
187
NAME
REG OFFSET
(hex)
5E
DESCRIPTION
Intrusion/Oscillator
Select
Default = 0x06
On VBAT POR
Default = 0x02 or
0x06 on VTR POR
The default will be
0x06h if an intrusion
event occurred
under battery power
only or if a VBAT
POR occurred
(R/W)
Bit 2 Cannot Be
Written to ‘1’
Bit[7:3] Reserved, reads return 0
Bit[2] INTRUSION; cannot be written to ‘1’
When the nINTRSN input is low, this bit will be set.
Software must write a '0' to clear this bit. This bit cannot
be cleared until nINTRSN goes low. Writes of ‘1’ to this
bit are ignored. This bit is also set on VBAT POR.
Bits[1:0] Oscillator Select.
See also Bit 0 of the CLOCKI32 Configuration Register
(CLK32_PRSN). If Bit 0 of the CLOCKI32 Configuration
Register is ‘1’ then the bits defined below must be ‘01’ for
the internal ring oscillator to be used when VCC=0.
The functions that are clocked by one of these oscillators
are the LED blink rate in the S4/S5 state, the power
button pulse and the power button input (nPWRBTN_IN)
debounce and “wake on specific key”.
00 – 32kHz clock is always used for the functions
described above. The ring oscillator is turned off.
(CLK32_PRSN=0)
01 – Internal ring oscillator is always used for functions
described above while VCC=0. When VCC is active, the
32kHz clock is derived from the 14MHz clock.
(CLK32_PRSN=1)
10 – The 32kHz input is always used for the functions
described above. The internal ring oscillator is not used.
This is the default condition. (CLK32_PRSN=0)
11 – Reserved
Keyboard Scan Code
Bit[0] LSB of Scan Code
. . .
. . .
. . .
Bit[7] MSB of Scan Code
Bit[0] Read/Write
Bits[7:1] Read-Only, reads always return 0
Keyboard Scan
Code
Default = 0x00
On VBAT POR
5F
(R/W)
PM1_CNTRL1
Default = 0x00
On VTR POR
60
R/W – Bit[0]
Read Only –
Bits[7:1]
61
PM1_CNTRL2
Default = 0x00
On VTR POR
R/W – Bits[4:2]
Read Only –
Bits[7,6,1,0]
Write Only –
Bit[5]
Bits[1:0] Read-Only, reads always return 0
Bits[4:2] Read/Write
Bit[5] Write-Only. Reads always return 0; writing a ‘1’ to
bit 5 is an SMI event
Bits[7:6] Read-Only, reads always return 0