STPCI0180BTC3 STMICROELECTRONICS [STMicroelectronics], STPCI0180BTC3 Datasheet - Page 25

• Manufacturer Part Number: STPCI0180BTC3
• Description: PC Compatible Embedded Microprocessor
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

3.2.6 IPC (Combined with Serial Interface)
DACK_ENC[2:0] DMA Acknowledge. These are
the ISA bus DMA acknowledge signals. They are
encoded by the STPC Industrial before output and
should be decoded externally using ISACLK and
ISACLKX2 as the control strobes.
DREQ_MUX[1:0] ISA Bus Multiplexed DMA Re-
quest. These are the ISA bus DMA request sig-
nals. They are to be encoded before connection to
the STPC Industrial using ISACLK and ISACLKX2
as the input selection strobes.
TC ISA Terminal Count. This is the terminal count
output of the DMA controller and is connected to
the TC line of the ISA bus. It is asserted during the
last DMA transfer, when the Byte count expires.
3.2.7 KEYBOARD/MOUSE INTERFACE
KBCLK, Keyboard Clock line. Keyboard data is
latched by the controller on each negative clock
edge produced on this pin. The keyboard can be
disabled by pulling this pin low by software control.
KBDATA, Keyboard Data Line. 11-bits of data are
shifted serially through this line when data is being
transferred. Data is synchronised to KBCLK.
MCLK, Mouse Clock line. Mouse data is latched
by the controller on each negative clock edge pro-
duced on this pin. The mouse can be disabled by
pulling this pin low by software control.
MDATA, Mouse Data Line. 11-bits of data are
shifted serially through this line when data is being
transferred. Data is synchronised to MCLK.
3.2.8 SERIAL INTERFACE
SIN1, SIN2 Input Serial input. Data is clocked in
using RCLK/16.
SOUT1, SOUT2 Serial Output. Data is clocked out
using TCLK/16 (TCLK=BAUD#).
DCD1#, DCD2# Input Data carrier detect.
(Serial 1 combined with TFT Interface)
(Serial 2 combined with IPC)
Issue 1.1
RI1#, RI2# Input Ring indicator.
DSR1#, DSR2# Input Data set ready.
CTS1#, CTS2# Input Clear to send.
RTS1#, RTS2# Output Request to send.
DTR1#, DTR2# Output Data terminal read.
3.2.9 PARALLEL PORT
PE Paper End. Input status signal from printer.
SLCT Printer Select. Printer selected input.
BUSY# Printer Busy .
Input status signal from printer.
ERR# Error . Input status signal from printer.
ACK# Acknowledge.
Input status signal from printer.
PDDIR# Parallel Device Direction.
Bidirectional control line output.
STROBE# PCS/Strobe#.
Data transfer strobe line to printer.
INIT# Initialize Printer. This output sends an initial-
ize command to the connected printer.
AUTPFDX# Automatic Line feed. This output
sends a command to the connected printer to au-
tomatically generate line feed on received car-
riage returns.
SLCTIN# Select In. Printer select output.
PPD[7-0] Printer Data Lines Data transfer lines to
printer. Bidirectional depending on modes.
(Combined with ISA Bus an IPC)
PIN DESCRIPTION
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