal
Pin/s
Type
Comments
Game Port (GMP) (PC87393 and PC87393F)
JOYABTN0
PU25
Programmable
JOYABTN1
PU25
Programmable
JOYBBTN0
PU25
Programmable
JOYBBTN1
PU25
Programmable
General-Purpose Input/Output (GPIO) Ports
(PC87392, PC87393 and PC87393F)
GPIO00-07
PU25
Programmable
GPIO10-17
PU25
Programmable
GPIO20-27
PU25
Programmable
GPIO30-37
PU25
Programmable
Musical Instrument Digital Interface (MIDI) Port
(PC87393 and PC87393F)
MDRX
PU25
Programmable
Strap Conguration
BADDR
PD40
Strap
TEST
PD15
Strap
Signal
Pin/s
I/O Buffer Type Power Well
Description
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