參數(shù)資料
型號: ISP1161BM
廠商: NXP SEMICONDUCTORS
元件分類: 總線控制器
英文描述: Full-speed Universal Serial Bus single-chip host and device controller
中文描述: UNIVERSAL SERIAL BUS CONTROLLER, PQFP64
封裝: 7 X 7 MM, 1.40 MM HEIGHT, PLASTIC, MS-026, SOT-414-1, LQFP-64
文件頁數(shù): 63/127頁
文件大?。?/td> 2762K
代理商: ISP1161BM
Philips Semiconductors
ISP1161
Full-speed USB single-chip host and device controller
Product data
Rev. 01 — 3 July 2001
63 of 130
9397 750 08313
Philips Electronics N.V. 2001. All rights reserved.
Code (Hex): 0D —
read
Code (Hex): 8D —
write
13.2.2
HcFmRemaining Register
The HcFmRemaining register is a 14-bit down counter showing the bit time remaining
in the current frame.
Table 29: HcFmInterval Register: bit description
Bit
Symbol
31
FIT
Description
FrameIntervalToggle:
The HCD toggles this bit whenever it loads
a new value to FrameInterval.
FSLargestDataPacket:
Specifies 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 field value is
calculated by the HCD.
reserved
FrameInterval:
Specifies the interval between two consecutive
SOFs in bit times. The nominal value is set to be 11999. The HCD
must store the current value of this field before resetting the HC.
By setting the HostControllerReset bit 0 field of
HcCommandStatus register will cause the HC to reset this field to
its nominal value. HCD may choose to restore the stored value
upon completing the Reset sequence.
30 to 16
FSMPS
[14:0]
15 to 14
13 to 0
-
FI[13:0]
Table 30: HcFmRemaining Register: bit allocation
Bit
31
Symbol
FRT
Reset
0
Access
R
Bit
23
Symbol
Reset
Access
Bit
15
Symbol
reserved
Reset
0
Access
R
Bit
7
Symbol
Reset
0
Access
30
29
28
27
26
25
24
reserved
0
R
19
0
0
0
0
0
0
22
21
20
18
17
16
reserved
00H
R
14
13
12
11
10
9
8
FR[13:8]
0
0
0
0
0
0
0
R
6
5
4
3
2
1
0
FR[7:0]
0
0
0
0
0
0
0
R
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