CX82100 Home Network Processor Data Sheet
9.3.8
GPIO Data Output Register 1 for GPIO[15:14; 8:5] (GPIO_DATA_OUT1:
0x003500CC)
The GPIO Data Output Register 1 contains read/write data output bits and corresponding
write-only output mask bits for GPIO[15:14; 8:5].
Writing a 1 to an output mask bit (GPIO_DOMSKx) enables the level corresponding to
associated data output bit (GPIO_DOUTx) onto the associated GPIO pin when the
associated direction bit (GPIO_OEx) is a 1; if the GPIO_OEx is a 0, there is no effect.
Writing a 0 to GPIO_DOMSKx has no effect.
Bit(s)
Type
WO
Default
16’b0
Name
GPIO_DOMSK{X},
15≥X≥0,
Description
GPIO[X] Output Mask, 15≥X≥0.
31:16;
31≥Y≥16,
Y = Bit #
15:0;
15≥Y≥0,
Y = Bit #
Read: Reads a 0.
X = Y-16
Write: GPIO_DOUT[X] (bit Y-16) mask (1 = Enable; 0 = Disable).
GPIO[X] Data Output, 15≥X≥0.
Read: Reads the last value written to this bit.
Write: The output level (1 = high, 0 = low) is driven onto GPIO[X]
pin when mask bit is set (GPIO_DOMSK[X] = 1) and signal
direction is output (GPIO_OE[X] = 1); no effect, otherwise.
RW
16’bx
GPIO_DOUT{X},
15≥X≥0,
X = Y
Bit(s)
31
30
29:25
24
23
22
21
20:16
15
14
13:9
8
7
6
5
Type
WO
WO
Default
1’b0
1’b0
Name
GPIO_DOMSK15
GPIO_DOMSK14
Description
GPIO15 Output Mask.
GPIO14 Output Mask.
Reserved.
GPIO8 Output Mask.
GPIO7 Output Mask.
GPIO6 Output Mask.
GPIO5 Output Mask.
Reserved.
GPIO15 Data Output.
GPIO14 Data Output.
Reserved.
GPIO8 Data Output.
GPIO7 Data Output.
GPIO6 Data Output.
GPIO5 Data Output.
Reserved.
WO
WO
WO
WO
1’b1
1’b0
1’b0
1’b0
GPIO_DOMSK8
GPIO_DOMSK7
GPIO_DOMSK6
GPIO_DOMSK5
RW
RW
1’bx
1’bx
GPIO_DOUT15
GPIO_DOUT14
RW
RW
RW
RW
1’bx
1’bx
1’bx
1’bx
GPIO_DOUT8
GPIO_DOUT7
GPIO_DOUT6
GPIO_DOUT5
4:0
101306C
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