參數(shù)資料
型號(hào)： PCI1510GVF
廠商： Texas Instruments, Inc.
英文描述： PC CARD CONTROLLERS
中文描述： PC卡控制器
文件頁數(shù)： 39/128頁
文件大?。?/td> 735K
代理商： PCI1510GVF
31
3 Feature/Protocol Descriptions
The following sections give an overview of the PCI1510 controller. Figure 31 shows a simplified block diagram of
the 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. Miscellaneous system interface
terminals include multifunction terminals: SUSPEND, RI_OUT/PME (power-management control signal), and
SPKROUT.
PCI Bus
PCI1510
Activity LED
PCI950
IRQSER
Deserializer
IRQSER
3
Interrupt
Controller
INTA
IRQ215
Multiplexer
23
PC Card
Socket
TPS2211A
Power
Switch
4
External ZV Port
VGA
Controller
Audio
Subsystem
Zoomed Video
19
4
Zoomed Video
NOTE: The PC Card interface is 68 terminals for CardBus and 16-bit PC Cards. In ZV mode, 23 terminals are used for routing the ZV signals
to the VGA controller and audio subsystem.
68
Figure 31. PCI1510 Simplified Block Diagram
3.1
Power Supply Sequencing
The controller contains 3.3-V I/O buffers with 5-V tolerance requiring an I/O power supply and an LDO-VR power
supply for core logic. The core power supply, which is always 2.5 V, can be supplied through the VR_PORT terminal
(when VR_EN is high) or from the integrated LDO-VR. The LDO-VR needs a 3.3-V power supply via the V
CC
terminals. The clamping voltages (V
CCCB
and V
CCP
) 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.
Assert GRST to the device to disable the outputs during power up. Output drivers must be powered up in
the high-impedance state to prevent high current levels through the clamp diodes to the 5-V clamping rails
(V
CCCB
and V
CCP
).
2.
Apply 3.3-V power to V
CC
.
3.
Apply the clamp voltage.
The power-down sequence is:
1.
Assert GRST to the device to disable the outputs during power down. Output drivers must be powered down
in the high-impedance state to prevent high current levels through the clamp diodes to the 5-V clamping
rails (V
CCCB
and V
CCP
).
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