參數(shù)資料
型號(hào): TDA1386
廠商: NXP Semiconductors N.V.
英文描述: Noise shaping filter DAC
中文描述: 噪聲整形濾波器數(shù)模轉(zhuǎn)換器
文件頁數(shù): 6/24頁
文件大?。?/td> 167K
代理商: TDA1386
1998 Jan 06
6
Philips Semiconductors
Product specification
Noise shaping filter DAC
TDA1386T
FUNCTIONAL DESCRIPTION
The TDA1386T CMOS DAC incorporates an up-sampling
filter, a noise shaper, continuous calibrated current
sources and operational amplifiers.
System clock and data input format
The TDA1386T accommodates slave mode only
consequently, in all applications, the system devices must
provide the 256f
s
system clock.
The TDA1386T supports the following data input modes:
I
2
S-bus with data word length of up to 20 bits.
LSB fixed serial format with data word length of 16, 18
or 20 bits. As this format idles on the MSB it is necessary
to know how many bits are being transmitted.
The data input formats are illustrated in Fig.7. Left and
right data-channel words are time multiplexed.
Table 1
Data input format and system clock
CKSL1
CKSL2
DATA INPUT FORMAT
SYSTEM CLOCK
NORMAL SPEED
DOUBLE SPEED
0
0
1
1
0
1
0
1
I
2
S-bus
LSB fixed 16 bits
LSB fixed 18 bits
LSB fixed 20 bits
256f
s
256f
s
256f
s
256f
s
128f
s
128f
s
128f
s
128f
s
Device operation
When the APPL pin is held HIGH and APP3 is held LOW,
pins APP0, APP1 and APP2 form a microcontroller
interface. When the APPL pin is held LOW, pins APP0,
APP1, APP2 and APP3 form pseudo-static application
pins (TDA1305T pin compatible).
P
SEUDO
-
STATIC APPLICATION MODE
(APPL =
LOGIC
0)
In this mode, the device operation is controlled by
pseudo-static application pins (APP0: attenuation mode
control; APP1: double-speed mode control; APP2: mute
mode control and APP3: de-emphasis mode control).
In the pseudo-static application mode the TDA1386T is pin
compatible with the TDA1305T slave mode. The
correspondence between TDA1386T pin number,
TDA1386T pin name, TDA1305T pin name and a
description of the effects is given in Table 2.
Table 2
Pseudo-static application mode
PIN NAME
PIN NUMBER
TDA1305T
FUNCTION
LOGIC
VALUE
DESCRIPTION
APP0
17
ATSB
0
12 dB attenuation (from full scale) activated
(only if MUSB = 1)
full scale (only if MUSB = 1)
double-speed mode
normal-speed mode
samples decrease to mute level
level in accordance with ATSB
de-emphasis OFF (44.1 kHz)
de-emphasis ON (44.1 kHz)
1
0
1
0
1
0
1
APP1
16
DSMB
APP2
15
MUSB
APP3
13
DEEM1
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