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SC1100 Folha de dados(PDF) 41 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Nome de Peças SC1100
Descrição Electrónicos  Geode??Information Appliance On a Chip
PDF  348 Pages
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Fabricante Electrônico  NSC [National Semiconductor (TI)]
Página de início  http://www.national.com
Logo NSC - National Semiconductor (TI)

SC1100 Folha de dados(HTML) 41 Page - National Semiconductor (TI)

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Revision 1.1
41
www.national.com
Signal Definitions (Continued)
2.4.5
Sub-ISA Interface Signals
Signal Name
Ball No.
Type
Description
Mux
A[23:0]
See Table
2-3 on
page 27
O
Address Lines
AD[23:0]
D15
M25
I/O
Data Bus
STOP#
D14
P26
IRDY#
D13
N25
TRDY#
D12
H24
PAR
D11
V26
C/BE3#
D10
R26
C/BE2#
D9
G24
C/BE1#
D8
E24
C/BE0#
D[7:0]
Y25, R24,
Y26, W25,
P24, N24,
W26, V25
I/O
AD[31:24]
BHE#
N26
O
Byte High Enable. With A0, defines byte accessed for
16 bit wide bus cycles.
DEVSEL#
IOCS1#
D22
O
I/O Chip Selects
GPIO14+IOR#+
DOCR#
IOCS0#
B23
O
GPIO17+
IOCHRDY
ROMCS#
C23
O
ROM or Flash ROM Chip Select
BOOT16 (Strap)
DOCCS#
D21
O
DiskOnChip or NAND Flash Chip Select
GPIO20
F5BAR4CS#
B21
O
ROM or Flash ROM Chip Selects
GPIO2
F5BAR5CS#
A22
O
GPIO3
TRDE#
B22
O
Transceiver Data Enable Control. Active low for Sub-
ISA data transfers. The signal timing is as follows:
• In a read cycle, TRDE# has the same timing as
RD#.
• In a write cycle, TRDE# is asserted (to active low) at
the time WR# is asserted. It continues being
asserted for one PCI clock cycle after WR# has
been negated, then it is negated.
GPIO0
RD#
D23
O
Memory or I/O Read. Active on any read cycle.
CLKSEL0 (Strap)
WR#
C21
O
Memory or I/O Write. Active on any write cycle.
---
IOR#
D22
O
I/O Read. Active on any I/O read cycle.
GPIO14+IOCS1#
+DOCR#
IOW#
C22
O
I/O Write. Active on any I/O write cycle.
DOCW#+GPIO15
DOCR#
D22
O
DiskOnChip or NAND Flash Read. Active on any
memory read cycle to DiskOnChip.
GPIO14+IOCS1#
+IOR#
DOCW#
C22
O
DiskOnChip or NAND Flash Write. Active on any
memory write cycle to DiskOnChip.
IOW#+GPIO15
IOCHRDY
B23
I
I/O Channel Ready
GPIO17+IOCS0#



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