ACS8520 View Datasheet(PDF) - Semtech Corporation
Part Name
Description
MFG CO.
'ACS8520' PDF : 150 Pages View PDF
ACS8520 SETS
ADVANCED COMMUNICATIONS
Address (hex): 7F
Register Name cnfg_uPsel
FINAL
DATASHEET
Description
(R/W)* Register reflecting the
value on the UPSEL device pins
following reset, and writeable in
EPROM mode.
Default Value
0000 0000**
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
upsel_value
Bit 0
Bit No.
Description
Bit Value Value Description
[7:3]
[2:0]
Not used.
-
-
upsel_value
This register defaults to reflecting the value present
on the UPSEL pins of the device at reset. At reset
this is used to set the mode of the microprocessor
interface. Following power-up, these pins have no
further effect on the microprocessor interface.
*In order that the device can be “booted” from an
EPROM and subsequently communicate with a
processor, this register is programmable in EPROM
mode. The value programmed in location 7F of the
EPROM will be the value loaded into this register.
000
001
010
011
100
101
110
111
(value at reset)
Not used.
Interface in EPROM boot mode.
Interface in Multiplexed mode.
Interface in Intel mode.
Interface in Motorola mode.
Interface in Serial mode.
Not used.
Not used.
**The default of this register is entirely dependent
on the value of the pins at reset.
Revision 3.02/October 2005 © Semtech Corp.
Page 132
www.semtech.com
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