Philips Semiconductors
ISP1561
USB PCI host controller
Pin description
…continued
Pin
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
Type
O
I/O
I/O
-
I/O
I/O
I/O
-
I/O
I/O
I/O
-
I/O
I
I/O
-
I/O
I/O
I/O
-
I/O
I/O
I/O
-
I/O
I/O
I/O
-
I/O
I/O
I/O
-
I/O
I/O
Description
PCI request; indicates to the arbitrator that the agent wants
to use the bus
bit 31 of multiplexed PCI address and data
bit 30 of multiplexed PCI address and data
supply voltage (3.3 V)
bit 29 of multiplexed PCI address and data
bit 28 of multiplexed PCI address and data
bit 27 of multiplexed PCI address and data
digital ground
bit 26 of multiplexed PCI address and data
bit 25 of multiplexed PCI address and data
bit 24 of multiplexed PCI address and data
supply voltage (3.3 V)
byte 3 of multiplexed PCI bus command and byte enable
PCI initialization device select; used as a chip select during
configuration read and write transactions
bit 23 of multiplexed PCI address and data
digital ground
bit 22 of multiplexed PCI address and data
bit 21 of multiplexed PCI address and data
bit 20 of multiplexed PCI address and data
supply voltage (3.3 V)
bit 19 of multiplexed PCI address and data
bit 18 of multiplexed PCI address and data
bit 17 of multiplexed PCI address and data
digital ground
bit 16 of multiplexed PCI address and data
byte 2 of multiplexed PCI bus command and byte enable
PCI cycle frame; driven by the master to indicate the
beginning and duration of an access
supply voltage (3.3 V)
PCI initiator ready; indicates ability of the initiating agent to
complete the current data phase of a transaction
PCI target ready; indicates ability of the target agent to
complete the current data phase of a transaction
PCI device select; indicates if any device has been
selected on the bus
digital ground
PCI stop; indicates that the current target is requesting the
master to stop the current transaction
PCI CLKRUN signal; push-pull input; three-state output;
5 ns slew rate control; TTL with hysteresis; 5 V tolerant
Table 2:
Symbol
[1]
REQ#
AD[31]
AD[30]
V
DD
AD[29]
AD[28]
AD[27]
DGND
AD[26]
AD[25]
AD[24]
V
DD
C/BE#[3]
IDSEL
AD[23]
DGND
AD[22]
AD[21]
AD[20]
V
DD
AD[19]
AD[18]
AD[17]
DGND
AD[16]
C/BE#[2]
FRAME#
V
DD
IRDY#
TRDY#
DEVSEL#
DGND
STOP#
CLKRUN#
9397 750 10015
© Koninklijke Philips Electronics N.V. 2003. All rights reserved.
Product data
Rev. 01 — 06 February 2003
8 of 102
PHILIPS [ NXP SEMICONDUCTORS ]
