参数资料
型号: AT73C209-EK
厂商: Atmel
文件页数: 21/63页
文件大小: 0K
描述: BOARD EVAL FOR AT73C209
标准包装: 1
系列: PMAAC™
主要目的: 电源管理,专用型: 手机
已用 IC / 零件: AT73C209
已供物品: 板,CD,文档
AT73C209
8.5.11 DAC Miscellaneous
Register Name:
Access Type:
Address:
DAC_MISC
Read/Write
0x0A
7
RSRV1
6
RSRV2
5
DINTSEL
4
3
DITHEN
2
DEEMPEN
1
NBITS
0
Register (0x0A): Miscellaneous
Bit
1:0
2
3
5:4
7:6
Name
NBITS<1:0>
DEEMPEN
DITHEN
DINTSEL<5:4>
RSRV<1:2>
Description
Data interface word length
De-emphasis enable (L to disable, H to enable)
Dither enable (L to disable, H to enable)
I2S data format selector
Reserved Bits
Reset Value
NBITS<1:0>=10
DEEMPEN = 0
DITHEN = 0
DINTSEL<5:4>=00
00
? Interface Word Length
The selection of input sample size is done using the nbits<1:0> register according to the following table:
NBITS<1:0>
00
01
10
Format
16 bits
18 bits
20 bits
? De-emphasis and Dither Enable
The circuit features a de-emphasis filter for the playback channel. To enable the de-emphasis filtering the deemphen signal
must be set to high.
Likewise, the dither option (added in the playback channel) is enabled by setting the dithen signal to High.
? I2S Data Format Selector
The selection between modes is done using the dintsel<1:0> signal according to the following table:
DINTSEL<5:4>
00
01
10
Format
I2S Justified
MSB Justified
LSB Justified
21
6365A–PMAAC–12-Mar-08
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