參數(shù)資料
型號(hào)： ISP1561
廠商： NXP Semiconductors N.V.
英文描述： ISP1561BM
中文描述： ISP1561BM
文件頁數(shù)： 73/102頁
文件大?。?/td> 2875K
代理商： ISP1561
Philips Semiconductors
ISP1561
USB PCI host controller
Product data
Rev. 01 — 06 February 2003
73 of 102
9397 750 10015
Koninklijke Philips Electronics N.V. 2003. All rights reserved.
11.4 Operational registers of Enhanced USB Host Controller
11.4.1
USBCMD register (address: value read from func2 of address 10H + 0CH)
The USB Command (USBCMD) register indicates the command to be executed by
the serial Host Controller. Writing to this register causes a command to be executed.
Table 102
shows the USBCMD register bit allocation.
Table 102: USBCMD register: bit allocation
Bit
31
Symbol
Reset
0
Access
-
Bit
23
Symbol
Reset
0
Access
R/W
Bit
15
Symbol
Reset
0
Access
-
Bit
7
Symbol
LHCR
30
29
28
27
26
25
24
reserved
0
-
0
-
0
-
0
-
0
-
0
-
0
-
22
21
20
19
18
17
16
ITC[7:0]
0
0
0
1
0
0
0
R/W
14
R/W
13
R/W
12
R/W
11
R/W
10
R/W
9
R/W
8
reserved
0
-
6
0
-
5
0
-
4
0
-
3
0
-
2
0
-
1
0
-
0
IAAD
ASE
PSE
FLS[1:0]
HC
RESET
0
R/W
RS
Reset
Access
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Table 103: USBCMD register: bit description
Bit
Symbol
Description
31 to 24
-
reserved
23 to 16
ITC[7:0]
Interrupt Threshold Control
: Default 08H. This field is used by
system software to select the maximum rate at which the Host
Controller will issue interrupts. Valid values are defined below. If
software writes an invalid value to this register, the results are
undefined.
00H —
reserved
01H —
1 microframe
02H —
2 microframes
04H —
4 microframes
08H —
8 microframes (equals 1 ms)
10H —
16 microframes (equals 2 ms)
20H —
32 microframes (equals 4 ms)
40H —
64 microframes (equals 8 ms)
Software modifications to this field while HCH (HCHalted) bit is zero
results in undefined behavior.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ISP1561 HI-SPEED USB H 制造商:NXP Semiconductors 功能描述:
ISP1561BM 制造商:NXP Semiconductors 功能描述:
ISP1561BM,518 功能描述:USB 接口集成電路 USB 2.0 HOST CONTROLLER RoHS:否 制造商:Cypress Semiconductor 產(chǎn)品:USB 2.0 數(shù)據(jù)速率: 接口類型:SPI 工作電源電壓:3.15 V to 3.45 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WLCSP-20
ISP1561BM,551 功能描述:USB 接口集成電路 USB 2.0 HOST CONTROLLER RoHS:否 制造商:Cypress Semiconductor 產(chǎn)品:USB 2.0 數(shù)據(jù)速率: 接口類型:SPI 工作電源電壓:3.15 V to 3.45 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WLCSP-20
ISP1561BM,557 功能描述:USB 接口集成電路 DO NOT USE ORDER -S OR -T PART RoHS:否 制造商:Cypress Semiconductor 產(chǎn)品:USB 2.0 數(shù)據(jù)速率: 接口類型:SPI 工作電源電壓:3.15 V to 3.45 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WLCSP-20
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