Continued from preceding page.
Pin No.
Pin
LC75397E
Function
• A capacitor with a value of a few tens of µF must be inserted
21
Vref
between Vref and AVSS (VSS) to reduce power supply ripple
in the 0.5 × VDD voltage generator block used for analog
ground.
56
VSS
Ground
26
VDD
Power supply
• Chip enable
25
CE
When this pin goes from high to low, data is written to an
internal latch and the analog switches operate. Data transfers
are enables when this pin is at the high level.
24
DI
• Serial data and clock inputs for chip control
23
CL
• Electronic volume control test pin.
22
TEST
This pin must be held at the VSS potential.
16
17
20
• Unused pins. These pins must either be left open or
27
NC
connected to VSS.
28
29
57
Equivalent circuit
No. 6108-11/26