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| 型號： | PCI7610LQFP |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | PC Card, UltraMedia, and Integrated 1394a-2000 OHCI Two-Port PHY/Link-Layer Controller |
| 中文描述： | PC卡，UltraMedia和集成1394 - 2000 OHCI的雙端口的PHY /鏈路層控制器 |
| 文件頁數(shù)： | 36/240頁 |
| 文件大?。?/td> | 1298K |
| 代理商： | PCI7610LQFP |
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216
Table 212. 16-Bit PC Card Interface Control Terminals
TERMINAL
NAME
NUMBER
PDV
I/O
DESCRIPTION
GHK
BVD1
(STSCHG/RI)
185
A09
I
Battery voltage detect 1. BVD1 is generated by 16-bit memory PC Cards that include batteries. BVD1
is used with BVD2 as an indication of the condition of the batteries on a memory PC Card. Both BVD1
and BVD2 are high when the battery is good. When BVD2 is low and BVD1 is high, the battery is weak
and must be replaced. When BVD1 is low, the battery is no longer serviceable and the data in the
memory PC Card is lost. See Section 5.6,
ExCA Card Status-Change Interrupt Configuration
Register
, for enable bits. See Section 5.5,
ExCA Card Status-Change Register
, and Section 5.2,
ExCA Interface Status Register
, for the status bits for this signal.
Status change. STSCHG is used to alert the system to a change in the READY, write protect, or
battery voltage dead condition of a 16-bit I/O PC Card.
Ring indicate. RI is used by 16-bit modem cards to indicate a ring detection.
BVD2
(SPKR)
184
F10
I
Battery voltage detect 2. BVD2 is generated by 16-bit memory PC Cards that include batteries. BVD2
is used with BVD1 as an indication of the condition of the batteries on a memory PC Card. Both BVD1
and BVD2 are high when the battery is good. When BVD2 is low and BVD1 is high, the battery is weak
and must be replaced. When BVD1 is low, the battery is no longer serviceable and the data in the
memory PC Card is lost. See Section 5.6,
ExCA Card Status-Change Interrupt Configuration
Register
, for enable bits. See Section 5.5,
ExCA Card Status-Change Register
, and Section 5.2,
ExCA Interface Status Register
, for the status bits for this signal.
Speaker. SPKR is an optional binary audio signal available only when the card and socket have been
configured for the 16-bit I/O interface. The audio signals from cards A and B are combined by the
PCI7610 controller and are output on SPKROUT.
CD1
CD2
125
187
L17
C09
I
Card detect 1 and card detect 2. CD1 and CD2 are internally connected to ground on the PC Card.
When a PC Card is inserted into a socket, CD1 and CD2 are pulled low. For signal status, see
Section 5.2,
ExCA Interface Status Register
.
CE1
CE2
137
140
J15
H17
O
Card enable 1 and card enable 2. CE1 and CE2 enable even- and odd-numbered address bytes. CE1
enables even-numbered address bytes, and CE2 enables odd-numbered address bytes.
INPACK
173
B12
I
Input acknowledge. INPACK is asserted by the PC Card when it can respond to an I/O read cycle
at the current address.
IORD
144
G18
O
I/O read. IORD is asserted by the PCI7610 controller to enable 16-bit I/O PC Card data output during
host I/O read cycles.
IOWR
145
G17
O
I/O write.
IOWR is driven low by the PCI7610 controller to strobe write data into 16-bit I/O PC Cards
during host I/O write cycles.
OE
141
H14
O
Output enable. OE is driven low by the PCI7610 controller to enable 16-bit memory PC Card data
output during host memory read cycles.
READY
(IREQ)
182
C10
I
Ready. The ready function is provided by READY when the 16-bit PC Card and the host socket are
configured for the memory-only interface. READY is driven low by 16-bit memory PC Cards to
indicate that the memory card circuits are busy processing a previous write command. READY is
driven high when the 16-bit memory PC Card is ready to accept a new data transfer command.
Interrupt request. IREQ is asserted by a 16-bit I/O PC Card to indicate to the host that a device on
the 16-bit I/O PC Card requires service by the host software. IREQ is high (deasserted) when no
interrupt is requested.
REG
176
B11
O
Attribute memory select. REG remains high for all common memory accesses. When REG is
asserted, access is limited to attribute memory (OE or WE active) and to the I/O space (IORD or
IOWR active). Attribute memory is a separately accessed section of card memory and is generally
used to record card capacity and other configuration and attribute information.
RESET
169
B13
O
PC Card reset. RESET forces a hard reset to a 16-bit PC Card.
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