PXB4219 Datasheet, PDF (30/290 Pages) Infineon Technologies AG – IWE8 Interworking Element for 8 E1/T1 Lines

2.2.3 IMA Interface
PXB4219 / PXB4220 / PXB4221
Pin Descriptions
Table 3
Pin No.
Y10
L20
M1, W5,
Y5
IMA Interface
Symbol
Input (I) Function
Output (O)
ATBTC
O
Tri
ATM Transmit Buffer Threshold
Crossing
Indicates if the difference between the write
and read pointer of the mapping buffer
became smaller than a SW selectable
threshold
UNCHEC
O
Tri
Uncorrectable HEC Error
Indicates if a cell has been discarded due to
an uncorrectable HEC error
PN[2:0]
O
Tri
Port Number
Indicates the port number where the cell
causing ATBT or UNCHEC being asserted
came from
2.2.4 Clock Recovery Interface
Table 4
Pin No.
Y18
Y20
W20
T17
T20
Clock Recovery Interface
Symbol
Input (I) Function
Output (O)
SDI
I
Serial Data Input
Clock recovery frame input.
SDOD
O
Tri
Serial Data Output Data
Clock recovery frame output
SDOR
O
Tri
Serial Data Output Reset
Clock recovery reset frame output
SSP
O
Serial Synchronization Pulse
Tri
Frame synchronization pulse output
SCLK
O
Serial Clock
Tri
Clock output of the clock recovery interface.
Runs at the same frequency than the
CLOCK input
Data Sheet
30
2002-05-06