
Data Sheet
53
Rev. 1.2, 2006-01-26
QuadFALC
TM
PEF 22554 E
Pin Descriptions
57,
58,
59,
60
XPA4
XPB4
XPC4
XPD4
I/O
PU/–
Transmit Multifunction Pins A to D, port 4
Depending on programming of bits PC(1:4).XPC(3:0) these
multifunction ports carry information to the system interface
or from the system to the QuadFALC
TM. After reset the ports
are configured to be inputs. With the selection of the
appropriate pin function, the corresponding input/output
configuration is achieved automatically. Depending on bit
SIC3.RESX latching/transmission of data is done with the
rising or falling edge of SCLKX. If not connected, an internal
pullup transistor ensures a high input level.
Each input function (SYPX, XMFS, XSIG,TCLK, XLT or XLT)
may only be selected once. SYPX and XMFS must not be
used in parallel.
Selectable pin functions as described for port 1.
Power Supply
114
VDDR1
S
–
Positive Power Supply
For the analog receiver 1 (3.3 V)
139
V
DDR2
S–
Positive Power Supply
For the analog receiver 2 (3.3 V)
42
V
DDR3
S–
Positive Power Supply
For the analog receiver 3 (3.3 V)
67
V
DDR4
S–
Positive Power Supply
For the analog receiver 4 (3.3 V)
110
V
DDX1
S–
Positive Power Supply
For the analog transmitter 1 (3.3 V)
143
V
DDX2
S–
Positive Power Supply
For the analog transmitter 2(3.3 V)
38
V
DDX3
S–
Positive Power Supply
For the analog transmitter 3 (3.3 V)
71
V
DDX4
S–
Positive Power Supply
For the analog transmitter 4 (3.3 V)
63
V
DDC
S–
Positive Power Supply
For the digital core (1.8 V).
These pins can either be positive power supply input or
output, dependent on VSEL:
VSEL connected to V
SS : 1.8 V power supply inputs, require
decoupling.
VSEL connected to V
DD: 1.8 V outputs for decoupling to VSS.
These pins must not be used to supply external devices.
118
124
V
S–
Positive Power Supply
For the analog PLL (3.3 V)
132
10
V
DDP
S–
Positive Power Supply
For the digital pads (3.3 V)
For correct operation, all V
DDP pins have to be connected to
positive power supply.
28
55
101
Table 1
I/O Signals for P-TQFP-144-8 (cont’d)
Pin No.
Name
Pin Type
Buffer
Type
Function