Chapter 2 89
Block Diagrams
Mnemonics and Connectors
FP_GREEN2 Flat panel display green 2 signal from the CPU board to the front panel interface board
FP_GREEN3 Flat panel display green 3 (MSB) signal from the CPU board to the front panel interface board
FP_HSYNCL Flat panel display horizontal sync signal from the CPU board to the front panel interface board
FP_INTRL Front panel bus interrupt signal from the front panel interface board to the CPU board
FP_P12 12V power supply output from the CPU board to the motherboard (not used)
FP_P15SBY Front panel +15V standby power supply from the fan control board to the front panel interface
board
FP_P5.2 Front panel +5.2V power supply from the fan control board to the front panel interface board
FP_PS2_KBCLK Front panel PS2 keyboard clock signal from the CPU board to the motherboard (not used)
FP_PS2_KBDATA Front panel PS2 keyboard data signal from the CPU board to the motherboard (not used)
FP_PS2_MSCLK Front panel PS2 mouse clock signal from the CPU board to the motherboard (not used)
FP_PS2_MSDATA Front panel PS2 mouse data signal from the CPU board to the motherboard (not used)
FP_PWR_RST_L Front panel bus power on reset signal from the CPU board to the front panel interface board
FP_RED0 Flat panel display red 0 (LSB) signal from the CPU board to the front panel interface board
FP_RED1 Flat panel display red 1 signal from the CPU board to the front panel interface board
FP_RED2 Flat panel display red 2 signal from the CPU board to the front panel interface board
FP_RED3 Flat panel display red 3 (MSB) signal from the CPU board to the front panel interface board
FP_VSYNCL Flat panel display vertical sync signal from the CPU board to the front panel interface board
FP_W_RL Front panel bus read/write signal from the CPU board to the front panel interface board
GATE_ARM Gate arm signal from the analog IF board to the digital IF board
GATE_TRIG Gate trigger signal from the analog IF board to the digital IF board
GPIB_TRIG GPIB group execute trigger signal from the CPU board to the analog IF board
HPUP Motherboard serial bus power on reset signal from the digital IF board to all vertical boards
LADDR Motherboard serial bus address strobe signal from the digital IF board to all vertical boards
LCNTRL Motherboard serial bus control strobe signal from the digital IF board to all vertical boards
LDATA Motherboard serial bus data strobe signal from the digital IF board to all vertical boards
LINE_OUT_COM Line level audio output common signal from the audio CODEC chip on the CPU board to the front
panel interface board
LINE_OUT_L Line level audio output left channel signal from the audio CODEC chip on the CPU board to the
front panel interface board
LINE_OUT_R Line level audio output right channel signal from the audio CODEC chip on the CPU board to the
front panel interface board
LINE_TRIG Line trigger signal from the power supply to the analog IF board
LO_LOCK LO lock signal from the digital IF board to the daughterboard
LSRQ Motherboard serial bus service request signal from all vertical boards to the digital IF board
Table 2-1 Mnemonic Descriptions
Mnemonic Description
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