ak7714 AKM Semiconductor, Inc., ak7714 Datasheet - Page 21

• Manufacturer Part Number: ak7714
• Description: 20-bit Audio Codec With Dsp And Delay Ram
• Manufacturer: AKM Semiconductor, Inc.

[ASAHI KASEI]
(1) Various settings
1) OPCL (pin 34): ADC and DAC connection selector pin (See Block Diagram on page 2.)
2) CTRL1 (pin 62) and CTRL0 (pin 56): clock output control pins
3) CKS1 (pin 64) and CKS0 (pin 63): Clock selector pin
4) SMODE (pin 65): Slave and master mode selector pin
M0018-E-00
Mode
1
2
3
4
Normally, OPCL is used in "L" or open. (Internal connection mode)
In this case, ADC output and DAC1/DAC2 inputs are directly connected to the DSP internally. At this time, leave the
SDINA (pin 12), SDIND1 (pin 17) and SDIND2 (pin 18) open or set to "L".
It should be noted that "L" is output from the SDOUTA (pin 14), SDOUTD1 (pin 15) and SDOUTD2 (pin 20).
When the OPCL is set to "H", the ADC output and DAC1/DAC2 inputs can be used independently from the DSP.
(Input/output formats are restricted.)
Note: SDINA supports only MSB-first 24-bit input (including I
Note: When CTRL1 and CTRL0 are used in the open state, Mode 1 will be selected.
a) Slave mode: SMODE = "L"
b) Master mode: SMODE = "H"
CLKO output and LRCLK and BITCLK outputs in the master mode can be fixed to "L" or "H"
by setting these two pins.
Sets LRCLK (pin 36) and BITCLK (pin 37) to either input or output.
LRCLK (1 fs) and BITCLK (48 fs or 64 fs) become input.
LRCLK (1 fs) and BITCLK (64 fs) become output.
CKS1
0
0
1
1
SDOUTA supports only MSB-first 20-bit output (including I
SDIND1 and SDIND2 support only MSB-first 20-bit inputs (including I
Output is set to "L" when I
Mode 4 can be used only when the AK7714 is used "Analog to Analog".
CTRL1
0
0
1
1
CKS0
0
1
0
1
2
S compatible.
CTRL0
0
1
0
1
Function Description
384fs
512fs
256fs
XTI
- 21 -
Output
CLKO
Test mode (disabled)
"L"
"L"
Disabled (This is a test mode, so do not use it.)
2
S compatibility).
2
fs: Sampling frequency
S compatibility).
"H" (For "L", see Note.)
2
S compatibility).
Master mode
384fs
512fs
256fs
DSP
LRCLK
Output
Output
Master mode
BITCLK
Output
Output
"L"
[AK7714]
‘98/07