參數(shù)資料
型號: MC68HC05CT4FN
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 2.048 MHz, MICROCONTROLLER, PQCC44
封裝: PLASTIC, LCC-44
文件頁數(shù): 130/142頁
文件大小: 624K
代理商: MC68HC05CT4FN
NON-DISCLOSURE
AGREEMENT
REQUIRED
Dual Phase-Locked Loop (PLL)
General Release Specification
MC68HC05CT4 Rev. 2.0
88
Dual Phase-Locked Loop (PLL)
MOTOROLA
TXON — TX Counter Enable
When set, this bit enables the PLL transmit counter.
When clear, it stops the counter in a reset state to save power. TXON
also shuts off the associated phase detector and holds it in three-
state. Initializing the transmit counter before it is enabled is
recommended.
REFON — Reference Counter Enable
When set, this bit enables the PLL reference counter.
When clear, REFON stops the reference counter in a reset state to
save power. Initializing the reference counter before it is enabled is
recommended.
RLOCK — Receive Lock Detect
This bit is read only and is not latched. When set, this bit is a real-time
indication of an active correction pulse from the phase detect in
progress. When clear, no correction is made and the output from the
phase detect is three-stated. Using multiple reads at known intervals
will allow the user to filter and judge a LOCK condition.
TLOCK — Transmit Lock Detect
This bit is read only and is not latched.When set, this bit is a real-time
indication of an active correction pulse from the phase detect in
progress. When clear, no correction is made and the output from the
phase detect is three-stated. Using multiple reads at known intervals
will allow the user to filter and judge a LOCK condition.
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