參數(shù)資料
型號(hào): 935270538118
廠商: NXP SEMICONDUCTORS
元件分類: 總線控制器
英文描述: UNIVERSAL SERIAL BUS CONTROLLER, PQFP64
封裝: 10 X 10 MM, 1.40 MM HEIGHT, PLASTIC, MS-026, SOT-314-2, LQFP-64
文件頁(yè)數(shù): 40/93頁(yè)
文件大?。?/td> 2118K
代理商: 935270538118
Philips Semiconductors
ISP1160
Embedded USB Host Controller
Product data
Rev. 03 — 27 February 2003
45 of 89
9397 750 10765
Koninklijke Philips Electronics N.V. 2003. All rights reserved.
Code (Hex): 05 — read
Code (Hex): 85 — write
10.2 HC frame counter registers
10.2.1
HcFmInterval register (0DH—Read, 8DH—Write)
The HcFmInterval register contains a 14-bit value which indicates the bit time interval
in a frame (that is, between two consecutive SOFs), and a 15-bit value indicating the
full-speed maximum packet size that the HC may transmit or receive without causing
a scheduling overrun. The HCD may carry out minor adjustments on the
FrameInterval by writing a new value over the present one at each SOF. This provides
the programmability necessary for the HC to synchronize with an external clocking
resource and to adjust any unknown local clock offset.
5
FNO
0 — ignore
1 — disable interrupt generation due to frame Number Overow
4UE
0 — ignore
1 — disable interrupt generation due to Unrecoverable Error
3RD
0 — ignore
1 — disable interrupt generation due to Resume Detect
2SF
0 — ignore
1 — disable interrupt generation due to Start of frame
1
-
reserved
0SO
0 — ignore
1 — disable interrupt generation due to Scheduling Overrun
Table 19:
HcInterruptDisable register: bit description…continued
Bit
Symbol
Description
Table 20:
HcFmInterval register: bit allocation
Bit
31
30
29
28
27
26
25
24
Symbol
FIT
FSMPS[14:8]
Reset
00000000
Access
R/W
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
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