参数资料
型号: ISP1160BD/01,118
厂商: ST-ERICSSON
元件分类: 总线控制器
英文描述: UNIVERSAL SERIAL BUS CONTROLLER, PQFP64
封装: 10 X 10 MM, 1.40 MM HEIGHT, PLASTIC, MS-026, SOT-314-2, LQFP-64
文件页数: 40/88页
文件大小: 394K
代理商: ISP1160BD/01,118
Philips Semiconductors
ISP1160
Embedded USB Host Controller
Product data
Rev. 05 — 24 December 2004
45 of 88
9397 750 13963
Koninklijke Philips Electronics N.V. 2004. All rights reserved.
10.2.2
HcFmRemaining register (R: 0EH)
The HcFmRemaining register is a 14-bit down counter showing the bit time remaining
in the current frame.
Code (Hex): 0E — read
Bit
23
22
21
20
19
18
17
16
Symbol
FSMPS[7:0]
Reset
00000000
Access
R/W
Bit
15
14
13
12
11
10
9
8
Symbol
reserved
FI[13:8]
Reset
00101110
Access
R/W
Bit
7
6
5
4
3
2
1
0
Symbol
FI[7:0]
Reset
11011111
Access
R/W
Table 21:
HcFmInterval register: bit description
Bit
Symbol
Description
31
FIT
FrameIntervalToggle: The HCD toggles this bit whenever it loads
a new value to FrameInterval.
30 to 16
FSMPS
[14:0]
FSLargestDataPacket: Species a value which is loaded into the
Largest Data Packet Counter at the beginning of each frame. The
counter value represents the largest amount of data in bits which
can be sent or received by the HC in a single transaction at any
given time without causing a scheduling overrun. The eld value is
calculated by the HCD.
15 to 14
-
reserved
13 to 0
FI[13:0]
FrameInterval: Species the interval between two consecutive
SOFs in bit times. The default value is 11999. The HCD must save
the current value of this eld before resetting the HC. Setting the
HostControllerReset eld of the HcCommandStatus register will
cause the HC to reset this eld to its default value. HCD may
choose to restore the saved value upon completing the reset
sequence.
Table 22:
HcFmRemaining register: bit allocation
Bit
31
30
29
28
27
26
25
24
Symbol
FRT
reserved
Reset
00000000
Access
RRRRRRRR
Bit
23
22
21
20
19
18
17
16
Symbol
reserved
Reset
00000000
Access
RRRRRRRR
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