
QuadFALC
TM
PEF 22554 E
Functional Description E1/T1/J1
Data Sheet
126
Rev. 1.2, 2006-01-26
and PC4.RPC4(3:0) respectively.
The functions of XP(A:D) are configured by PC(1:4).XPC(1:4)(3:0) respectively.
The actual logical state of the 8multifunction ports can be read out using the register MFPI (MFPI_E, MFPI_T).
This function together with static output signal options in Table 31 offers general purpose I/O functionality on
unused multi function port pins.
If a port is configured as GPOH or GPOL the port level is set to high or low level respectively.
Each of the input functions may only be selected once in a channel except for the GPI functionality. No input
function must be selected twice or more.
Table 31
Multi Function Port Selection
Selection
RFP Signal Available
on port
RFP Function
XFP Signal Available
on port
XFP Function
0000
SYPR
A, B, C, D
Synchronous pulse
receive input
SYPX
A, B, C, D
Synchronous pulse
transmit input
0001
RFM
A, B, C, D
Receive frame
marker output
XMFS
A, B, C, D
Transmit multiframe
synchronization input
0010
RMFB
A, B, C, D
Receive multiframe
begin marker output
XSIG
A, B, C, D
Transmit signaling
data input
0011
RSIGM
A, B, C, D
Receive signaling
marker output
TCLK
A, B, C, D
Transmit clock input
0100
RSIG
A, B, C, D
Receive signaling
data output
XMFB
A, B, C, D
Transmit multiframe
begin marker output
0101
DLR
A, B, C, D
Data link bit receive
output
XSIGM
A, B, C, D
Transmit signaling
marker output
0110
FREEZE
A, B, C, D
Freeze signaling
output
DLX
A, B, C, D
Data link bit transmit
output
0111
RFSP
A, B, C, D
Frame synchronous
pulse output
XCLK
A, B, C, D
Transmit clock output
1000
RLT
A, B, C, D
Receive line
termination (analog
300
switch); if RLT
is selected, the switch
is off, independend
from LIM0.RTRS and
the logical value at
RLT
XLT
A, B, C, D
Transmit line tristate
control, high active
1001
GPI
A, B, C, D
General purpose
input
GPI
A, B, C, D
General purpose
input
1010
GPOH
A, B, C, D
General purpose
output high
GPOH
A, B, C, D
General purpose
output high
1011
GPOL
A, B, C, D
General purpose
output low
GPOL
A, B, C, D
General purpose
output low
1100
LOS
A, B, C, D
Loss of signal
indication output
Reserved
A, B, C, D
Reserved
1101
RTDMT
A, B, C, D
Receive system
interface tristate for
pins RDO, RSIG,
SCLKR, RFM;
logically exored with
SIC3.RRTRI
Reserved
A, B, C, D
Reserved