PEF2054NV21XT Lantiq, PEF2054NV21XT Datasheet - Page 201

• Manufacturer Part Number: PEF2054NV21XT
• Manufacturer: Lantiq

Specifications of PEF2054NV21XT

• Lead Free Status / Rohs Status: Compliant

Figure 69
Flow Diagram “Transmit Command”
Transmit Continuous Command
The transmit continuous command can be used in IOM-2 applications only (active
handshake protocol) to send monitor messages longer than 16 bytes to a single
subscriber circuit.
When this command is given, the EPIC transmits the contents of the MFFIFO as with the
normal transmit command but does not conclude the transfer by setting MX inactive
when the MFFIFO is empty. Instead, the P is interrupted (ISTA:MFFI) and requested to
write a new block of data into the MFFIFO. This block may then again be transmitted
using the transmit continuous command or, if it is the last block of the long message, it
may be transmitted using the normal transmit command (CMDR:MFT1, MFT0 = 01). If
an answer is expected from the subscriber circuit, the last block may also be terminated
using the transmit + receive command (CMDR:MFT1, MFT0 = 10). Each message block
may be of arbitrary length (1 to 16 bytes).
Semiconductor Group
P µ
W : CMDR = 01
R : STAR = 05
W : MFFIFO = Data
R : STAR = 04
W : MFSAR = Address
W : CMDR = 04
R : STAR = 12
R : STAR = 13
R : ISTA = 20
R : STAR = 05
MFFR
MFAE, MFFE
1
2
N
MFTC1, 0 = 00
MFT1, 0 = 01
MFTO, MFRW, MFFE
MFFI Interrupt
201
EPIC
MFFIFO Reset
MFFIFO Empty
Write Access Enabled
MFFIFO not Empty
Write Access Enabled
MFFIFO not Empty
Access Disabled
Transfer in Operation
MFFIFO Empty
Access Disabled
Transfer in Operation
MFFIFO Empty
Write Access Enabled
Transfer Completed
R
ITD08085
Application Hints
PEB 2055
PEF 2055
Da 1
Ack 1
Da 2
Ack 2
Da N
Ack N
MR = 0
MR = 1