ml675050 Oki Semiconductor, ml675050 Datasheet - Page 19

• Manufacturer Part Number: ml675050
• Description: Arm7tdmi Based Micro-controller For Ic Card Reader/writer
• Manufacturer: Oki Semiconductor

PIN DISCRIPTION (SERIAL INTERFACE (UART/SIO/I2C) SIGNALS)
Pin name
UARTsignals (2ch installed : ch0, ch1)
ch0 : The combination of SIN0, SOUT0, CTS, DSR, DCD, DTR, RTS, RI.
ch1 : The combination of SIN1, SOUT1.
SIN0
SIN1
SOUT0
SOUT1
CTS
DSR
DCD
DTR
RTS
RI
SIO signals
uSIN
uSOUT
I2C signals (2ch installed : ch0, ch1)
ch0 : The combination of SDA0, SCL0.
ch1 : The combination of SDA1, SCL1.
SDA0
SDA1
SCL0
SCL1
OKI Semiconductor
Discript in
FUNCTION
LIST
UART Rx
UART Tx
UART CTS
UART DSR
UART DCD
UART DTR
UART RTS
UART RI
SIO Rx
SIO Tx
I2C Data
I2C Clock
IO
IO
IO
O
O
O
O
I
I
I
I
I
I
Discript in detail
(Inside the parentheses the QFP pin number is shown)
SIO receive signal
(SIN0:75, SIN1:85)
SIO transmit signal
(SOUT0:76, SOUT1:86)
Clear To Send (77)
Indicates that modem or data set is ready to
transfer data.
Bit 4 in modem status register reflects this input.
Data Set Ready (139)
Indicates that modem or data set is ready to
establish a
communication link with UART.
Bit5 in modem status register refrects this input.
Data Carrier Detect (82)
Indicates that modem or data set has detected
data carrier signal.
Bit7 in modem status register reflects this input.
Data Terminal Ready (140)
Indicates that UART is ready to establish a
communicationslink with modem or data set.
Bit0 in modem control register controls this output.
Request To Send (78)
Indicates that UART is ready to transfer data to
modem or data set.
Bit1 in modem control register controls this output
Ring Indicator (128)))
Indicates that modem or data set has received
telephone ring indicator.
Bit6 in modem status register refrects this input.
SIO receive signal
(49)
SIO transmit signal
(19)
I2C Data. This pin operates as NMOS Open drain.
Connect pull-up resistor.
(SDA0:20, SDA1:10)
I2C Clock. This pin operates as NMOS Open drain.
Connect pull-up resistor.
(SCL0:21, SCL1:35)
Primary/
Secondary/
Tertiary
Secondary
Secondary
Secondary
Secondary
Secondary
Secondary
Secondary
Secondary
Tertiary
Tertiary
Secondary
Secondary
FEDL675050-02
ML675050
Logic
Positive
Positive
Negative
Negative
Negative
Negative
Negative
Negative
Positive
Positive
Positive
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