參數(shù)資料
型號: ELANSC300-33VC
廠商: ADVANCED MICRO DEVICES INC
元件分類: 微控制器/微處理器
英文描述: Highly Integrated, Low-Power, 32-Bit Microcontroller
中文描述: 32-BIT, 33 MHz, MICROCONTROLLER, PQFP208
封裝: TQFP-208
文件頁數(shù): 38/139頁
文件大小: 1388K
代理商: ELANSC300-33VC
38
élanSC300 Microcontroller Data Sheet
P R E L I M I N A R Y
SLCTIN [PCMCOE]
Printer Selected (Output; Active Low)
Asserting SLCTIN selects the line printer. This pin can
be programmed to become the PCMCIA output enable
signal (PCMCOE). For more information, see
“Parallel
Port” on page 61.
STRB
Strobe (Output; Active Low)
Asserting STRB signals the line printer to latch data
currently on the parallel port.
SERIAL PORT INTERFACE
CTS
Clear To Send (Input; Active Low)
This signal indicates that the external serial device is
ready to accept data.
DCD
Data Carrier Detect (Input; Active Low)
This signal indicates to the internal serial port controller
that the attached serial device has detected a data car-
rier.
DSR
Data Set Ready (Input; Active Low)
This signal is used to indicate that the external serial
device is ready to establish a communication link with
the internal serial port controller.
DTR/CFG1
Data Terminal Ready (Output; Active Low)
This signal indicates to the external serial device that
the internal serial port controller is ready to communi-
cate.
The state of this signal is used to determine the pin
configuration at power-up. For more information, see
“Alternate Pin Functions” on page 68.
RIN
Ring Indicate (Input; Active Low)
This signal is used as a modem control function. A
change in state on this signal by the external serial de-
vice causes a modem status interrupt. This signal can
be used to cause the élanSC300 microcontroller to re-
sume from a suspended state.
RTS/CFG0
Request To Send (Output; Active Low)
This signal indicates to the external serial device that
the internal serial port controller is ready to send data.
The state of this signal is used to determine the pin
configuration at power-up. For more information, see
“Alternate Pin Functions” on page 68.
SIN
Serial Data In (Input; Active High)
This signal is used to receive the serial data from the
external serial device into the internal serial port
controller.
SOUT
Serial Data Out (Output; Active High)
This signal is used to transmit the serial data from the
internal serial port controller to the external serial
device.
PCMCIA INTERFACE
BVD1_A (STSCHG_A), BVD1_B (STSCHG_B)
Battery Voltage Detect (Inputs)
These signals are generated by the memory card as an
indication of the condition of its battery for a memory
card interface. For an I/O card interface, these inputs
are the card’s Status Change Interrupt (active Low).
BVD2_A (SPKR_A), BVD2_B (SPKR_B)
Battery Voltage Detect (Inputs)
These signals are generated by the memory card as an
indication of the condition of its battery for a memory
card interface. For an I/O card interface, these pins be-
come the speaker inputs from the cards.
CA24
Card Address Bit 24 (Output)
This card address bit is controlled by accessing the
élanSC300 microcontroller configuration registers and
should be connected to the card interface signal A24.
This address signal is common to slot A and slot B in-
terfaces.
CA25
Card Address Bit 25 (Output)
This card address bit is controlled by accessing the
élanSC300 microcontroller configuration registers, and
should be connected to the card interface signal A25.
This address signal is common to slot A and slot B in-
terfaces.
CD_A, CD_B
Card Detect (Inputs; Active Low)
The card detect signals indicate that the card is prop-
erly inserted into a socket. These signals should be
driven from an “ANDing” of the CD1 and CD2 pins of a
single socket. Therefore, two external AND gates are
required, one for each slot.
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