ISP1563BM PHILIPS [NXP Semiconductors], ISP1563BM Datasheet - Page 80

• Manufacturer Part Number: ISP1563BM
• Description: Hi-Speed Universal Serial Bus PCI Host Controller
• Manufacturer: PHILIPS [NXP Semiconductors]

Philips Semiconductors
Table 108: FRINDEX - Frame Index register bit allocation
Address: Value read from func2 of address 10h + 2Ch
[1]
9397 750 14224
Product data sheet
Bit
Symbol
Reset
Access
Bit
Symbol
Reset
Access
Bit
Symbol
Reset
Access
Bit
Symbol
Reset
Access
The reserved bits should always be written with the reset value.
11.4.4 FRINDEX register
R/W
R/W
R/W
R/W
31
23
15
0
0
0
7
0
reserved
The Frame Index (FRINDEX) register is used by the Host Controller to index into the
periodic frame list. The register updates every 125 s; once each micro frame. Bits N to 3
are used to select a particular entry in the periodic frame list during periodic schedule
execution. The number of bits used for the index depends on the size of the frame list as
set by the system software in FLS[1:0] (bits 3 to 2) of the USBCMD register. This register
must be written as a DWord. Byte writes produce undefined results. This register cannot
be written unless the Host Controller is in the halted state, as indicated by HCH (bit 12 in
the USBSTS register). A write to this register while RS (bit 0 in the USBCMD register) is
set produces undefined results. Writes to this register also affect the SOF value. The bit
allocation is given in
Table 109: FRINDEX - Frame Index register bit description
Address: Value read from func2 of address 10h + 2Ch
Bit
31 to 14 reserved
[1]
R/W
R/W
R/W
R/W
30
22
14
0
0
0
6
0
Symbol
R/W
R/W
R/W
R/W
29
21
13
0
0
0
5
0
Table
Description
-
Rev. 01 — 14 July 2005
108.
R/W
R/W
R/W
R/W
28
20
12
0
0
0
4
0
FRINDEX[7:0]
reserved
reserved
[1]
[1]
R/W
R/W
R/W
R/W
27
19
11
FRINDEX[13:8]
0
0
0
3
0
R/W
R/W
R/W
R/W
26
18
10
0
0
0
2
0
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
HS USB PCI Host Controller
R/W
R/W
R/W
R/W
25
17
0
0
9
0
1
0
ISP1563
R/W
R/W
R/W
R/W
80 of 107
24
16
0
0
8
0
0
0