PI7C8154BNA Pericom Semiconductor, PI7C8154BNA Datasheet - Page 84

• Manufacturer Part Number: PI7C8154BNA
• Manufacturer: Pericom Semiconductor

Specifications of PI7C8154BNA

• Operating Temperature (min): 0C
• Operating Temperature Classification: Commercial
• Operating Temperature (max): 85C
• Package Type: BGA
• Rad Hardened: No
• Lead Free Status / Rohs Status: Not Compliant

06-0008
Bit
19
20
21
22
23
24
25
26
27
Function
VGA enable
Reserved
Master Abort
Mode
Secondary
Interface Reset
Fast Back-to-
Back Enable
Primary Master
Timeout
Secondary
Master Timeout
Master Timeout
Status
Discard Timer
P_SERR# enable
Type
R/W
R/O
R/W
R/W
R/W
R/W
R/W
R/WC
R/W
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Description
Controls the bridge’s response to VGA compatible addresses.
0: does not forward VGA compatible memory and I/O addresses from
primary to secondary
1: forward VGA compatible memory and I/O addresses from primary to
secondary regardless of other settings
Reset to 0
Reserved. Returns 0 when read. Reset to 0
Control’s bridge’s behavior responding to master aborts on secondary
interface.
0: does not report master aborts (returns FFFF_FFFFh on reads and
discards data on writes)
1: reports master aborts by signaling target abort if possible or by the
assertion of P_SERR# if enabled
Reset to 0
Controls the assertion of S_RESET# signal pin on the secondary interface
0: does not force the assertion of S_RESET# pin
1: forces the assertion of S_RESET#
Reset to 0
Controls bridge’s ability to generate fast back-to-back transactions on the
secondary interface.
0: does not allow fast back-to-back transactions on the secondary
1: enables fast back-to-back transactions on the secondary
Reset to 0
Determines the maximum number of PCI clock cycles the bridge waits
for an initiator on the primary interface to repeat a delayed transaction
request.
0: Primary discard timer counts 2
1: Primary discard timer counts 2
Reset to 0
Determines the maximum number of PCI clock cycles the bridge waits
for an initiator on the primary interface to repeat a delayed transaction
request.
0: Primary discard timer counts 2
1: Primary discard timer counts 2
Reset to 0
This bit is set to 1 when either the primary master timeout counter or
secondary master timeout counter expires.
Reset to 0
This bit is set to 1 and P_SERR# is asserted when either the primary
discard timer or the secondary discard timer expire.
0: P_SERR# is not asserted on the primary interface as a result of the
expiration of either the Primary Discard Timer or the Secondary Discard
Timer.
1: P_SERR# is asserted on the primary interface as a result of the
expiration of either the Primary Discard Timer or the Secondary Discard
Timer.
Reset to 0
15
10
15
10
PCI clock cycles.
PCI clock cycles.
PCI clock cycles.
PCI clock cycles.
MARCH 2006 REVISION 1.12
ASYNCHRONOUS 2-PORT
PCI-to-PCI BRIDGE
PI7C8154B