¡ Semiconductor
MSM7583
DEN, EXCK, DIN, DOUT
Serial control ports for the microprocessor interface.
The MSM7583 contains a 6-byte control register. An external CPU uses these pins to read data
, , fromandwritedatatothecontrolregister. DENisthe"Enable"signalinputpin. EXCKisa
data shift clock pulse input pin. DIN is an address and data input pin. DOUT is a data output
pin. Figure 5 shows an input/output timing diagram.
DEN
EXCK
DIN
DOUT
W A2 A1 A0 B7 B6 B5 B4 B3 B2 B1 B0
High Impedance
(a) Data Write Timing Diagram
DEN
EXCK
DIN
R A2 A1 A0
DOUT HighImpedance
B7 B6 B5 B4 B3 B2 B1 B0
(b) Data Read Timing Diagram
Figure 5 MCU Interface Input/Output Timing Diagram
10/23