AT&T 3B2/300 Technical Reference Manual page 620

Appendix: CONNECTOR AND CABLING I N F O R M A T I O N - - - - - - - - - - - - - - - -
464-PIN BACKPLANE CONNECTOR, J02 (Contd)
PIN
DESCRIPTION FUNCTION
407* UBUS ADDRESS BIT 20 (CA20[1]) NOT USED INPUT/OUTPUT NC
408* UBUS ADDRESS BIT 22 (CA22[1])
NOT USED
INPUT /OUTPUT
NC
409*
UBUS ADDRESS BIT 24 (CA24[1])
NOT USED INPUT /OUTPUT NC
410* UBUS ADDRESS BIT 23 (CA23[1])
NOT USED
INPUT /OUTPUT
NC
411 +5V (VCC)
POWER
412* UBUS ADDRESS BIT 25 (CA25[1])
NOT USED
INPUT /OUTPUT
NC
413* UBUS ADDRESS BIT 27 (CA27[1])
NOT USED INPUT /OUTPUT NC
414* GROUND (GRD)
PBUS INHIBIT(UINHIB[OJ) GROUND OUTPUT
415* UBUS ADDRESS BIT 26 (CA26[1])
NOT USED INPUT/OUTPUT NC
416* UBUS ADDRESS BIT 28 (CA28[1])
NOT USED INPUT/OUTPUT NC
417* UBUS ADDRESS BIT 31 (CA31[1]) NOT USED INPUT /OUTPUT
NC
418* UBUS ADDRESS BIT 30 (CA30[1])
NOT USED INPUT /OUTPUT NC
419* UBUS ADDRESS BIT 29 (CA29[1]) NOT USED INPUT /OUTPUT
NC
420* CLOCK 23 (CLK23[1])
NOT USED OUTPUT NC
421
HOLD REMOTE POWER ON (PWRON[l]) OUTPUT
422 REMOTE POWER DOWN REQUEST
INPUT
(PDWNRQ[O])
423 GROUND (GRD) GROUND
424* CLOCK 34 (CLK34[1])
NOT USED OUTPUT NC
425*
UBUS GRANTED (BUSGT[O])
CPU LATCH ADDRESS (CPULTCH[1}) OUTPUT OUTPUT
426
SANITY TIMER TIMEOUT (SANTO[O]) INPUT/OUTPUT
427 OPERATIONAL INTERRUPT LEVEL 15
INPUT
(OPINT15[0])
428* VIRTUAL CACHE HIT (VCHIT[O])
SLOT
3
VIRTUAL ADDRESS STROBE
INPUT
INPUT /OUTPUT
(C3VAS[OJ)
429* UBUS EXECUTION MODE 1 (XMDl[l]) NOT USED OUTPUT NC
430 +5V (VCC)
POWER
431*
UBUS BUS REQUEST (BUSRQ[O])
SLOT 2 VIRTUAL ADDRESS STROBE
INPUT
INPUT
(C2VAS[OJ)
432* UBUS COPROCESSOR DONE (DONE[O])
SLOT
1
VIRTUAL ADDRESS STROBE
INPUT
INPUT
(C1VAS[O})
433• UBUS VIRTUAL ADDRESS (BY CPU)
PBUS INTERLOCK (UINTLK[O}) OUTPUT INPUT
(VAD[O])
434• UBUS ACCESS ST A TUS BIT 3 (SAS3[1])
PBUS CARD SELECT SLOT
3
(UPCS3[0} OUTPUT OUTPUT
435
GROUND (GRD) GROUND
436* UBUS ACCESS ST A TUS BIT 2 (SAS2[1])
PBUS CARD SELECT SLOT 2 (UPCS2[0}) OUTPUT OUTPUT
437* UBUS DAT A ACKNOWLEDGE (OT ACK[O])
PBUS SLOT
3
MEMORY REQUEST INPUT INPUT
(CPU3MEM[OJ
438 GROUND (GRD)
GROUND
439*
UBUS ABORT ACTIVATED (ABORT[O]) NOT USED OUTPUT NC
*
CM518C System Board signal description shown in italics.
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