DS21Q55 Maxim Integrated Products, DS21Q55 Datasheet - Page 208

• 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): -

Figure 31-3. Receive-Side Boundary Timing (with elastic store disabled)
Note 1: RCHBLK is programmed to block channel 24.
Note 2: Shown is RLINK/RLCLK in the ESF framing mode.
Figure 31-4. Receive-Side 1.544MHz Boundary Timing (with Elastic Store
Enabled)
Note 1: RSYNC is in the output mode (IOCR1.4 = 0).
Note 2: RSYNC is in the input mode (IOCR1.4 = 1).
Note 3: RCHBLK is programmed to block channel 24.
RCHBLK 1
RCHBLK
RSYSCLK
RFSYNC
RCHCLK
RMSYNC
RCHCLK
RSYNC
RSYNC
RLINK 2
RLCLK
RSYNC
RSER
RCLK
RSIG
RSIG
RSER
2
1
3
CHANNEL 23
CHANNEL 23
CHANNEL 23
A
CHANNEL 23
A
B
B
C/A D/B
C/A D/B
LSB
LSB
MSB
MSB
208 of 237
CHANNEL 24
CHANNEL 24
CHANNEL 24
A
CHANNEL 24
A
B
B
C/A D/B
C/A D/B
LSB
LSB
F
F
MSB
MSB
CHANNEL 1
CHANNEL 1
CHANNEL 1
CHANNEL 1
A
A