參數(shù)資料
型號(hào): PCI6515GHK
廠商: Texas Instruments, Inc.
英文描述: SINGLE SOCKET CARDBUS CONTROLLER WITH DEDICATED SMART CARD SOCKET
中文描述: 單插槽CardBus控制器,專用智能卡插槽
文件頁數(shù): 35/148頁
文件大?。?/td> 760K
代理商: PCI6515GHK
31
3 Feature/Protocol Descriptions
The following sections give an overview of the PCI6515 controller. Figure 31 shows the connections to the PCI6515
controller. The PCI interface includes all address/data and control signals for PCI protocol. The interrupt interface
includes terminals for parallel PCI, parallel ISA, and serialized PCI and ISA signaling.
PCI Bus
PCI6515
EEPROM
(Optional)
Smart
Card
Power Switch
PC Card
Power Switch
Figure 31. PCI6515 System Block Diagram
3.1
Power Supply Sequencing
The PCI6515 controller contains 3.3-V I/O buffers with 5-V tolerance requiring a core power supply and clamp
voltages. The core power supply is always 1.5 V. The clamp voltages can be either 3.3 V or 5 V, depending on the
interface. The following power-up and power-down sequences are recommended.
The power-up sequence is:
1.
Power core 1.5 V.
2.
Apply the I/O voltage.
3.
Apply the clamp voltage.
The power-down sequence is:
1.
Remove the clamp voltage.
2.
Remove the I/O voltage.
3.
Remove power from the core.
NOTE:
If the voltage regulator is enabled, then steps 2 and 3 of the power-up sequence and
steps 1 and 2 of the power-down sequence all occur simultaneously.
3.2
I/O Characteristics
The PCI6515 controller meets the ac specifications of the
PC Card Standard
(release 8.1) and the
PCI Local Bus
Specification.
Figure 32 shows a 3-state bidirectional buffer. Section 8.2,
Recommended Operating Conditions
,
provides the electrical characteristics of the inputs and outputs.
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