參數(shù)資料
型號: CS4299-JQZ
廠商: Cirrus Logic Inc
文件頁數(shù): 5/52頁
文件大?。?/td> 0K
描述: IC CODEC AC 97 W/SRC 48LQFP
標(biāo)準(zhǔn)包裝: 250
系列: SoundFusion™
類型: 音頻編解碼器 '97
數(shù)據(jù)接口: 串行
分辨率(位): 18 b,20 b
ADC / DAC 數(shù)量: 1 / 1
三角積分調(diào)變:
動態(tài)范圍,標(biāo)準(zhǔn) ADC / DAC (db): 85 / 87
電壓 - 電源,模擬: 4.75 V ~ 5.25 V
電壓 - 電源,數(shù)字: 4.75 V ~ 5.25 V
工作溫度: 0°C ~ 70°C
安裝類型: 表面貼裝
封裝/外殼: 48-LQFP
供應(yīng)商設(shè)備封裝: 48-LQFP(7x7)
包裝: 管件
產(chǎn)品目錄頁面: 754 (CN2011-ZH PDF)
其它名稱: 598-1044
CS4299
13
3. AC LINK FRAME DEFINITION
The AC-link is a bidirectional serial port with data
organized into frames consisting of one 16-bit and
twelve 20-bit time-division multiplexed slots. The
first slot, called the tag slot, contains bits indicating
if the CS4299 is ready to receive data (input frame)
and which, if any, other slots contain valid data.
Slots 1 through 12 contain audio or control/status
data. Both the serial data output and input frames
are defined from the controller perspective, not
from the CS4299 perspective.
The controller synchronizes the beginning of a
frame with the assertion of the SYNC signal.
Figure 9 shows the position of each bit location
within the frame. The first bit position in a new se-
rial data frame is F0 and the last bit position in the
serial data frame is F255. When SYNC goes active
(high) and is sampled active by the CS4299 (on the
falling edge of BIT_CLK), both devices are syn-
chronized to a new serial data frame. The data on
the SDATA_OUT pin at this clock edge is the final
bit of the previous frame’s serial data. On the next
rising edge of BIT_CLK, the first bit of Slot 0 is
driven by the controller on the SDATA_OUT pin.
On the next falling edge of BIT_CLK, the CS4299
latches this data in, as the first bit of the frame.
20.8
s
(48 kHz)
Tag Phase
Data Phase
12.288 MHz
81.4 ns
SYNC
BIT_CLK
SDATA_OUT
SDATA_IN
F0
F1
F2
F16
F15
F14
F13
F12
F35
F56
F76
D19
F255
Valid
Frame
Slot 1
Valid
0
R/W
0
WD15
F36
F57
D19
D18
D19
D18
D19
RD15
0
F0
F1
F2
F16
F15
F14
F13
F12
F35
F56
F76
F255
F36
F57
F255
0
GPIO
INT
F96
D19
Slot 0
Slot 1
Slot 2
Slot 3
Slot 4
Slots 5-12
Slot 2
Valid
Slot 1
Valid
Slot 2
Valid
Codec
Ready
0
Slot 12
Valid
Codec
ID1
Codec
ID0
Slot 12
Valid
GPIO
INT
Bit Frame Position:
Figure 9. AC-link Input and Output Framing
DS319PP6
13
CS4299
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