mc68hc05ct4fn Freescale Semiconductor, Inc, mc68hc05ct4fn Datasheet - Page 87

• Manufacturer Part Number: mc68hc05ct4fn
• Description: Mc68hc05 Family Of Microcontrollers Mcus
• Manufacturer: Freescale Semiconductor, Inc

11.3 Registers
11.3.1 Dual Control Register
MC68HC05CT4
—
Rev. 2.0
Address:
The PLL has one 12-bit programmable counter, two 16-bit
programmable counters, and one control register.
The PLLCR contains bits that affect the operation of the PLL.
PLS1 and PLS0 — PLL Reference Counter Select
RXON — RX Counter Enable
Reset:
Read:
Write:
These bits select between the PLL reference counter MUX outputs.
This output signal then drives the phase detectors.
When set, this bit enables the PLL receive counter.
When clear, it stops the receive counter in a reset state to save power.
RXON also shuts off the associated phase detector and holds it in
three-state. Initializing the receive counter before it is enabled is
recommended.
Freescale Semiconductor, Inc.
For More Information On This Product,
$000A
Bit 7
0
Dual Phase-Locked Loop (PLL)
Go to: www.freescale.com
Table 11-1. PLL Reference Counter Select
PLS1 and PLS0
Figure 11-2. Dual PLL Control Register
= Unimplemented
TLOCK
6
0
00
01
10
11
RLOCK
5
0
PLL Reference Counter Output
12-Bit Counter
4 After 12-Bit Counter
5 After 12-Bit Counter
25 After 12-Bit Counter
REFON
4
0
TXON
3
0
Dual Phase-Locked Loop (PLL)
General Release Specification
RXON
2
0
PLS1
1
0
Registers
PLS0
Bit 0
0