DS2154L+ Maxim Integrated Products, DS2154L+ Datasheet - Page 41

• Manufacturer Part Number: DS2154L+
• Description: IC TXRX E1 1CHIP 5V ENH 100-LQFP
• Manufacturer: Maxim Integrated Products
• Type: Transceiverr

Specifications of DS2154L+

• Number Of Drivers/receivers: 1/1
• Protocol: E1
• Voltage - Supply: 4.75 V ~ 5.25 V
• Mounting Type: Surface Mount
• Package / Case: 100-LQFP
• Product: Framer
• Number Of Transceivers: 1
• Data Rate: 1.544 Mbps
• Supply Voltage (max): 5.25 V
• Supply Voltage (min): 4.75 V
• Supply Current (max): 75 mA (Typ)
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Mounting Style: SMD/SMT
• Ic Interface Type: Parallel, Serial
• Supply Voltage Range: 4.75V To 5.25V
• Operating Temperature Range: 0°C To +70°C
• Digital Ic Case Style: LQFP
• No. Of Pins: 100
• Filter Terminals: SMD
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

6.4 FAS Error Counter
FAS Count Register 1 (FASCR1) is the most significant word and FASCR2 is the least significant word
of a 12-bit counter that records word errors in the Frame Alignment Signal in time slot 0. This counter is
disabled during loss of synchronization conditions, (RLOS = 1). Since the maximum FAS word error
count in a 1-second period is 4000, this counter cannot saturate.
FASCR1: FAS BIT COUNT REGISTER 1 (Address = 02 Hex)
FASCR2: FAS BIT COUNT REGISTER 2 (Address = 04 Hex)
Note 1: The lower 2 bits of FASCR1 at address 02 are the most significant bits of the 10-bit CRC4 error counter.
Note 2: The lower 2 bits of FASCR2 at address 04 are the most significant bits of the 10-bit E-bit counter.
(MSB)
FAS11
FAS5
SYMBOL
FAS11
FAS0
FAS10
FAS4
POSITION
FASCR1.7
FASCR2.2
FAS9
FAS3
FAS8
FAS2
NAME AND DESCRIPTION
MSB of the 12-bit FAS error count.
LSB of the 12-bit FAS error count.
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FAS7
FAS1
FAS6
FAS0
(Note 1)
(Note 2)
(Note 1)
(Note 2)
(LSB)
FASCR1
FASCR2