Rcp Serial Ports; Rcp Commands; Table 2-3 Rcp Serial Connector Pinout - Sun Microsystems Netra ft 1800 Hardware Reference Manual

2.6.1

RCP Serial Ports

The RCP is equipped with two serial ports. One is internal to the microcontroller
and the other is an external DUART. The communications protocol is N,8,1,9600, and
the pinout for both ports is shown in
TABLE 2-3
Pin
2
3
5
Shell
2.6.2

RCP Commands

Case is important; the commands are based on a mask of two uppercase letters
followed by a maximum of four lowercase letters. The following paragraphs
describe these commands.
When commands are entered:
All characters are considered. White space within address or command strings
causes an error.
The RCP will not respond to a carriage return or line feed that does not have any
preceding characters.
A command preceded by additional characters (for example, xxxAAres instead
of AAres) will be considered invalid.
A carriage return or line feed, or both in either order, denotes the termination of a
command.
Only one command can be given at a time – a carriage return and/or line feed
must follow each command.
The RCP will echo commands once parsed, whether or not the parsing was
successful, unless the buffer overflows. If the parsing is unsuccessful, the echoed
command is followed by a question mark (?).
2.6.2.1 Motherboard Reset
Each RCP receives two active low external reset signals from the Alarm connector on
its associated CAF. These are handled separately and must be greater than 200 ms
and less than 300 ms in length. On receipt of a valid external reset signal, the RCP
resets its motherboard with a 250 ms pulse.
RCP Serial Connector Pinout
Function
TxD
RxD
Sref
Gnd
TABLE 2-3
I/O
O
I
Chapter 2
Signal Description
Transmit Data
Receive Data
Signal Reference
Chassis ground
Motherboards 2-9