參數資料
型號： ISP1161A
廠商： NXP Semiconductors N.V.
英文描述： Full-speed Universal Serial Bus single-chip host and device controller
中文描述： 全速通用串行總線的單芯片主機和設備控制器
文件頁數： 37/134頁
文件大?。?/td> 587K
代理商： ISP1161A
Philips Semiconductors
ISP1161A
Full-speed USB single-chip host and device controller
Product data
Rev. 03 — 23 December 2004
37 of 134
9397 750 13962
Koninklijke Philips Electronics N.V. 2004. All rights reserved.
9.5.1
Time domain behavior
In example 1 (
Figure 30
), the microprocessor is fast enough to read back and
download a scenario before the next interrupt. Note that on the ISO interrupt of
frame N:
The ISO packet for frame N + 1 will be written
The AT packet for frame N + 1 will be written.
In example 2 (
Figure 31
), the microprocessor is still busy transferring the AT data
when the ISO interrupt of the next frame (N + 1) is raised. As a result, there will be no
AT traffic in frame N + 1. The HC does not raise an AT interrupt in frame N + 1. The
AT part is simply postponed until frame N + 2. On the AT N + 2 interrupt, the transfer
mechanism is back to normal operation. This simple mechanism ensures, among
other things, that Control transfers are not dropped systematically from the USB in
case of an overloaded microprocessor.
In example 3 (
Figure 32
), the ISO part is still being written while the Start of Frame
(SOF) of the next frame has occurred. This will result in undefined behavior for the
ISO data on the USB bus in frame N + 1 (depending on if the exact timing data is
corrupted or not). The HC should not raise an AT interrupt in frame N + 1.
Fig 30. HC time domain behavior: example 1.
MGT954
(frame N)
(frame N
+
1)
(frame N
+
2)
(frame N
+
3)
read ISO_A(N
1) write ISO_A(N
+
1)
SOF
read AT(N)
write AT(N
+
1)
AT
interrupt
traffic
on USB
ISO
interrupt
Fig 31. HC time domain behavior: example 2.
MGT955
(frame N)
(frame N
+
1)
(frame N
+
2)
(frame N
+
3)
相關PDF資料
PDF描述
ISP1161ABD Full-speed Universal Serial Bus single-chip host and device controller
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ISP1161A1BD Universal Serial Bus single-chip host and device controller
相關代理商/技術參數
參數描述
ISP1161A1 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Universal Serial Bus single-chip host and device controller
ISP1161A1BD 功能描述:IC USB HOST/DEVICE CTRLR 64-LQFP RoHS:是 類別:集成電路 (IC) >> 接口 - 控制器 系列:- 標準包裝:4,900 系列:- 控制器類型:USB 2.0 控制器 接口:串行 電源電壓:3 V ~ 3.6 V 電流 - 電源:135mA 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:36-VFQFN 裸露焊盤 供應商設備封裝:36-QFN（6x6） 包裝:* 其它名稱:Q6396337A
ISP1161A1BD,118 功能描述:USB 接口集成電路 USB1.1 HOST &DEVICE RoHS:否 制造商:Cypress Semiconductor 產品:USB 2.0 數據速率: 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 安裝風格:SMD/SMT 封裝 / 箱體:WLCSP-20
ISP1161A1BD,151 功能描述:USB 接口集成電路 USB1.1 HOST &DEVICE RoHS:否 制造商:Cypress Semiconductor 產品:USB 2.0 數據速率: 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 安裝風格:SMD/SMT 封裝 / 箱體:WLCSP-20
ISP1161A1BD,157 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 產品:USB 2.0 數據速率: 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 安裝風格:SMD/SMT 封裝 / 箱體:WLCSP-20
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