Flash Rom Update Jumper (J28); Alphapc 164Lx Connector Pinouts; Pci Bus Connector Pinouts - DEC AlphaPC 164LX Technical Reference Manual

Flash ROM Update Jumper (J28)

2.6 Flash ROM Update Jumper (J28)
When J28–2/3 are jumpered together (default), the flash ROM is write-enabled.
When J28–1/2 are jumpered together, the flash ROM is write-protected.

2.7 AlphaPC 164LX Connector Pinouts

This section lists the pinouts of all AlphaPC 164LX connectors. See Figure 2–1 for
connector locations.

2.7.1 PCI Bus Connector Pinouts

Table 2–2 shows the PCI bus connector pinouts.
Table 2–2 PCI Bus Connector Pinouts
Pin Signal
32-Bit and 64-Bit PCI Connectors (J16, J17, J23, J26)
A1 TRST#
A5 Vdd
A9 —
A13 Gnd
A17 GNT#
A21 +3V
A25 AD<24>
A29 AD<20>
A33 +3V
A37 STOP#
A41 SBO#
A45 +3V
A49 AD<09>
A53 +3V
A57 AD<02>
A61 Vdd
B3 Gnd
B7 INTB
B11 PRSNT2#
B15 Gnd
B19 Vdd
B23 AD<27>
System Configuration and Connectors
2–6
Pin Signal
A2 +12V
A6 INTA
A10 Vdd
A14 —
A18 Gnd
A22 AD<28>
A26 IDSEL
A30 Gnd
A34 FRAME#
A38 STOP#
A42 Gnd
A46 AD<13>
A50 Not used
A54 AD<06>
A58 AD<00>
A62 Vdd
B4 TDO
B8 INTD
B12 Gnd
B16 CLK
B20 AD<31>
B24 AD<25>
Pin Signal
A3 TMS
A7 INTC
A11 —
A15 RST#
A19 —
A23 AD<26>
A27 +3V
A31 AD<18>
A35 Gnd
A39 +3V
A43 PAR
A47 AD<11>
A51 Not used
A55 AD<04>
A59 Vdd
B1 –12V
B5 Vdd
B9 PRSNT1#
B13 Gnd
B17 Gnd
B21 AD<29>
B25 +3V
22 January 1998 – Subject To Change
(Sheet 1 of 2)
Pin Signal
A4 TDI
A8 Vdd
A12 Gnd
A16 Vdd
A20 AD<30>
A24 Gnd
A28 AD<22>
A32 AD<16>
A36 TRDY#
A40 SDONE
A44 AD<15>
A48 Gnd
A52 C/BE#<0>
A56 Gnd
A60 REQ64#
B2 TCK
B6 Vdd
B10 —
B14 —
B18 REQ#
B22 Gnd
B26 C/BE#<3>