SX1441EVK Semtech, SX1441EVK Datasheet - Page 19

• Manufacturer Part Number: SX1441EVK
• Description: KIT DEV FOR SX1441
• Manufacturer: Semtech
• Series: EasyBlue™r
• Type: Bluetoothr

Specifications of SX1441EVK

• For Use With/related Products: SX1441
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Contents: -
• Other names: SX1441DVK; SX1441DVK

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© Semtech 2006
Pos
7
6
5
4
3
2
1
0
Pos
7:4
3
2
1
0
Pos
7:2
1
0
Pos
7:5
4:2
1:0
Pos
7:6
5:4
RegSysClock
CpuSel
SelLowPresIn
EnableSysClk
-
ColdSlwClock
-
EnableSlwClock
EnableRC
RegSysMisc
-
reserved
reserved
OutputCk32kHz
OutputCkCpu
RegSysPre0
-
reserved
ResPre
RegSysRcTrim1
-
RCDivFactor
RCCoarseMSB
RegSysRcTrim2
-
RCCoarseLSB
rw
rw
rw
r/w
rw
rw
r
r
r
r/w
r
rw
rw
rw
rw
r/w
r
r
w
r/w
r
rw
rw
r/w
r
rw
Reset
0
0
0
0
1
0
0
1
Table 16 - RegSysClock register
Table 19 - RegSysTrim1 register
Table 18 - RegSysPre0 register
Table 17 - RegSysMisc register
Reset
0000
0
0
0
0
Reset
000000
0
0
Reset
000
000
01
Reset
00
00
Function
1 = Low Speed Clock Selected (generally: an external 32kHz
clock crystal)
0 = High Speed Clock Selected (the nature of the clock
selected will depend on the EnableSysClk bit value).
1 = Force the SLW_CLOCK_IN clock as the low prescaler
input when a low speed clock is available (i.e. EnableSlwClock
bit). Otherwise the high prescaler is selected.
0 = Select the SLW_CLOCK_IN clock as the low prescaler
input when a low speed clock is available (i.e. EnableSlwClock
bit) and the ckRC clock has been selected as the High Speed
Clock (i.e. EnableSysClk bit).
1 = SYS_CLOCK_IN clock is selected
0 = ckRC clock is selected
reserved
Flag determining when the low speed clock starting phase is
finished:
1 = SLW_CLOCK_IN still on the starting phase (32768 cycles)
0 = SLW_CLOCK_IN starting phase finished
reserved
Should be set to ‘1’ when SLW_CLOCK_IN is available, ‘0’
otherwise.
1 = enable ckRC
0 = disable ckRC
19
Function
reserved
reserved
reserved
output ck32kHz on pad PB[3]
output CkCpu on pad PB[2]
Function
reserved
reserved
1 = reset the low prescaler
Function
reserved
Divide RC frequency by 2
RC coarse adjustment (MSB)
Function
reserved
RC coarse adjustment (LSB)
SX1441 – Bluetooth® 1.2 SoC
RcDivFactor
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Data Sheet