320724-01 データシートの表示（PDF） - National Instruments Corporation
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320724-01 Datasheet PDF : 16 Pages
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TNT4882
Single-Chip IEEE 488.2 Talker/Listener ASIC
Table continued from page 3
Pin No.(s)
Name(s)
Type
51
DCAS
O
52
NC
O
53
MODE
I
55
CSN
I
62
BBUSN
I
63
RDN
I
64
WRN
I
66
LADCS
O
67
RESETN
I
71,74,77,80,88,
DIO8-1N
I/O
89,91,92
70,73,76,79,
RENN, ATNN, SRQN,
I/O
81,82,84,85
IFCN, NDACN, NRFDN,
DAVN, EOIN
95
XTAL0
O
96
XTAL1
I
98
KEYCLKN
O
99
KEYDQ
I/O
100
KEYRSTN
O
4,8,13,25,27,35,37 GND
_
41,45,48,54,56,57,
59,61,65,68,72,75,
78,83,86,90,93,97
12,24,36,40,58,
VDD
_
60,69,87,94
Description
Asserts when the device clear state machine is in DCAS
Leave this pin unconnected
Determines whether the TNT4882 powers up in 7210 or 9914 emulation mode –
High = 7210 mode, Low = 9914 mode
Chip Select enables I/O transfers between the CPU and the TNT4882
Enables register accesses through the B bus (DATA7-0)
Enables the contents of the registers selected by ADDR 4:0 and CSN or the FIFOs to
appear on the data bus selected by ABUSN and BBUSN
Latches data on the bus selected by ABUSN and BBUSN into an internal TNT4882 register
on the trailing (rising) edge of WRN
Asserts when the TNT4882 is addressed as a Listener
Holds the TNT4882 in its idle state
8-bit bidirectional IEEE 488 data bus
IEEE 488 control signals
Output of crystal circuit – use only for driving a quartz crystal
Crystal oscillator input – drive with a 40 MHz CMOS input level clock signal
Strobes data to or from a DS1204 electronic key
Transmits serial data between the TNT4882 and a DS1204 key
Resets a DS1204 key
Ground pins – 0 V
Power pins – +5 V (±5%)
ISA Pin Configuration
NDACN
NRFDN
GND
DAVN
EOIN
GND
VDD
DIO4N
DIO3N
GND
DIO2N
DIO1N
GND
VDD
XTAL0
XTAL1
GND
KEYCLKN
KEYDQ
KEYRSTN
80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51
81
50
82
49
83
48
84
47
85
46
86
45
87
44
88
43
89
42
90
TNT4882
41
91
ISA Pin Configuration
40
92
39
93
38
94
37
95
36
96
35
97
34
98
33
99
32
100
31
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
DATA7
DATA6
GND
DATA5
DATA4
GND
DATA3
DATA2
DATA1
GND
VDD
DATA0
IOCHRDY
AEN_N
VDD
GND
INTR
DACKN
DRQ
ADDR9
Figure 4. TNT4882 ISA Pin Configuration
4 National Instruments
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