Rainbow Electronics RC1290 - Manual (Page 8)

RC1240/1280/1290
 2005 Radiocrafts AS RC1240/RC1280/RC1290 Data Sheet (rev. 1.3) Page 8 of 17
OFF IDLE
t
OFF-IDLE
SLEEP IDLE
t
SLEEP-IDLE
RESET IDLE
t
RESET-IDLE
CONFIG CONFIG
t
C-CONFIG
IDLE
t
CONFIG-IDLE
’C’ ’X’
CONFIG
MEMORY CONFIG
CONFIG
t
MEMORY-CONFIG
’M’ 0xFF
IDLE
t
CONFIG-IDLE
’X’
Symbol Value Description / Note
t
RX-TXD
500 us Time from last byte is received from the air until first character is sent
on the UART
t
TXD
Min 621 us t
TXD
= # bytes received x 621 us/char (10 bits at 19.2 kBd + 100 us
delay per character)
t
TXD-IDLE
5 ms Time from last character is sent on the UART until module is in IDLE
mode (ready for RXD and RX)
t
PACKET-
TIMEOUT
Programmable If enabled, the packet timeout can be configured from 32 ms to 4.08
s. If end character or fixed packet length is used, the timeout is 0.
T
RXD-CTS
25 us Time from last character is received by the UART (including any
timeout) until CTS is activated
t
RXD-TX
1.3 ms Time from last character is received by the UART (including any
timeout) until the module sends the first byte on the air.
T
TX-IDLE
5 ms Time from last character is sent on the air until module is in IDLE
mode (ready for RXD and RX)
t
OFF-IDLE
160 ms
t
RESET-IDLE
160 ms
t
SLEEP-IDLE
55 ms
t
C-CONFIG
43 ms
t
MEMORY-
CONFIG
66 ms In this period the internal flash is programmed. Do not reset, turn the
module off, or allow any power supply dips in this period as it may
cause permanent error in the Flash configuration memory. After 0xFF
the host should wait for the ‘>’ prompt before any further action is
done to ensure correct re-configuration.
t
CONFIG-IDLE
5 ms
t
TX
Min 21.7 ms t
TX
= # bytes to send x 1.67 ms/byte (at 4.8 kbit/s). Add 13 overhead
bytes if addressing and CRC is not used. Add additionally 2 extra
bytes for addressing and 2 extra bytes for CRC if enabled.