SI2414 SILABS [Silicon Laboratories], SI2414 Datasheet - Page 21

• Manufacturer Part Number: SI2414
• Manufacturer: SILABS [Silicon Laboratories]

Character
/Un
/Zn
/Tn
/G
/Q
/E
/B
/S
/A
//
//
Direction
RX
RX
RX
RX
RX
RX
RX
RX
TX
TX
TX
Table 10. Synchronous DCE Mode Metacharacters
Follows the last character of a transmit frame. Once the frame has been sent, a /T
, metacharacter is sent to the host. n denotes a frame tag. n is echoed back later
with the /U or /T metacharacters to make frame tracking easier.
A forward slash character is to be transmitted.
Escape back to Command mode. Si2456/33/14 returns to Command mode.
A transmit underrun has occurred, but a /Z metacharacter was not received. When
an underrun occurs, the current frame is aborted, and a /Un is sent to host where n
is the frame tag. All data following the underrun, up to the /Z metacharacter, is dis-
carded by the modem.
The transmit frame n has been sent. The n from the /Z is echoed with the /Tn to
allow tracking frames.
The previous receive frame CRC check was successful.
The previous receive frame CRC check was unsuccessful.
Transmit buffer is almost full, and the host must pause transmission to prevent an
overflow. If hardware flow control is used, the host may ignore this metacharacter.
The host may begin transmitting again after a /S (pause) has been sent. If hard-
ware flow control is used, the host may ignore this metacharacter.
A forward slash character was received.
Received frame was aborted.
Rev. 0.9
Si2456/Si2433/Si2414
Description
21