SAA7240 データシートの表示（PDF） - Philips Electronics
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SAA7240 Datasheet PDF : 32 Pages
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5.2 Pin description
Table 1 Interface signal descriptions
SYMBOL
PIN TYPE
DESCRIPTION
BUFFER TYPE
RESET
STATE
Programmable input/output port
PIO[0:7]/INT[0:7]
105 to 112
PIO8
113
PIO9
114
PIO10/BPN
116
PIO11/VPP
117
PIO12/C8
118
PIO13/C4
119
PIO14/BRN
120
PIO15/BGN
121
PIO[16:31]/D[16:31]
20 to 11,
9 to 4, 2
Extension bus interface
D[0:15]
41 to 28,
25 to 21
A[0:21]
A[22:25](1)
63 to 90
RAS0N
49
RAS1N/DCS1N
48
LCASN/LBA#/SIZE0 46
I/O I/O lines or interrupt inputs
I/O I/O line
I/O I/O line
I/O I/O line or bus pre-empt; this requires the bus owner to
release the bus after the current transfer
I/O I/O line or VPP; control signal for the supply voltage
(ICAM)
I/O I/O line or IO data for conditional access (ICAM)
I/O I/O line or IO data for conditional access (ICAM)
I/O I/O line or bus request input
I/O I/O line or bus grant output
I/O I/O lines or upper data bus in 32-bit configuration
I/O lower 16-bit data bus
O address bus
n.a. address bus extension shared with the IEEE 1284
interface
O row access strobe for DRAM and SDRAM bank 0
O row access strobe for DRAM and SDRAM bank 1 or
SDRAM chip select bank 1
O column access strobe lower byte
bidirectional; CMOS input; 2 mA Z
output drive
bidirectional; CMOS input; 2 mA Z
output drive
bidirectional; CMOS input; 2 mA Z
output drive
bidirectional; CMOS input; 2 mA Z
output drive
bidirectional; CMOS input; 2 mA Z
output drive
bidirectional; CMOS input;
Z
8 mA output drive; open-drain;
bidirectional; 8 mA output drive; Z
open-drain
bidirectional; CMOS input; 2 mA Z
output drive
bidirectional; CMOS input; 2 mA Z
output drive
bidirectional; CMOS input;
Z
3-state output; 2 mA output drive
bidirectional; CMOS input;
Z
3-state output; 2 mA output drive
3-state output; 2 mA output drive LOW
n.a.
n.a.
3-state output; 2 mA output drive HIGH
3-state output; 2 mA output drive HIGH
3-state output; 2 mA output drive HIGH
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