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參數資料
| 型號： | 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： | 41/148頁 |
| 文件大?。?/td> | 760K |
| 代理商： | PCI6515GHK |
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3.5.5
Internal Ring Oscillator
The internal ring oscillator provides an internal clock source for the PCI6515 controller so that neither the PCI clock
nor an external clock is required in order for the PCI6515 controller to power down a socket or interrogate a PC Card.
This internal oscillator, operating nominally at 16 kHz, is always enabled.
3.5.6
Integrated Pullup Resistors for PC Card Interface
The
PC Card Standard
requires pullup resistors on various terminals to support both CardBus and 16-bit PC Card
configurations. The PCI6515 controller has integrated all of these pullup resistors and requires no additional external
components. The I/O buffer on the BVD1(STSCHG)/CSTSCHG terminal has the capability to switch to an internal
pullup resistor when a 16-bit PC Card is inserted, or switch to an internal pulldown resistor when a CardBus card is
inserted. This prevents inadvertent CSTSCHG events. The pullup resistor requirements for the Smart Card interface
are either included in the Smart Card or are part of the existing PCMCIA architecture. The PCI6515 controller does
not require any additional components for Smart Card support.
3.5.7
SPKROUT and CAUDPWM Usage
The SPKROUT terminal carries the digital audio signal from the PC Card to the system. When a 16-bit PC Card is
configured for I/O mode, the BVD2 terminal becomes the SPKR input terminal from the card. This terminal, in
CardBus applications, is referred to as CAUDIO. SPKR passes a TTL-level binary audio signal to the PCI6515
controller. The CardBus CAUDIO signal also can pass a single-amplitude binary waveform as well as a PWM signal.
The binary audio signal from the PC Card socket is enabled by bit 1 (SPKROUTEN) of the card control register (PCI
offset 91h, see Section 4.37).
Older controllers support CAUDIO in binary or PWM mode, but use the same output terminal (SPKROUT). Some
audio chips may not support both modes on one terminal and may have a separate terminal for binary and PWM.
The PCI6515 implementation includes a signal for PWM, CAUDPWM, which can be routed to an MFUNC terminal.
Bit 2 (AUD2MUX), located in the card control register, is programmed to route a CardBus CAUDIO PWM terminal
to CAUDPWM. See Section 4.35,
Multifunction Routing Register
, for details on configuring the MFUNC terminals.
Figure 34 illustrates the SPKROUT connection.
Speaker
Subsystem
BINARY_SPKR
System
Core Logic
PCI6515
CAUDPWM
SPKROUT
PWM_SPKR
Figure 34. SPKROUT Connection to Speaker Driver
3.5.8
LED Socket Activity Indicators
The socket activity LED is provided to indicate when a PC Card is being accessed. The LEDA1 signal can be routed
to the multifunction terminals. When configured for LED output, this terminal outputs an active high signal to indicate
socket activity. LEDA1 indicates socket A (card A) activity. The LED_SKT output also indicates socket activity for
either socket A or for compatability with two socket controllers. See Section 4.35,
Multifunction Routing Status
Register
,
for details on configuring the multifunction terminals.
The active-high LED signal is driven for 64 ms. When the LED is not being driven high, it is driven to a low state. Either
of the two circuits shown in Figure 35 can be implemented to provide LED signaling, and the board designer must
implement the circuit that best fits the application.
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相關代理商/技術參數 |
參數描述 |
|---|---|
| PCI6515ZHK | 制造商:TI 制造商全稱:Texas Instruments 功能描述:SINGLE SOCKET CARDBUS CONTROLLER WITH DEDICATED SMART CARD SOCKET |
| PCI6520 | 制造商:PLX 制造商全稱:PLX 功能描述:Transparent FastLane⑩ PCI-X -to- PCI-X Bridge |
| PCI6520-CB13BI | 功能描述:外圍驅動器與原件 - PCI PCIX to PCIX BRIDGE 64bit 133MHz RoHS:否 制造商:PLX Technology 工作電源電壓: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray |
| PCI6520-CB13BI G | 功能描述:外圍驅動器與原件 - PCI PCIX to PCIX Bridge 64Bit 133MHz RoHS:否 制造商:PLX Technology 工作電源電壓: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray |
| PCI6520-XX13BC | 制造商:PLX 制造商全稱:PLX 功能描述:Transparent FastLane⑩ PCI-X -to- PCI-X Bridge |
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