DS21Q55 Maxim Integrated Products, DS21Q55 Datasheet - Page 217

• 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 31-19. Transmit-Side Boundary Timing (Elastic Store Disabled)
Note 1: TSYNC is in the output mode (IOCR1.1 = 1).
Note 2: TSYNC is in the input mode (IOCR1.1 = 0).
Note 3: TCHBLK is programmed to block channel 2.
Note 4: TLINK is programmed to source the Sa4 bit.
Note 5: The signaling data at TSIG during channel 1 is normally overwritten in the transmit formatter with the CAS MF alignment nibble (0000).
Note 6: Shown is a TNAF frame boundary.
Figure 31-20. Transmit-Side Boundary Timing, TSYSCLK = 1.544MHz
(Elastic Store Enabled)
Note 1: The F-bit position in the TSER data is ignored.
Note 2: TCHBLK is programmed to block channel 24.
TSYSCLK
TCHBLK
TCHCLK
TSSYNC
TCHBLK
TCHCLK
TSER
TSYNC
TSYNC
TLCLK
TLINK
TSER
TCLK
TSIG
1
2
1
2
3
4
4
LSB
D
DON'T CARE
CHANNEL 23
Si
1
A
Sa4 Sa5 Sa6 Sa7 Sa8
CHANNEL 1
LSB MSB
CHANNEL 1
217 of 237
CHANNEL 24
MSB
DON'T CARE
LSB
CHANNEL 2
CHANNEL 2
A
F MSB
B
C
LSB MSB
CHANNEL 1
D