Acer Extensa 610 Service Guide

2-64Service GuideTable 2-13PCI1131 Pin Descriptions (Continued)TERMINALNAME      NO.I/OTYPEFUNCTIONPCI Address and Data TerminalsC/BE3 180
C/BE2 192
C/BE1 203
C/BE0 5I/O8us commands and byte enables. These are muitiplexed on the same
PCI terminals. During the address phase, C/BE-0 define the bus
command. During the data phase, C /ENEW-O are used as byte
enables. The byte enables determine which byte lanes carry
meaningful data. C/BE0 applies to byte 0 (AD7-0), C/BE1 applies to
byte 1 (AD15-8), C/BE2...

Major Chips Description2-65Table 2-13PCI1131 Pin Descriptions (Continued)TERMINALNAME     NO.I/OTYPEFUNCTIONPCI Interface Control TerminalsTRDY  196I/OTarget ready. Indicates the PCI 1131 ability to complete the current
data phase of the transaction. TRDY is used in conjunction with IRDY.
A data phase is completed on any clock where both TRDY I/O are
sampled asserted. During a read, TRDY indicates that valid data is
present on AD31-0. During a write,  TRDY indicates the PCI1131 is
prepared to accept...

2-66Service GuideTable 2-13PCI1131 Pin Descriptions (Continued)TERMINALName  SlotSlotI/OTYPEFUNCTION          A+      B¹ ¹1 6-bit PC Card Address and Data (Slots A and B)D1593       27
D1491       25
D1389       23
D1287       20
D1184       18
D10147     81
D9145     79
D8142     77
D690       24
D588       21
D485       19
D383       17
D2146     80
D1144     78
D0141     76I/OPC Card Data.  16-bit PC Card data lines.  D15 is the most significant
bit.1 6-bit PC Card Interface Control Signals (Slots A...

Major Chips Description2-67Table 2-13PCI1131 Pin Descriptions (Continued)TERMINALName  SlotSlotI/OTYPEFUNCTION          A+      B¹ ¹1 6-bit PC Card Interface Control Signals (Slots A and B)BVD2137     
71
(SPKR)IBattery Voltage Detect 2. Generated by 16-bit memory PC Cards that
include batteries. BVD2 is used with BVD 1 as an indication of the
condition of the batteries on a memory PC Card. Both BVD 1 and BVD2
are high when the battery is good. When BVD2 is low and BVD1 is
high, the battery is weak and...

2-68Service GuideTable 2-13PCI1131 Pin Descriptions (Continued)TERMINALName  SlotSlotI/OTYPEFUNCTION          A+      B¹ ¹1 6-bit PC Card Address and Data (Slots A and B)IORD99       33OI/O Read. LORD is asserted by the PCI1131 to enable 16-bit l/O PC
Card data output during host I/O read cycles.
(DMA Write) This pin is used as the DMA write strobe during DMA
operations from a 16-bit PC Card which supports DMA. The PCI 1131
asserts this signal during DMA transfers from the PC Card to host
memory.IOWR101...

Major Chips Description2-69Table 2-13PCI1131 Pin Descriptions (Continued)TERMINALName  SlotSlotI/OTYPEFUNCTION          A+      B¹ ¹1 6-bit PC Card Interface Control Signals (Slots A and B)WP139      73
(IOIS16)IWrite Protect. This signal applies to 16-bit Memory PC Cards. WP
reflects the status of the write-protect switch on 16-bitmemory PC Cards.
For 16-bit l/O cards, WP is used for the 16-bit port ( IOIS16) function.
The status of the signal can be read from the interface status register.
(I/O is 16...

2-70Service GuideTable 2-13PCI1131 Pin Descriptions (Continued)TERMINALName  SlotSlotI/OTYPEFUNCTION          A+      B¹ ¹CardBus PC Card Address and Data Signals (Slots A and B)CC/BE0 94      28
CC/BE1104     39
CC/BE2117     52
CC/BE3130     63I/OCardBus PC Card Command and Byte Enables. These signals are
multiplexed on the same pin. During the address phase of the
transaction, CC/BE3 0 define the bus command. During the data I/O
phase transaction, CC/BE3-0 are used as Byte Enables. Byte Enables
are...

Major Chips Description2-71Table 2-13PCI1131 Pin Descriptions (Continued)TERMINALName  SlotSlotI/OTYPEFUNCTION          A+      B¹ ¹CardBus PC Card Interface Control Signals (Slots A and B)CBLOCK   107   42I/OCardBus Lock. This is an optional signal used to lock a particular
address, ensuring a bus initiator exclusive access. NOTE: This signal is
not supported on the PCI 1131.CDEVSEL 111   47I/OCardBus Device Select. When actively driven, this signal indicates that
the PCI 1131 has decoded its address as...

2-72Service GuideTable 2-13PCI1131 Pin Descriptions (Continued)TERMINALName  SlotSlotI/OTYPEFUNCTION          A+      B¹ ¹CardBus PC Card Interface Control Signals (Slots A and B)CREQ127      61ICardBus Request. This signal ir1dicates to the arbiter that the CardBus
PC Card desires use the CardBus bus.CGNT110      46OCardBus Grant. This signal is driven by the PCI 1131 to grant a CardBus
PC Card access to the CardBus bus after the current data transaction
has completedCPERR108      43I/OCardBus Parity...

Major Chips Description2-73Table 2-13PCI1131 Pin Descriptions (Continued)     TERMINALNAME         NOI /O  TYPEFUNCTIONInterrupt TerminalsIRQ3/INTA        154
IRQ4/INTB        155OInterrupt Request 3 and Interrupt Request 4. These terminals
may be connected to either PCI or ISA interrupts. These
terminals are software configurable as IRQ3 or T1VTA, and
as IRQ4 or T1~. When configured for IRQ3 and IRQ4, these
terminals should be connected to the ISA IRQ programmable
interrupt controller. When these pins...