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21555 PCI-to-PCI Bridge Evaluation Board User’s Guide 25
Signal and Default Information
Table A-4 gives the Mictor connectors pin assignment and DE1B55503 schematic signal names.
S_REQ8 23 24 S_GNT1
S_REQ7 25 26 S_GNT0
S_REQ6 27 28 S_M66ENA
S_REQ5
29 30 S_PNE
S_REQ4 31 32
S_REQ3
33 34 S_CLKI
S_REQ2
35 36 SCLK_O
S_REQ1
37 38
Table A-4. J6, Parallel ROM and Control
Schematic
Signal Name
Mictor
Pin Number
Mictor
Pin Number
Schematic
Signal Name
+5V 1 2 SCL
GND 3 4 SDA
S_CLK0_2
CLK
56
S_CLK0_3
CLKB
PR_AD7 7 8 S_FRAME
PR_AD6 9 10 S_IRDY
PR_AD5 11 12 S_DEVSEL
PR_AD4 13 14 S_TRDY
PR_AD3 15 16 S_STOP
PR_AD2 17 18 S_PAR
PR_AD1 19 20 S_SERR
PR_AD0 21 22 S_PERR
DB_SAC5 23 24 S_REQ64
PR_CS 25 26 S_ACK64
PR_CLK 27 28 S_PAR54
PR_ALE 29 30
PR_RD
31 32 S_RST
PR_WR 33 34 PICMG_RST
35 36 L_STAT
37 38 P_ENUM
Table A-3. J5 CBE, REQ, and GNT
Schematic
Signal Name
Mictor
Pin Number
Mictor
Pin Number
Schematic
Signal Name