參數(shù)資料
型號(hào)： ISP1160
廠商： NXP Semiconductors N.V.
英文描述： Embedded Universal Serial Bus Host Controller
中文描述： 嵌入式通用串行總線主控制器
文件頁(yè)數(shù)： 10/88頁(yè)
文件大?。?/td> 2044K
代理商： ISP1160
Philips Semiconductors
ISP1160
Embedded USB Host Controller
Product data
Rev. 04 — 04 July 2003
10 of 88
9397 750 11371
Koninklijke Philips Electronics N.V. 2003. All rights reserved.
8.3 Control registers access by PIO mode
8.3.1
I/O port addressing
Table 3
shows the ISP1160’s I/O port addressing. Complete decoding of the I/O port
address should include the chip select signal CS_N and the address line A0.
However, the direction of access of I/O ports is controlled by the RD_N and
WR_N signals. When RD_N is LOW, the microprocessor reads data from the
ISP1160’s data port. When WR_N is LOW, the microprocessor writes a command to
the command port, or writes data to the data port.
Figure 5
illustrates how an external microprocessor accesses the ISP1160’s internal
control registers.
8.3.2
Register access phases
The ISP1160’s register structure is a command-data register pair structure. A
complete register access cycle comprises a command phase followed by a data
phase. The command (also known as the index of a register) points the ISP1160 to
the next register to be accessed. A command is 8 bits long. On a microprocessor’s
16-bit data bus, a command occupies the lower byte, with the upper byte filled with
zeros.
Figure 6
shows a complete 16-bit register access cycle for the ISP1160. The
microprocessor writes a command code to the command port, and then reads from or
writes the data word to the data port. Take the example of a microprocessor
attempting to read the ISP1160’s ID, which is saved in the HC’s HcChipID register
(index 27H, read only). The 16-bit register access cycle is therefore:
1. The microprocessor writes the command code of 27H (0027H in 16-bit width) to
the HC command port
2. The microprocessor reads the data word of the chip’s ID from the HC data port.
Table 3:
Port
I/O port addressing
CS_N
A0
Access
Data bus width
(bits)
16
16
Description
0
1
0
0
0
1
R/W
W
HC data port
HC command port
When A0
=
0, microprocessor accesses the data port.
When A0
=
1, microprocessor accesses the command port.
Fig 5.
Access to internal control registers.
004aaa075
CMD/DATA
SWITCH
Commands
Control registers
Command register
data port
A0
command port
.
Host bus I/F
1
0
相關(guān)PDF資料
PDF描述
ISP1160BD Embedded Universal Serial Bus Host Controller
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ISP1160BD 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:Embedded Universal Serial Bus Host Controller
ISP1160BD,157 功能描述:USB 接口集成電路 USB 1.1 HOST CONTROLLER RoHS:否 制造商:Cypress Semiconductor 產(chǎn)品:USB 2.0 數(shù)據(jù)速率: 接口類(lèi)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
ISP1160BD/01 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:Embedded Universal Serial Bus Host Controller
ISP1160BD/01,118 功能描述:USB 接口集成電路 USB HOST CTRL RoHS:否 制造商:Cypress Semiconductor 產(chǎn)品:USB 2.0 數(shù)據(jù)速率: 接口類(lèi)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
ISP1160BD/01,151 功能描述:USB 接口集成電路 USB FULL SPEED HOST RoHS:否 制造商:Cypress Semiconductor 產(chǎn)品:USB 2.0 數(shù)據(jù)速率: 接口類(lèi)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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