MN66279RSC Datasheet, PDF (47/96 Pages) Panasonic Semiconductor – LSI FOR COMPACT DISC/CD ROM PLAYER

MN662790RSC
(C) General-purpose I/O port controlɹɹɹɹɹɹɹɹɹɹɹɹɹɹɹɹɹɹɹɹɹɹɹɹɹɹɹɹɹɹ
The general-purpose I/O port has four pins, which are GIO0 through GIO3 pins. The default settings of the
GIO0 and GIO3 pins are for the input signals SQCK and RSEL of the LSI respectively.
Command execution makes it possible to make general-purpose I/O port settings of the GIO0 and GIO3 pins.
Unlike the GIO0 and GIO3 pins, the GIO1 and GIO2 pins work as output ports at the time of LSI resetting.
The GIO1 and GIO2 pins have low-level output.
Command execution makes it possible to make general-purpose I/O port settings and CLDCK and FCLK
output signal settings of the LSI.
Note) Do not apply middle-level input if these pins are used as general-purpose input ports.
ɹɹɹɹɹɹɹɹɹɹɹɹɹɹɹɹɹɹɹɹɹɹɹɹɹɹɹɹɹɹɹɹɹɹɹɹɹɹɹTable 7-1-4 (3)


Data (16 bits)ɹɹɹ
Address (8 bits) Function (*: Setting at reset)
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 0 1 0 0 0 0 1 1
X X X X 0 1 1 0 0 1 1 0 X XXX
ˎ Default setting
X X X X X X XXX XXXX XX 0
X X X X X X XXX XXXX XX 1
Port output value setting
0: Output value at "L"
1: Output value at "H"
(Enabled when the port is set as
output port.)
D2 D1
X X X X X X X X X X X X X ̌̌X
X X X X X X X X X X X X X ̌̍X
X X X X X X X X X X X X X ̍̌X
X X X X X X X X X X X X X ̍̍X
Port designation address
GIO0 designation
GIO1 designation
GIO2 designation
GIO3 designation
D3
X X X X X X XX X X XX̌X XX
X X X X X X XX X X XX̍X XX
Port output value setting enabled or
disabled
Port output value setting disabled
Port output value setting enabled
D7 D6 D5 D4
X X X X X X X X ^{GIO3 GIO2 GIO1 GIO0} X X X X
Port I/O mode setting
0: Input port
1: Output port
D11 D10 D9 D8
X X X X ^{GIO3 GIO2 GIO1 GIO0} X X X X X X X X
Function selection mode setting
0: LSI I/O mode
1: General-purpose I/O port mode
D15
0 X X X X X XXX XXXX XXX
1 X X X X X XXX XXXX XXX
Mode setting enabled or disabled
0: I/O mode setting and function
selection mode setting disabled
1: I/O mode setting and function
selection mode setting enabled
D14
X 0 X X X X X X X X X X XX XX
X ₁ X X X X X X X X X X XX XX
RF signal polarity control
ɹ RF polarity bright level "L"
ˎ RF polarity bright level "H"
If D15 disables mode setting, the command is disabled except the port output signal level setting data.
Therefore, changes in the output signal level are made with ease.
After all settings, the input signals (or output signals if the port is so set) of the GIO3 through GIO0 pins are
output from the STAT pin in series. The signals are output in synchronization with the falling edge of the
MCLK as shown in the following timing chart.
SDD00025AEM
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