Modem Modes of Operation
MC1321x Reference Manual, Rev. 1.6
7-20
Freescale Semiconductor
7.6
2.4GHz PLL Out-of-Lock Interrupt
Successful wireless data transmission and reception is predicated on the proper channel frequency being
maintained internally by the modem. Sophisticated control circuitry and design techniques assure that the
internal 2.4GHz local oscillator stays on the selected channel frequency. In the unusual event that the PLL
loses lock, the host is notified via the 'Out-of-Lock Interrupt'. If lock indication circuitry indicates an
out-of-lock condition, status bit pll_lock_irq, IRQ_Status Register 24, Bit 15, is set and any CCA, RX or
TX operation in progress is automatically terminated. The modem returns immediately to the IDLE state
to await interrupt service routine handling. Also, the IRQ is asserted provided the mask bit pll_lock_mask,
IRQ_Mask Register 05, Bit 9, is set.
NOTE
Freescale recommends that software enable the pll_lock_mask during CCA,
RX, and TX operations. The pll_lock_irq status bit is set by an out-of-lock
condition and MUST be cleared by an IRQ_Status Register read before
another CCA, RX, or TX operation can be enabled. As already stated, an
out-of-lock condition aborts the present operation and if the pll_lock_irq
status is not cleared, any subsequent CCA, RX, or TX operation requested
is immediately aborted.
4C
-8.5
25.9
Reg 12[3:0] default
5C
-7.6
26.0
Reg 12[3:0] default
6C
-7.2
26.1
Reg 12[3:0] default
7C
-7.0
26.2
Reg 12[3:0] default
8C
-1.7
28.0
Reg 12[3:0] default
9C
-1.6
28.3
Reg 12[3:0] default
AC
-0.77
28.6
Reg 12[3:0] default
BC (default)
-0.66
28.8
Reg 12[7:0] default
CC
0.62
30.6
Reg 12[3:0] default
DC
1.19
31.9
Reg 12[3:0] default
EC
1.23
34.9
Reg 12[3:0] default
FC
1.42
35.3
Reg 12[3:0] default
FD
2.2
35.0
FE
2.9
35.0
FF
3.4
35.0
Table 7-3. MC1321x Power Output vs. SPI Settings (Register 12) (continued)
PA Power Adjust
Reg 12[7:0]
(Hex)
Typical Differential Power at
Output Contact (dBm)
Typical PA Current
(mA)
Comments
Summary of Contents for freescale semiconductor MC13211
Page 40: ...MC1321x Pins and Connections MC1321x Reference Manual Rev 1 6 2 6 Freescale Semiconductor...
Page 166: ...Modem Modes of Operation MC1321x Reference Manual Rev 1 6 7 22 Freescale Semiconductor...
Page 172: ...Modem Interrupt Description MC1321x Reference Manual Rev 1 6 8 6 Freescale Semiconductor...
Page 186: ...MCU Modes of Operation MC1321x Reference Manual Rev 1 6 10 8 Freescale Semiconductor...
Page 208: ...MCU Memory MC1321x Reference Manual Rev 1 6 11 22 Freescale Semiconductor...
Page 244: ...MCU Parallel Input Output MC1321x Reference Manual Rev 1 6 13 20 Freescale Semiconductor...
Page 288: ...MCU Central Processor Unit CPU MC1321x Reference Manual Rev 1 6 15 20 Freescale Semiconductor...
Page 308: ...MCU Timer PWM TPM Module MC1321x Reference Manual Rev 1 6 17 16 Freescale Semiconductor...
Page 338: ...Inter Integrated Circuit IIC MC1321x Reference Manual Rev 1 6 19 14 Freescale Semiconductor...
Page 372: ...Development Support MC1321x Reference Manual Rev 1 6 21 20 Freescale Semiconductor...
