PCT1789W DATA SHEET
PRELIMINARY
PCT789T-A PCI CONFIGURATION REGISTERS
!!
Configuration Revision
(08h, R)
BCLS[7:0]
SCLS[7:0]
31
30
29
28
27
26
10
25
9
24
8
23
7
22
6
21
5
20
19
18
2
17
1
16
PGIF[7:0]
REV[7:0]
15
14
13
12
11
4
3
0
Bit Definitions:
Bits
31:24
Name
Description
BCLS[7:0]
Base class (R: default 07h). Indicates that the PCT789T-A modem controller is a
simple communication device class.
23:26
SCLS[7:0]
Subclass (R: default 80h). Indicates the sub-class code for the PCT789T-A
modem controller (as other communication device).
15:8
7:0
PGIF[7:0]
REV[7:0]
Step number (R: default 00h). Indicates the PCT789T-A program interface.
Revision number (R: default 01h). Indicates the PCT789T-A revision number.
Configuration Base Address
(10h, R/W)
BIOA[31:16]
31
30
29
28
27
26
25
9
24
23
22
6
21
5
20
4
19
18
2
17
16
BIOA[15:5]
Reserved
0
MIO
15
14
13
12
11
10
8
7
3
1
0
Bit Definitions:
Bits
31:5
Name
Description
BIOA[31:5]
Configuration base I/O address (R/W: default 00003Exxh). Defines the address
assignment for on-chip registers.
4:2
1
Reserved
Reserved
MIO
Reserved.
Reserved. Read returns zero.
0
I/O space indicators (R: default 1b). Indicates the register maps into the I/O
space. This bit always returns 1 upon reading.
PRELIMINARY
PC-TEL, Inc.
31
1789W0DOCDAT06A-0299
ETC [ ETC ]
