Freescale Semiconductor MC9S08MM128 solution for portable medical applications TWR-S08MM128-KIT TWR-S08MM128-KIT Manual Do Utilizador
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TWR-S08MM128-KIT
TWR‐MC9S08MM128 User Manual
Page 5 of 13
3.4
RS232 Interface
An RS232 transceiver on the TWR‐S08MM128 connects to a standard 2x5 pin header (refer to Figure
2). Selection jumpers J15 and J16 allow MC9S08MM128 SCI2 signals to be routed to either the RS232
transceiver or the OSBDM circuit. Refer to Figure 5 for more details.
Alternatively, when assembled as a Tower System, the MC9S08MM128 SCI1 TX and RX are routed to
the SER‐TWR. If the SER‐TWR jumpers are configured to run in RS‐232 mode, the SCI1 TX and the RX
signal can be communicated via the RS232 connector from the TWR‐SER. Please refer to the TWR‐SER
user manual (TWRSERUM) from
2). Selection jumpers J15 and J16 allow MC9S08MM128 SCI2 signals to be routed to either the RS232
transceiver or the OSBDM circuit. Refer to Figure 5 for more details.
Alternatively, when assembled as a Tower System, the MC9S08MM128 SCI1 TX and RX are routed to
the SER‐TWR. If the SER‐TWR jumpers are configured to run in RS‐232 mode, the SCI1 TX and the RX
signal can be communicated via the RS232 connector from the TWR‐SER. Please refer to the TWR‐SER
user manual (TWRSERUM) from
MC9S08MM128
Signal
Pin
MC9S08MM128
Signal
Not Connected
1
2
Not Connected
TX2
3
4
Not Connected
RX2
5
6
Not Connected
Not Connected
7
8
Not Connected
GND
9
10 3.3V
Figure 2. RS232 2x5 Pin Header Connections
3.5
Infrared Port
The TWR‐S08MM128 implements an infrared transmit and receive port. The transmit circuit is
implemented with an infrared diode and the user can choose to drive the diode either with IRO or SCI
TX. The receiver is implemented by an infrared transistor and the user can choose to input this signal
to the SCI RX or the ACMP input. Jumpers J9, J25 and J26 are used for routing the connections, refer to
Section 4 to set the jumpers. Please refer to application note AN4116, searchable from
www.freescale.com
implemented with an infrared diode and the user can choose to drive the diode either with IRO or SCI
TX. The receiver is implemented by an infrared transistor and the user can choose to input this signal
to the SCI RX or the ACMP input. Jumpers J9, J25 and J26 are used for routing the connections, refer to
Section 4 to set the jumpers. Please refer to application note AN4116, searchable from
www.freescale.com
3.6
Medical Connector
The TWR‐S08MM128 features a 2x10 expansion connector J27 (refer to Figure 3) to MED‐EKG for
routing the medical engine signals to external medical board so it can use the OPAMP, TRIAMP, ADC
and DAC on MC9S08MM128 to implement the requirement signal conditioning for medical
applications.
When the DSC MC56F8006 from the MED‐EKG is enabled, MC9S08MM128 can choose to read the
conditioned EKG results output from the DSC via I2C transmission (pin 3 and pin 4). To enable I2C
communication, you must assemble the MEG‐EKG with the Tower System because the TWR‐SER has
the pulled up resistors circuit required for I2C transmission.
In Figure 3, the bold text highlights the functions that are used to implement the MED‐EKG
demonstration. For detail about the MED‐EKG, please refer to the MED‐EKG user manual, MED‐EKG lab
routing the medical engine signals to external medical board so it can use the OPAMP, TRIAMP, ADC
and DAC on MC9S08MM128 to implement the requirement signal conditioning for medical
applications.
When the DSC MC56F8006 from the MED‐EKG is enabled, MC9S08MM128 can choose to read the
conditioned EKG results output from the DSC via I2C transmission (pin 3 and pin 4). To enable I2C
communication, you must assemble the MEG‐EKG with the Tower System because the TWR‐SER has
the pulled up resistors circuit required for I2C transmission.
In Figure 3, the bold text highlights the functions that are used to implement the MED‐EKG
demonstration. For detail about the MED‐EKG, please refer to the MED‐EKG user manual, MED‐EKG lab