COP8-EMFLASH-00 National Semiconductor, COP8-EMFLASH-00 Datasheet - Page 9

• Manufacturer Part Number: COP8-EMFLASH-00
• Description: EMULATOR COP8FLASH
• Manufacturer: National Semiconductor
• Series: COP8™r
• Type: In-Circuit Emulator Systemr

Specifications of COP8-EMFLASH-00

• Contents: PCB, Cables, Null Target Board, Dev CD, Software and Power Supplies
• For Use With/related Products: COP8FLASH Families
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

RS-232 Modular Interface
The communication link to the Host Computer is based on the serial RS-232-C specification. The serial baud rates are
established entirely under software control. Therefore, you do not need to adjust your serial ports baud rate manually.
A 6-Conductor Reversed Telephone Cable Assembly is provided with the emulator; this cable has a 6-pin male
modular plug on each end. The cable mates via a 6-pin male modular plug on the cable at the emulator end:
This plugs into a 6-pin female modular jack on the emulator chassis:
At the host end, the 6-pin male modular connector plugs into a 25-pin female DB-25 adapter for a PC type Host
Computer or a 9-pin female DB-9 adapter for a Pentium/486/386 type Host Computer. Note that DB-9 Pins 2 and 3 are
reversed from their normal 25-pin D connector assignments in the 9-pin RS-232-C interface of the PC AT. Also, note
that the total length of the cable should not exceed 25 feet.
Note that some problems have been observed when using communication ports (on the host computer) that have an
8250 type UART. If you are having communication problems and all attempts at fixing the problem have failed and
your communication port uses an 8250 type UART you might try replacing the communication port with one that uses
Signal
Ground
DTR
TxD
RxD
RTS
CTS
Host PC Cable
Connector
Female
DB-25
20
2
3
4
5
7
Pin
Female
DB-9
3
2
7
8
5
4
Reset ICE – active low
Data to Host
Data to ICE
Function
DC Ground
Handshake
Handshake
5
Cable
Direction
Cable Connector
Modular
Emulator Base
Male
Pin
3
4
6
5
2
1
Signal
Ground
DTR
RxD
TxD
RTS
CTS