PCM1604 BURR-BROWN [Burr-Brown Corporation], PCM1604 Datasheet - Page 21

• Manufacturer Part Number: PCM1604
• Description: 24-Bit, 192kHz Sampling,6-Channel, Enhanced Multi-Level, Delta-Sigma DIGITAL-TO-ANALOG CONVERTER
• Manufacturer: BURR-BROWN [Burr-Brown Corporation]

REGISTER 9
R/W
FLT0
CLKD
CLKE
FMT[2:0]
Read/Write Mode Select
When R/W = 0, a Write operation is performed.
When R/W = 1, a Read operation is performed.
Default Value: 0
Digital Filter Roll-Off Control
These bits are Read/Write.
Default Value: 000
Bit FLT0 allows the user to select the digital filter roll-off that is best suited to their application. Two filter roll-
off sections are available: Sharp or Slow. The filter responses for these selections are shown in the Typical
Performance Curves section of this data sheet.
SCKO Frequency Selection
This bit is Read/Write.
Default Value: 0
The CLKD bit is used to determine the clock frequency at the system clock output pin, SCKO.
SCKO Output Enable
This bit is Read/Write.
Default Value: 0
The CLKE bit is used to enable or disable the system clock output pin, SCKO. When SCKO is enabled, it will
output either a full or half rate clock, based upon the setting of the CLKD bit.
Audio Interface Data Format
These bits are Read/Write.
Default Value: 000
The FMT[2:0] bits are used to select the data format for the serial audio interface.
B15
R/W
FLT0 = 0
FLT0 = 1
CLKD = 0
CLKD = 1
CLKE = 0
CLKE = 1
FMT[2:0]
000
001
010
011
100
101
110
111
IDX6
B14
IDX5
B13
B
B
Sharp Roll-Off (default)
Slow Roll-Off
Full Rate, f
Half Rate, f
SCKO Enabled (default)
SCKO Disabled
Audio Data Format Selection
24-Bit Standard Format, Right-Justified Data (default)
20-Bit Standard Format, Right-Justified Data
18-Bit Standard Format, Right-Justified Data
16-Bit Standard Format, Right-Justified Data
I
Left-Justified Format, 16- to 24-Bits
Reserved
Reserved
2
S Format, 16- to 24-bits
IDX4
B12
IDX3
B11
SCKO
SCKO
IDX2
B10
= f
= f
SCKI
SCKI
IDX1
/2
B9
(default)
21
IDX0
B8
res
B7
res
B6
PCM1604, PCM1605
FLT0
B5
CLKD
B4
CLKE
B3
FMT2
B2
FMT1
B1
FMT0
B0
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