ML67Q4002 OKI [OKI electronic componets], ML67Q4002 Datasheet - Page 12

• Manufacturer Part Number: ML67Q4002
• Description: 32-bit ARM-Based General-Purpose Microcontroller
• Manufacturer: OKI [OKI electronic componets]

DMA control signals
DREQ[0]
DREQCLR[0]
TCOUT[0]
DREQ[1]
DREQCLR[1]
TCOUT[1]
UART
SIN
SOUT
CTS
DSR
DCD
DTR
RTS
RI
OKI Semiconductor
Pin Name
I/O
O
O
O
O
O
O
O
I
I
I
I
I
I
I
DREQ type
output by negating DREQ.
DREQ type
output by negating DREQ.
Indicates that modem or data set is ready to transfer data.
modem status register reflects this input.
Data Set Ready.
Indicates that modem or data set is ready to establish a
communications link with UART.
Bit 5 in modem status register reflects this input.
Indicates that modem or data set has detected data carrier signal. Bit
7 in modem status register reflects this input.
Data Carrier Detect
Indicates that UART is ready to establish a communications link with
modem or data set. Bit 0 in modem control register controls this
output.
Indicates that UART is ready to transfer data to modem or data set. Bit
1 in modem control register controls this output.
telephone ring indicator. Bit 6 in modem status register reflects this
input.
Ch 0 DMA request signal, used when DMA controller configured for
Ch 0 DREQ signal clear request. The DMA device responds to this
Indicates to Ch 0 DMA device that last transfer has started.
Ch 1 DMA request signal, used when DMA controller configured for
Ch 1 DREQ signal clear request. The DMA device responds to this
Indicates to Ch 1 DMA device that last transfer has started
SIO receive signal
SIO transmit signal
Clear To Send.
Data Carrier Detect.
Data Terminal Ready.
Request To Send.
Ring Indicator. Indicates that modem or data set has received
Description
Bit 4 in
ML674001/67Q4002/67Q4003
Secondary
Secondary
Secondary
Secondary
Secondary
Secondary
Secondary
Secondary
Secondary
Secondary
Secondary
Secondary
Secondary
Secondary
Secondary
Primary
FEDL674001-01
/
Negative
Negative
Negative
Negative
Negative
Negative
12/24
Positive
Positive
Positive
Positive
Positive
Positive
Positive
Positive
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