參數(shù)資料
型號(hào)： SM5878AV
廠商： Seiko NPC Corporation
英文描述： 3rd-order , 2-channel D/A converter
中文描述： 三階2聲道D / A轉(zhuǎn)換
文件頁(yè)數(shù)： 12/16頁(yè)
文件大?。?/td> 143K
代理商： SM5878AV
SM5878AM/AV
NIPPON PRECISION CIRCUITS—12
FUNCTIONAL DESCRIPTION
System Clock/Speed Switching (XTI, XTO, CKO, DS)
The system clock on XTI can be set to run at one of
two speeds, 384fs (normal speed) or 192fs (double-
speed), where fs is the input frequency on LRCI. The
speed for CD playback is set by the input level on
DS, as shown in table 1. The system clock should be
fixed at 16.9344 MHz.
Note that the input clock accuracy and signal-to-
noise ratio greatly influence the AC analog
characteristics.
The system clock can be controlled by a crystal
oscillator comprising a crystal connected between
XTI and XTO and the built-in CMOS inverter.
Alternatively, an external system clock can be input
on XTI. As the internal CMOS inverter has a
feedback resistor, the external clock can be AC
coupled to XTI. The system clock is output on CKO.
System Reset (RSTN)
The device should be reset in the following cases.
I
At power ON
I
When LRCI and/or the system clock XTI stop, or
other abnormalities occur.
The device is reset by applying a LOW-level pulse on
RSTN. At system reset, the internal arithmetic
operation and output timing counter are synchronized
on the next LRCI rising edge, as shown in figure 1.
Audio Data Input (DI, BCKI, LRCI)
The digital audio data is input on DI in MSB-first, 2s-
complement, 16-bit serial format.
Serial data bits are read into the SIPO register (serial-
to-parallel converter register) on the rising edge of the
bit clock BCKI.
The arithmetic operation and output timing are
independent of the input timing. Accordingly, after a
reset, as long as the clock frequency ratio between
LRCI and the system clock XTI is maintained, phase
differences between LRCI, BCKI and the system
clock XTI do not affect the functional operation. Also,
any jitter present on the data input clock does not
appear as output pulse jitter.
The bit clock frequency on BCKI should be between
32fs and 64fs.
Table 1. System clock select
Parameter
Symbol
DS
LOW
(normal
speed)
HIGH
(double
speed)
XTI input clock
frequency
f
XI
(= 1/t
XI
)
384fs
192fs
CD playback XTI
frequency
f
XI
16.9344 MHz
at fs = 44.1
kHz
16.9344 MHz
at fs = 88.2
kHz
CKO output clock
frequency
f
CO
384fs
192fs
Internal system
clock period
T
SYS
t
XI
t
XI
Figure 1. System reset timing
RSTN
Internal reset
LO
Outputs muted
RO
LRCI
LOW
1
2
3
9
10
相關(guān)PDF資料
PDF描述
SM5879 3rd-order , 2-channel D/A Converter
SM5879AV 3rd-order , 2-channel D/A Converter
SM5882AS Audio 3rd-order . D/A Converter
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
SM5879 制造商:NPC 制造商全稱:Nippon Precision Circuits Inc 功能描述:3rd-order , 2-channel D/A Converter
SM5879AV 制造商:NPC 制造商全稱:Nippon Precision Circuits Inc 功能描述:3rd-order , 2-channel D/A Converter
SM5882-006-D-B 功能描述:板上安裝壓力/力傳感器 RoHS:否 制造商:Honeywell 工作壓力:0 bar to 4 bar 壓力類型:Gage 準(zhǔn)確性:+ / - 0.25 % 輸出類型:Digital 安裝風(fēng)格:Through Hole 工作電源電壓:5 V 封裝 / 箱體:SIP 端口類型:Dual Radial Barbed, Same sides
SM5882-006-D-B-TR 功能描述:板上安裝壓力/力傳感器 RoHS:否 制造商:Honeywell 工作壓力:0 bar to 4 bar 壓力類型:Gage 準(zhǔn)確性:+ / - 0.25 % 輸出類型:Digital 安裝風(fēng)格:Through Hole 工作電源電壓:5 V 封裝 / 箱體:SIP 端口類型:Dual Radial Barbed, Same sides
SM5882-006-G-B 功能描述:板上安裝壓力/力傳感器 0.6psig Co-integratd RoHS:否 制造商:Honeywell 工作壓力:0 bar to 4 bar 壓力類型:Gage 準(zhǔn)確性:+ / - 0.25 % 輸出類型:Digital 安裝風(fēng)格:Through Hole 工作電源電壓:5 V 封裝 / 箱體:SIP 端口類型:Dual Radial Barbed, Same sides
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