參數(shù)資料
型號(hào): L64777
廠商: LSI CORP
元件分類(lèi): 消費(fèi)家電
英文描述: Digital Video Broadcasting(DVB)-Compliant,quadrature amplitude modulation (QAM)Modulator(數(shù)字視頻廣播系統(tǒng)適配的積分調(diào)幅調(diào)制器)
中文描述: SPECIALTY CONSUMER CIRCUIT, PQFP120
封裝: 32 MM, PLASTIC, QFP-120
文件頁(yè)數(shù): 76/124頁(yè)
文件大?。?/td> 988K
代理商: L64777
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4-14
Register Descriptions
4.2.7 Registers 21 and 22
REF_DUR
Duration Between NCO Step Updates
This parameter determines the duration between the
NCO step updates in multiples of the sync length. These
are NCO-related register fields; they are used only in PLL
Mode 2. Bit 0 resets to 1; all other bits reset to 0.
R/W [15:0]
4.2.8 Registers 23 and 24
PROB_DUR
Byte Clock Duration
This parameter determines the duration for the byte clock
measurement in units of 256 ICLK cycles. These are
NCO-related register fields; they are used only in PLL
Mode 2. The reset value is 0.
R/W [15:0]
4.2.9 Register 25
N_PCLK
PCLK Cycles
This is the number of PCLK cycles during one ICLK byte
clock. The value in this register is valid only if the
MEASUREMENT_DONE bit in the NCO control register
is set. These are NCO-related register fields; they are
used only in PLL Mode 2. The reset value is 0.
R/W [7:0], R
4.2.10 Registers 26, 27, and 28
NM_COUNT
R [23:0]
This value is the number of CLK cycles found within the
duration of the (n
1) PCLK cycles. The value in this
15
0
REF_DUR
15
0
PROB_DUR
7
0
N_PCLK
23
0
NM_COUNT
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