Acer SPECTRUM Series Service Manual page 38

119 OSD-Data1
120 OSD-Data2
121 OSD-Data3
122 OSD-FSW
123 MFB11
124 MFB10
102 MFB9
104 MFB8
105 MFB7
106 MFB6
107 MFB5
109 MFB4
110 MFB3
111 FMB2
112 MFB1
113 MFB0
Data input 1 from an external OSD controller chip.
I
Data input 2 from an external OSD controller chip.
I
Data input 3 from an external OSD controller chip.
I
External OSD window display enable. Displays data from external
I
OSD controller when high.
Multi-Function Bus 11. One of twelve multi-function signals MFB[11:0].
I/O
Multi-Function Bus 10. One of twelve multi-function signals MFB[11:0].
I/O
Multi-Function Bus 9. One of twelve multi-function signals MFB[11:0].
I/O
Also used as HDATA3 in a 4-bit host interface configuration.
Multi-Function Bus 8. One of twelve multi-function signals MFB[11:0].
I/O
Also used as HDATA2 in a 4-bit host interface configuration.
Multi-Function Bus 7. One of twelve multi-function signals MFB[11:0].
I/O
Also used as HDATA1 in a 4-bit host interface configuration.
Multi-Function Bus 6. One of twelve multi-function signals MFB[11:0].
I/O
Internally pulled up. When externally pulled down (sampled at reset )
the host interface is configured for 4 bits wide. In this configuration,
MFB9:7 are used as HDATA 3:1.
Multi-Function Bus 5 One of twelve multi-function signals MFB[11:0].
I/O
Internally pulled up. When externally pulled down (sampled at reset )
the chip uses an external crystal resonator across pins 141 and 142,
instead of an oscillator.
Multi-Function Bus 4. One of twelve multi-function signals MFB[11:0].
I/O
Multi-Function Bus 3. One of twelve multi-function signals MFB[11:0].
I/O
Multi-Function Bus 2. One of twelve multi-function signals MFB[11:0].
I/O
Multi-Function Bus 1. One of twelve multi-function signals MFB[11:0].
I/O
Multi-Function Bus 0. One of twelve multi-function signals MFB[11:0].
I/O
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