MC56F8323EVM Freescale Semiconductor, MC56F8323EVM Datasheet - Page 22

• Manufacturer Part Number: MC56F8323EVM
• Description: KIT EVALUATION FOR MC56F8323
• Manufacturer: Freescale Semiconductor
• Type: DSPr

Specifications of MC56F8323EVM

• Contents: Module and Misc Hardware
• Processor To Be Evaluated: MC56F8322 and MC56F8323
• Data Bus Width: 16 bit
• Interface Type: RS-232
• For Use With/related Products: MC56F8322, MC56F8323
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

2.2 RS-232 Serial Communications
The 56F8323EVM provides an RS-232 interface by the use of an RS-232 level converter, Maxim
MAX3245EEAI, designated as U3. Refer to the RS-232 schematic diagram in
RS-232 level converter transitions the SCI UART’s +3.3V signal levels to RS-232-compatible
signal levels and connects to the host’s serial port via connector P2. Flow control is not provided,
but could be implemented using uncommitted GPIO signals and connected to the RTS and CTS
signals on JG13; see
converter by removing the jumpers in JG5; reference
detailed in
jumper at JG4.
2-4
Table
2-3. The RS-232 level converter/transceiver can be disabled by placing a
Figure 2-1. Schematic Diagram of the RS-232 Interface
56F8323
Table
RXD1
TXD1
Jumper Removed:
Enable RS-232
Jumper Pin 1-2:
Disable RS-232
Table 2-1. Flow Control Header Options
2-1. The SCI1 port signals can be isolated from the RS-232 level
Pin #
MC56F8323EVM User Manual, Rev. 2
1
2
CTS
RTS
JG5
1
3
JG13
1
JG4
2
4
2
1
2
+3.3V
CTS from Transceiver
RTS to Transceiver
JG13
Signal
FORCEOFF
T2in
R2out
T1in
R1out
Level Converter
Table
Interface
RS-232
T2out
T1out
R2in
R1in
2-2. The pin-out of connector P2 is
x
1
6
2
7
3
8
4
9
5
Freescale Semiconductor
P2
Figure
2-1. The
Preliminary