lpc47s457-ns Standard Microsystems Corp., lpc47s457-ns Datasheet - Page 145
lpc47s457-ns
Manufacturer Part Number
lpc47s457-ns
Description
Advanced I/o With X-bus Interface
Manufacturer
Standard Microsystems Corp.
Datasheet
1.LPC47S457-NS.pdf
(259 pages)
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Part Number:
LPC47S457-NS
Manufacturer:
Microchip Technology
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The following figure shows the X-bus Interface (Shaded areas operate differently in Mode 1 and Mode 2).
SMSC LPC47S45x
Address Configuration
Address Configuration
Address Configuration
Address Configuration
Address Configuration
Address Configuration
Address Configuration
Address Configuration
nXWR
nXWR
nXRD
nXRD
FIGURE 11 − LPC AND SMBUS I/O ACCESSES TO THE X-BUS INTERFACE (MODE 1/MODE 2)
X-Bus CS0 Base
X-Bus CS0 Base
X-Bus CS1 Base
X-Bus CS1 Base
X-Bus CS2 Base
X-Bus CS2 Base
X-Bus CS3 Base
X-Bus CS3 Base
Register
Register
Register Disable
Register Disable
Register Disable
Register Disable
Register Disable
Register Disable
Command
Command
SMBus2
SMBus2
Code
Code
8
8
4
4
a
a
12
12
- Arbitration Logic for LPC and SMBus2 access for X-Bus
- Arbitration Logic for LPC and SMBus2 access for X-Bus
Address
Address
LPC
LPC
DATASHEET
4
4
Command Code
Command Code
Command Code
Command Code
Command Code
Command Code
Command Code
Command Code
Command Code
Command Code
Address Comparator
Address Comparator
Comparator
Comparator
Comparator
Comparator
Comparator
Comparator
Comparator
Comparator
Comparator
Comparator
10-bit (Mode 1) /
10-bit (Mode 1) /
10/8-bit Address
10/8-bit Address
4-bit (LCD)
4-bit (LCD)
12-bit Address
12-bit Address
10-bit Address
10-bit Address
Page 145 of 259
8-bit(Mode 2)
8-bit(Mode 2)
Comparator
Comparator
Comparator
Comparator
Comparator
Comparator
(0010)
(0010)
(0011)
(0011)
(0001)
(0001)
(0100)
(0100)
(0101)
(0101)
4-bit
4-bit
4-bit
4-bit
4-bit
4-bit
4-bit
4-bit
LPC/SMBus2
LPC/SMBus2
a
a
Mux
Mux
SMBus2 Data
SMBus2 Data
LPC Data/
LPC Data/
Active
Read-
Read-
nXRD
nXRD
Active
I/O
I/O
R/W Command
R/W Command
LPC/SMBus2
LPC/SMBus2
SMBus2
SMBus2
SMBus2
SMBus2
SMBus2
SMBus2
SMBus2
SMBus2
a
a
a
a
a
a
a
a
nXWR
nXWR
Write-
Write-
Active
Active
LPC/
LPC/
LPC/
LPC/
LPC/
LPC/
LPC/
LPC/
Mux
Mux
Mux
Mux
Mux
Mux
Mux
Mux
I/O
I/O
Data
Data
8-bit
8-bit
Bus
Bus
nXCS0
nXCS0
nXCS2
nXCS2
nXCS3
nXCS3
LCDS
XCS1
XCS1
LCDS
XAA0
XAA0
XAA1
XAA1
XAA2
XAA2
XAA3
XAA3
Rev. 08-10-09
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