upd72862 Renesas Electronics Corporation., upd72862 Datasheet - Page 8

• Manufacturer Part Number: upd72862
• Description: Ieee1394 Ohci Host Controller
• Manufacturer: Renesas Electronics Corporation.

1. PIN FUNCTIONS
1.1 PCI Bus Interface Signals: (52 pins)
8
PAR
AD0-AD31
CBE0-CBE3
FRAME
TRDY
IRDY
REQ
GNT
IDSEL
DEVSEL
STOP
Name
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
O
I
I
I
18
2-5, 7, 8,
21-24,
27-30,
33-36,
39-42,
86-91,
93, 94,
98, 99
9, 20,
32, 95
10
13
12
84
83
96
14
15
Pin No.
PCI/Cardbus
PCI/Cardbus
PCI/Cardbus
PCI/Cardbus
PCI/Cardbus
PCI/Cardbus
PCI/Cardbus
PCI/Cardbus
I
OL
-
-
-
Volts(V)
Data Sheet S14265EJ2V0DS00
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Parity is even parity across AD0-AD31 and CBE0-CBE3. It is an
input when AD0-AD31 is an input; it is an output when AD0-AD31 is
an output.
PCI Multiplexed Address and Data
Command/Byte Enables are multiplexed Bus Commands & Byte
enables.
Cycle Frame is asserted by the initiator to indicate the cycle
beginning and is kept asserted during the burst cycle.
If Cardbus mode (CARD_ON = 1), this pin is should be pulled up to
V
Target Ready indicates that the current data phase of the
transaction is ready to be completed.
Initiator Ready indicates that the current bus master is ready to
complete the current data phase. During a write, its assertion
indicates that the initiator is driving valid data onto the data bus.
During a read, its assertion indicates that the initiator is ready to
accept data from the currently-addressed target.
Bus_master Request indicates to the bus arbiter that this device
wants to become a bus master.
Bus_master Grant indicates to this device that access to the bus
has been granted.
ID Select when actively driven, indicates that the IUHC is chip-
selected for configuration read/write transaction during the phase of
device initialization.
If Cardbus mode (CARD_ON = 1), this pin is should be pulled up to
V
Device Select when actively driven, indicates that the driving device
has decoded its address as the target of the current access.
PCI Stop when actively driven, indicates that the target is
requesting the current bus master to stop the transaction.
DD
DD
.
.
Function
PD72862
(1/2)