AK4356 Datasheet, PDF (23/29 Pages) Asahi Kasei Microsystems – 192kHz 24 Bit IX-CHANNEL DAC FOR DVD-AUDIO

ASAHI KASEI
[AK4356]
Addr Register Name
D7
02H Speed & Power Down Control 0
Default
0
D6
D5
D4
D3
D2
D1
D0
0 DFS1 DFS0 PW3 PW2 PW1 RSTN
0
0
0
1
1
1
1
RSTN: Internal timing reset
0: Reset. DZF pins of all channels go to “H” and registers are not initialized.
1: Normal operation
When the states of SLOW, DIF2-0, CKS2-0 or DFS0-1 changes, the AK4356 should be reset
by PDN pin or RSTN bit. Some click noise occurs at that timing.
PW3-1: Power-down control (0: Power-down, 1: Power-up)
PW1: Power down control of DAC1
PW2: Power down control of DAC2
PW3: Power down control of DAC3
All sections are powered-down by PW1=PW2=PW3=0.
DFS1-0: Sampling speed control (See Table 1.)
00: Normal speed
01: Double speed
10: 4 times speed (DAC2 and DAC3 are automatically powered down.)
Register bit of DFS0 is ORed with the DFS0 pin.
When sampling speed mode is changed between normal and double/4 times speed mode, DFS1-0 bit
should be changed after changing MCLK frequency (figure below). Some click noise occurs at this
timing.
MCLK
Sampling
speed ^normal
4 times
/double
normal
When sampling speed mode is changed between double and 4 times speed mode, sampling mode should
be changed to normal speed mode after changing MCLK frequency, and then it should be changed to
double/4 times speed mode (figure below). Some click noise occurs at those changing timing.
MCLK
Sampling _double/
speed _{4 times}
normal
4 times
/double
Addr Register Name
03H De-emphasis Control
Default
D7 D6
D5
D4
D3
D2
D1
D0
0
0 DEMC1 DEMC0 DEMB1 DEMB0 DEMA1 DEMA0
0
0
0
1
0
1
0
1
DEMA1-0: De-emphasis response control for DAC1 data on SDTI1 (See Table 4,5.)
Initial: “01”, OFF
DEMB1-0: De-emphasis response control for DAC2 data on SDTI2 (See Table 4,5.)
Initial: “01”, OFF
DEMC1-0: De-emphasis response control for DAC3 data on SDTI3 (See Table 4,5.)
Initial: “01”, OFF
M0072-E-01
- 23 -
1999/09