CS5535-UDCF AMD (ADVANCED MICRO DEVICES), CS5535-UDCF Datasheet - Page 38

• Manufacturer Part Number: CS5535-UDCF
• Manufacturer: AMD (ADVANCED MICRO DEVICES)

Specifications of CS5535-UDCF

• Operating Temperature (min): 0C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Compliant

3.2.2
38
Signal Name
(Note 1)
PCI_CLK
AD[31:0]
C/BE[3:0]#
PAR
FRAME#
DEVSEL#
PCI Interface Signals
31506B
R6, T9, U11,
U1, T3, U3,
R4, T4, R5,
T5, U5, T6,
U6, R7, T7,
U7, R8, T8,
U13, R14,
T12, U12,
R13, T13,
T14, P15,
R15, T15,
P16, T16,
R16, T17,
U8, R12,
Ball No.
R17
U14
U10
R11
U4
U9
Type
I/O
I/O
I/O
I/O
I/O
I
Description
PCI Clock. 33 or 66 MHz.
PCI Address/Data. AD[31:0] is a physical address during the first
clock of a PCI transaction; it is the data during subsequent clocks.
When the Geode CS5535 companion device is a PCI master, AD[31:0]
are outputs during the address and write data phases, and are inputs
during the read data phase of a transaction.
When the Geode CS5535 companion device is a PCI slave, AD[31:0]
are inputs during the address and write data phases, and are outputs
during the read data phase of a transaction.
PCI Bus Command and Byte Enables. During the address phase of
a PCI transaction, when FRAME# is active, C/BE[3:0]# define the bus
command. During the data phase of a transaction, C/BE[3:0]# are the
data byte enables.
C/BE[3:0]# are outputs when the Geode CS5535 companion device is
a PCI master and inputs when it is a PCI slave.
PCI Parity. PAR is the parity signal driven to maintain even parity
across AD[31:0] and C/BE[3:0]#.
The Geode CS5535 companion device drives PAR one clock after the
address phase and one clock after each completed data phase of write
transactions as a PCI master. It also drives PAR one clock after each
completed data phase of read transactions as a PCI slave.
PCI Cycle Frame. FRAME# is asserted to indicate the start and dura-
tion of a transaction. It is de-asserted on the final data phase.
FRAME# is an input when the Geode CS5535 companion device is a
PCI slave.
Normally connected to a 10k to15k Ω external pull-up. This signal is in
TRI-STATE mode after reset.
PCI Device Select. DEVSEL# is asserted by a PCI slave, to indicate to
a PCI master and subtractive decoder that it is the target of the current
transaction.
As an input, DEVSEL# indicates a PCI slave has responded to the cur-
rent address.
As an output, DEVSEL# is asserted one cycle after the assertion of
FRAME# and remains asserted to the end of a transaction as the
result of a positive decode. DEVSEL# is asserted four cycles after the
assertion of FRAME# if DEVSEL# has not been asserted by another
PCI device when the Geode CS5535 companion device is pro-
grammed to be the subtractive decode agent.
Normally connected to a 10k to15k Ω external pull-up. This signal is in
TRI-STATE mode after reset.
AMD Geode™ CS5535 Companion Device Data Book
Signal Definitions