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参数资料
| 型号： | TAS5508BPAGG4 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 消费家电 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP64 |
| 封装： | GREEN, PLASTIC, TQFP-64 |
| 文件页数： | 11/103页 |
| 文件大小： | 1198K |
| 代理商： | TAS5508BPAGG4 |
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2.1.3
Terminal Descriptions
TAS5508B
8-Channel Digital Audio PWM Processor
www.ti.com
SLES162C – DECEMBER 2005 – REVISED JULY 2009
TERMINAL
5-V
TYPE(1)
TERMINATION(2)
DESCRIPTION
TOLERANT
NAME
NO.
AVDD_PLL
9
P
3.3-V analog power supply for PLL. This terminal can be connected to the same
power source used to drive power terminal DVDD; but to achieve low PLL jitter,
this terminal should be bypassed to AVSS_PLL with a 0.1-
F low-ESR
capacitor.
AVSS
5, 6
P
Analog ground
AVSS_PLL
8
P
Analog ground for PLL. This terminal should reference the same ground as
terminal DVSS; but to achieve low PLL jitter, ground noise at this terminal must
be minimized. The availability of the AVSS terminal allows a designer to use
optimizing techniques such as star ground connections, separate ground planes,
or other quiet ground-distribution techniques to achieve a quiet ground reference
at this terminal.
BKND_ERR
37
DI
Pullup
Active-low. A back-end error sequence is generated by applying logic low to this
terminal. The BKND_ERR results in no change to any system parameters, with
all H-bridge drive signals going to a hard-mute state (M-state).
DVDD
15, 36
P
3.3-V digital power supply. It is recommended that decoupling capacitors of
0.1
F and 10 F be mounted close to this pin (see application schematics).
DVDD_PWM
54
P
3.3-V digital power supply for PWM
DVSS
16, 34,
P
Digital ground
35, 38
DVSS_PWM
53
P
Digital ground for PWM
HP_SEL
12
DI
5 V
Pullup
Headphone in/out selector. When a logic low is applied, the headphone is
selected (speakers are off). When a logic high is applied, speakers are selected
(headphone is off).
LRCLK
26
DI
5 V
Serial-audio data left/right clock (sampling-rate clock)
MCLK
63
DI
5 V
Pulldown
MCLK is a 3.3-V master clock input. The input frequency of this clock can range
from 4 MHz to 50 MHz.
MUTE
14
DI
5 V
Pullup
Soft mute of outputs, active-low (muted signal = a logic low, normal operation =
a logic high). The mute control provides a noiseless volume ramp to silence.
Releasing mute provides a noiseless ramp to previous volume.
OSC_CAP
18
AO
Oscillator capacitor
PDN
13
DI
5 V
Pullup
Power down, active-low. PDN powers down all logic and stops all clocks
whenever a logic low is applied. The internal parameters are preserved through
a power-down cycle, as long as RESET is not active. The duration for system
recovery from power down is 100 ms.
PLL_FLT_RET
2
AO
PLL external filter return
PLL_FLTM
3
AO
PLL negative input. Connected to PLL_FLT_RET via an RC network
PLL_FLTP
4
AI
PLL positive input. Connected to PLL_FLT_RET via an RC network
PSVC
32
O
Power-supply volume control PWM output
PWM_HPML
59
DO
PWM left-channel headphone (differential –)
PWM_HPMR
61
DO
PWM right-channel headphone (differential –)
PWM_HPPL
60
DO
PWM left-channel headphone (differential +)
PWM_HPPR
62
DO
PWM right-channel headphone (differential +)
PWM_M_1
40
DO
PWM 1 output (differential –)
PWM_M_2
42
DO
PWM 2 output (differential –)
PWM_M_3
44
DO
PWM 3 output (differential –)
PWM_M_4
46
DO
PWM 4 output (differential –)
PWM_M_5
55
DO
PWM 5 output (lineout L) (differential –)
PWM_M_6
57
DO
PWM 6 output (lineout R) (differential –)
PWM_M_7
49
DO
PWM 7 output (differential –)
PWM_M_8
51
DO
PWM 8 output (differential –)
PWM_P_1
41
DO
PWM 1 output (differential +)
PWM_P_2
43
DO
PWM 2 output (differential +)
PWM_P_3
45
DO
PWM 3 output (differential +)
(1)
Type: A = analog; D = 3.3-V digital; P = power/ground/decoupling; I = input; O = output
(2)
All pullups are 20-
A weak pullups and all pulldowns are 20-A weak pulldowns. The pullups and pulldowns are included to ensure
proper input logic levels if the terminals are left unconnected (pullups
→ logic-1 input; pulldowns → logic-0 input). Devices that drive
inputs with pullups must be able to sink 20
A while maintaining a logic-0 drive level. Devices that drive inputs with pulldowns must be
able to source 20
A while maintaining a logic-1 drive level.
Description
15
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| TAS5508BPAGR | 功能描述:音频 DSP 8 Ch Digital Audio PWM Processor RoHS:否 制造商:Texas Instruments 工作电源电压: 电源电流: 工作温度范围: 安装风格: 封装 / 箱体: 封装:Tube |
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| TAS5508CPAGR | 功能描述:音频 DSP 8Ch PWM Processor RoHS:否 制造商:Texas Instruments 工作电源电压: 电源电流: 工作温度范围: 安装风格: 封装 / 箱体: 封装:Tube |
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