ml7029 Oki Semiconductor, ml7029 Datasheet - Page 7

• Manufacturer Part Number: ml7029
• Description: Multifunction Adpcm Codec
• Manufacturer: Oki Semiconductor

DEN, EXCK, DIN, DOUT
Serial control ports for MCU interface.
Reading and writing data are performed by an external MCU through these pins. The 8-byte cotrol registers
(CR0 to 7) are provided on the device.
DEN is the “Enable” control signal input, EXCK is the data shift clock input, DIN is the address and data input,
and DOUT is the data output.
Figures 2-1 and 2-2 show the input/output timing diagram. During power-down, the DOUT output is in a high
impedance state.
OKI Semiconductor
EXCK
EXCK
EXCK
EXCK
DEN
DEN
DEN
DEN
DOUT
DOUT
DIN
DOUT
DIN
DOUT
DIN
DIN
W
High Impedance
R
Figure 2-1 MCU Interface Input/Output Timing (DIN = 12 bits)
High Impedance
A2
A2
Figure 2-2 MCU Interface Input/Output Timing (DIN = 16 bits)
A1
A1
W
R
A0
A0
A2
A2
(b) Data Read Timing Diagram
B7 B6
B7 B6
(a) Data Write Timing Diagram
(a) Data Write Timing Diagram
(b) Data Read Timing Diagram
A1
A1
A0
A0
High Impedance
High Impedance
B5
B5
B7 B6
B7 B6
B4
B4
B3
B3
B5
B5
B2
B2
B4
B4
B1
B1
B3
B3
B0
B0
B2
B2
B1
B1
FEDL7029-03
B0
B0
ML7029
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