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參數資料
型號: W6811
廠商: WINBOND ELECTRONICS CORP
英文描述: 2-WIRE FIELD PROGRAMMABLE W/TIN PLATING
中文描述: 單通道聲帶編解碼器
文件頁數: 7/37頁
文件大小: 457K
代理商: W6811
W6811
Publication Release Date: October 23, 2003
- 7 -
Revision A10
6. PIN DESCRIPTION
Pin
Name
Pin
No.
V
DD
*
Functionality
V
REF
1
A
This pin is used to bypass the on-chip 2.5V voltage reference. It needs to be
decoupled to V
SSA
through a 0.1
μ
F ceramic decoupling capacitor. No
external loads should be tied to this pin.
RO-
2
A
Inverting output of the receive smoothing filter. This pin can typically drive a 2
k
load to 1.575 volt peak referenced to the analog ground level.
PAI
3
A
This pin is the inverting input to the power amplifier. Its DC level is at the V
AG
voltage.
PAO-
4
A
Inverting power amplifier output. This pin can drive a 300
load to 1.575 volt
peak referenced to the V
AG
voltage level.
Non-inverting power amplifier output. This pin can drive a 300
load to 1.575
Volt peak referenced to the V
AG
voltage level.
Analog power supply. This pin should be decoupled to V
SSA
with a 0.1
μ
F
ceramic capacitor.
PAO+
5
A
V
DDA
6
A
NC
7
Not Connected
V
DDD
8
D
Digital power supply. This pin should be decoupled to V
SSD
with a 0.1
μ
F
ceramic capacitor. For correct operation, V
DDD
value should always be lower
then V
DDA
.
8 kHz Frame Sync input for the PCM receive section. This pin also selects
channel 0 or channel 1 in the GCI and IDL modes. It can also be connected
to the FST pin when transmit and receive are synchronous operations.
FSR
9
D
PCMR
10
D
PCM input data receive pin. The data needs to be synchronous with the FSR
and BCLKR pins.
BCLKR
11
D
PCM receive bit clock input pin. This pin also selects the interface mode. The
GCI mode is selected when this pin is tied to V
SSD
. The IDL mode is selected
when this pin is tied to V
DDD
. This pin can also be tied to the BCLKT when
transmit and receive are synchronous operations.
PUI
12
D
Power up input signal. When this pin is tied to V
DDD
, the part is powered up.
When tied to V
SSD
, the part is powered down.
System master clock input. Possible input frequencies are 256 kHz, 512 kHz,
1536 kHz, 1544 kHz, 2048 kHz, 2560 kHz & 4096 kHz. For a better
performance, it is recommended to have the MCLK signal synchronous and
aligned to the FST signal. This is a requirement in the case of 256 and 512
kHz frequency.
MCLK
13
D
BCLKT
14
D
PCM transmit bit clock input pin.
PCMT
15
D
PCM output data transmit pin. The output data is synchronous with the FST
and BCLKT pins.
FST
16
D
8 kHz transmit frame sync input. This pin synchronizes the transmit data
bytes.
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