参数资料
型号: L64007
厂商: LSI CORP
元件分类: 消费家电
英文描述: SPECIALTY CONSUMER CIRCUIT, PQFP160
封装: PLASTIC, QFP-160
文件页数: 3/166页
文件大小: 1015K
代理商: L64007
register
18 Wed May 28 17:37:25 1997
Draft 1/21/97
4-18
Registers
PRE.4 for Rev. D
Copyright 1997 by LSI Logic Corporation. All rights reserved.
4.7
Clock
Reference
Registers
(Group 4)
The host processor uses this group of registers to monitor the frequency
control loop, which locks the decoder frequency on the transmitted pro-
gram frequency. They reside in the Sigma Delta Modulator (SDM) and
support the host CPU in PCR locking (see Section 2.2, Clock Recovery
4.7.1
Sigma Delta
Modulator
(SDM)
The SDM is a 16-bit register used to control the output waveforms com-
ing from the MCLK_SDC pin. This programmed value generates various
pulse trains, changing the duty cycle of the output waveforms.
SDM
Sigma Delta Modulation Value
[15:0]
This 16-bit eld determines the number of pulses, and
the duty cycle of these pulses, generated on the
MCLK_SDC output pin. The basic duty cycle unit is
27 MHz.
After reset, the value is 0x8000.
15
0
SDM
Field Value
Pulses Generated and Duty Cycle
0x0000
No pulses; output is LOW
0x0001
1 pulse every 64K clocks
0x0002
2 pulses every 64K clocks (evenly distributed)
0x0003
3 pulses every 64K clocks
.
0x8000
32K pulses every 64K clocks (= value after
reset)
.
相关PDF资料
PDF描述
L64013A1 SPECIALTY CONSUMER CIRCUIT, PQFP100
L64014A SPECIALTY CONSUMER CIRCUIT, PQFP144
L64015 SPECIALTY CONSUMER CIRCUIT, PQFP144
L64020XDC SPECIALTY CONSUMER CIRCUIT, CBGA208
L64020XQC SPECIALTY CONSUMER CIRCUIT, PQFP160
相关代理商/技术参数
参数描述
L64010ADC 制造商:未知厂家 制造商全称:未知厂家 功能描述:Multiplier/Accumulator
L64010ADCC 制造商:未知厂家 制造商全称:未知厂家 功能描述:Multiplier/Accumulator
L64010ADM 制造商:未知厂家 制造商全称:未知厂家 功能描述:Multiplier/Accumulator
L64010ADMB 制造商:未知厂家 制造商全称:未知厂家 功能描述:Multiplier/Accumulator
L64010ADMC 制造商:未知厂家 制造商全称:未知厂家 功能描述:Multiplier/Accumulator