78P2352-IEL TERIDIAN [Teridian Semiconductor Corporation], 78P2352-IEL Datasheet - Page 20

• Manufacturer Part Number: 78P2352-IEL
• Description: Dual Channel OC-3/ STM1-E/ E4 LIU
• Manufacturer: TERIDIAN [Teridian Semiconductor Corporation]

CONTROL PINS (continued)
Page: 20 of 42
NAME
TXOUT1
TXOUT0
TXPD
SPSL
CKSL
PIN DESCRIPTION
PIN
14
77
81
1
2
TYPE
(CONTINUED)
CID
CID
CIT
CIT
CIT
DESCRIPTION
Advanced Tx Control 1:
Advanced Tx Control 0:
Transmitter Power Down:
When high, powers down and tr-states the transmitt driver on both channels.
Serial Port Selection:
When high, chip is software controlled through the serial port.
Reference Clock Frequency Selection:
Selects the reference frequency that is supplied at the CKREFP/N pins. Its
level is read in only at power-up or on the rising edge of a reset signal at the
PORB pin.
Float: Normal operation
Low: Nominal amplitude
Float: 5% amplitude boost
High: 10% amplitude boost
Low: Enables fixed LVPECL equalizer at the transmit inputs SIDP/N for
High: Normal operation
•
•
•

2006 Teridian Semiconductor Corporation
Low: 19.44MHz or 17.408MHz
Float: 77.76MHz
High: 155.52MHz or 139.264MHz
FR4 trace lengths up to 1.5m.
OC-3/ STM1-E/ E4 LIU
Dual Channel
78P2352
Rev. 2.4