isp1160 NXP Semiconductors, isp1160 Datasheet - Page 46

• Manufacturer Part Number: isp1160
• Description: Isp1160 Embedded Universal Serial Bus Host Controller
• Manufacturer: NXP Semiconductors

Philips Semiconductors
Table 24:
9397 750 13963
Product data
Bit
Symbol
Reset
Access
Bit
Symbol
Reset
Access
Bit
Symbol
Reset
Access
Bit
Symbol
Reset
Access
Bit
Symbol
Reset
Access
HcFmNumber register: bit allocation
15
31
23
15
R
R
R
R
R
0
7
0
0
0
0
10.2.3 HcFmNumber register (R: 0FH)
reserved
Table 23:
The HcFmNumber register is a 16-bit counter. It provides a timing reference for
events happening in the HC and the HCD. The HCD may use the 16-bit value
specified in this register and generate a 32-bit frame number without requiring
frequent access to the register.
Code (Hex): 0F — read
Bit
31
30 to 14
13 to 0
14
30
22
14
R
R
R
R
R
0
6
0
0
0
0
HcFmRemaining register: bit description
Symbol
FRT
-
FR[13:0]
13
29
21
13
R
R
R
R
R
0
5
0
0
0
0
Rev. 05 — 24 December 2004
Description
FrameRemainingToggle: This bit is loaded from the
FrameIntervalToggle field of the HcFmInterval register whenever
FrameRemaining reaches 0. This bit is used by the HCD for
synchronization between FrameInterval and FrameRemaining.
reserved
FrameRemaining: This counter is decremented at each bit time.
When it reaches zero, it is reset by loading the FrameInterval value
specified in the HcFmInterval register at the next bit time boundary.
When entering the USBOperational state, the HC reloads it with
the content of the FrameInterval part of the HcFmInterval register
and uses the updated value from the next SOF.
12
28
20
12
R
R
R
R
R
0
4
0
0
0
0
reserved
reserved
FN[15:8]
FR[7:0]
11
27
19
11
R
R
R
R
R
0
3
0
0
0
0
FR[13:8]
Embedded USB Host Controller
10
26
18
10
R
R
R
R
R
0
2
0
0
0
0
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
25
17
R
R
R
R
R
9
0
1
0
0
0
9
0
ISP1160
24
16
R
R
R
R
R
8
0
0
0
0
0
8
0
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