pef2256e Infineon Technologies Corporation, pef2256e Datasheet - Page 202

• Manufacturer Part Number: pef2256e
• Description: E1/t1/j1 Framer And Line Interface Component For Long- And Short-haul Applications
• Manufacturer: Infineon Technologies Corporation

6.5
Some output signals can be switched into tristate mode if unused or for wired-OR
configurations. See
Table 53
Signal
RCLK
RDO
RSIG
SEC/FSC
RPA
RPB
RPC
RPD
XPA
XPB
XPC
XPD
XL1
XL2
D(15:0)
User’s Manual
Hardware Description
Output Signal Tristate Modes
Output Tristate Programming (E1)
Tristate Mode Selection
PC5.CRP = 0
SIC3.RTRI = 1
SIC3.FSCT = 1
PC1.RPC(3:0) = 1001
PC2.RPC(3:0) = 1001
PC3.RPC(3:0) = 1001
PC4.RPC(3:0) = 1001
PC1.XPC(3:0) = 1001
PC2.XPC(3:0) = 1001
PC3.XPC(3:0) = 1001
PC4.XPC(3:0) = 1001
XPM2.XLT = 1
or
PC1.XPC(3:0) = 1000
or
PC2.XPC(3:0) = 1000
or
PC3.XPC(3:0) = 1000
or
PC4.XPC(3:0) = 1000
WR = low
Table 53
B
for more detail.
B
B
B
B
B
B
B
B
B
B
B
B
B
and XPA = high
and XPB = high
and XPC = high
and XPD = high
202
Operational Description E1
Note
Internal pull-up active
During inactive channel
phases only
Internal pull-up active
Internal pull-up active
Internal pull-up active
Internal pull-up active
Internal pull-up active
Internal pull-up active
Internal pull-up active
Internal pull-up active
DS1.1, 2003-10-23
PEF 2256 H/E
FALC
®
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