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SCES795C
– SEPTEMBER 2010 – REVISED FEBRUARY 2011
Table 10. Device Control Register (0Eh)(1)
Clock Control Register
Bits(s)
Type (R/W)
Description
‘0’ OE is not used to control the data
direction on the selected SIM I/O and the
OE Control
0
R/W
base band I/O
‘1’ OE controls the data direction, see below
‘0’ OE input = ‘0’ data direction Base band
-
> SIM
OE input =
‘1’ data direction SIM -> base
band
OE Direction Control
1
R/W
‘1’ OE input = ‘0’ data direction SIM -> base
band
OE input =
‘1’ data direction Base band ->
SIM
‘0’ Battery removal interrupt disabled
‘1’ Battery removal detected causes interrupt
Battery Removal Interrupt
2
R/W
on IRQ (interrupt sets b3 in the status
register)
BSI detection level
BSI Level Detection
3
R/W
‘0’ 1.2V
‘1’ 1.65V
BSI detection behavior
‘0’ Battery not present causes automatic
BSI Detection Control
4
R/W
power down of both SIM interfaces
‘1’ Battery not present doesn’t cause
automatic power down
‘0’ SDN detection interrupt disabled
SDN Detection Interrupt
5
R/W
‘1’ SDN detected causes interrupt on IRQ
(interrupt sets b1 in the status register)
SDN input active level
‘0’ SDN is active low
i.e. automatic shutdown occurs when
SDN Detection Level
6
R/W
debounced SDN is low.
‘1’ SDN is active high
i.e. automatic shutdown occurs when
debounced SDN is high
Disable automatic power down upon SDN
detection
‘0’ SDN detection causes automatic power
SDN Detection Control
7
R/W
down of SIM2 interface
‘1’ SDN detection doesn’t cause automatic
power down of SIM2 interface
(1)
Reset value: 00h
Table 11. General Purpose Register (15h)(1)
Function
Bit(s)
Type (R/W)
Description
'0' SDN input pull-up enabled
SDN pull-up control
0
R/W
'1' SDN input pull-up disabled
'0' SDN pull-down disabled
SDN pull-down control
1
R/W
'1' SDN pull-down enabled
RFU
7:2
R/W
(1)
The RFU bits shall allow for the write operation to complete but shall read as
'0'. The SW should write '0' into these locations, reset
value.
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