DS21Q55 Maxim Integrated Products, DS21Q55 Datasheet - Page 191

• Manufacturer Part Number: DS21Q55
• Description: IC TXRX QUAD T1/E1/J1 SCT 256BGA
• Manufacturer: Maxim Integrated Products

Specifications of DS21Q55

• Function: Transceiver
• Interface: E1, J1, T1
• Number Of Circuits: 4
• Voltage - Supply: 3.14 V ~ 3.47 V
• Current - Supply: 75mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 256-BGA
• Includes: BERT Generator and Detector, Dual HDLC Controllers
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Power (watts): -

Register Name:
Register Description:
Register Address:
Bit #
Name
Default
Bit 0/Extended System Information Bus Enable (ESIEN)
Bits 1 to 3/Output Data Bus Line Select (ESIBSEL0 to ESIBSEL2). These bits tell the device what data bus bit
to output the ESIB data on when one of the ESIB information registers is accessed. Each member of the ESIB
group must have a unique bit selected.
Bits 4 to 7/Unused, must be set to 0 for proper operation
ESIBSEL2
0
0
0
0
1
1
1
1
0 = disabled
1 = enabled
—
7
0
ESIBSEL1
0
0
1
1
0
0
1
1
—
6
0
ESIBCR1
Extended System Information Bus Control Register 1
B0h
ESIBSEL0
—
5
0
0
1
0
1
0
1
0
1
—
4
0
Bus Bit Driven
ESIBSEL2
191 of 237
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
3
0
ESIBSEL1 ESIBSEL0
2
0
0
1
ESIEN
0
0