DS21Q55 Maxim Integrated Products, DS21Q55 Datasheet - Page 133

• 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/Receive SS7 Fill-In Signal Unit Delete (RSFD)
Bits 1 to 5/Unused, must be set to 0 or proper operation
Bit 6/Receive HDLC Mapping Select (RHMS)
Bit 7/Receive HDLC Reset (RHR). Resets the receive HDLC controller and flushes the receive FIFO. Must be
cleared and set again for a subsequent reset.
0 = normal operation; all FISUs are stored in the receive FIFO and reported to the host.
1 = When a consecutive FISU having the same BSN the previous FISU is detected, it is deleted without
host intervention.
0 = receive HDLC assigned to channels
1 = receive HDLC assigned to FDL (T1 mode), Sa bits (E1 mode)
0 = normal operation
1 = reset receive HDLC controller and flush the receive FIFO
RHR
7
0
RHMS
H1RC, H2RC
HDLC #1 Receive Control
HDLC #2 Receive Control
31h, 32h
6
0
—
5
0
—
4
0
133 of 237
—
0
3
—
2
0
—
1
0
RSFD
0
0