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Circuit Description
NEC-FA150ATUA
9.4.2 Functions
Major function of I305 are as follows:
(1) Expansion of the display screen.
(2) Timing control for various signal types.
(3) Power-supply sequence (LCD panel).
9.5 I
2
C bus control
9.5.1 Related ports of I306
Port
Pin No.
I/O
Signal name Function
P0.6
80
I
IICCLK
IIC bus clock
P0.5
81
I/O
IICDATA
IIC bus data
9.5.2 I
2
C-controlled functions
The following functional controls are effected by I
2
C.
(1) Control of EEPROM I308f for parameter setting.
(2) Control of audio preamplifier.
