78P2343JAT
3-port E3/DS3/STS-1 LIU
with Jitter Attenuator
PIN DESCRIPTION (continued)
SERIAL-PORT PINS
NAME
PIN
TYPE
DESCRIPTION
Chip Select:
High during write and read operations. Low disables the serial port.
While CS is low, SDO remains in high impedance state, and SDI and
SCK activities are ignored.
CS
65
CI
Serial Clock:
Controls the timing of SDI and SDO.
SCK
SDI
66
68
CIS
CI
Serial Data Input:
Inputs mode and address information. Also inputs register data during
a Write operation. Both address and data are input least significant bit
first.
Serial Data Output:
Outputs register information during a Read operation. Data is output
least significant bit first.
SDO
67
COZ
POWER AND GROUND PINS
It is recommended that all supply pins be connected to a single power supply plane and all ground pins be
connected to a single ground plane.
NAME
PINS
TYPE DESCRIPTION
1, 2, 3, 4, 17, 59,
72, 73, 74, 75
VCC
S
S
S
S
Analog Power Supply
18, 60, 78, 81, 84,
87, 91, 94, 97, 100
GND
Analog Ground
16, 22, 30, 38, 46,
54, 55, 58
VCCD
GNDD
Digital Power Supply
Digital Ground
9, 21, 26, 34, 42,
50, 56, 69
Page 16 of 37
2005 Teridian Semiconductor Corporation
Rev 2.2
TERIDIAN [ TERIDIAN SEMICONDUCTOR CORPORATION ]
