XRT75R12DIB-F Exar Corporation, XRT75R12DIB-F Datasheet - Page 95

• Manufacturer Part Number: XRT75R12DIB-F
• Description: Peripheral Drivers & Components (PCIs) 12 Channel 3.3V-5V temp -45 to 85C
• Manufacturer: Exar Corporation

Specifications of XRT75R12DIB-F

• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Operating Supply Voltage: 3.3 V to 5 V
• Package / Case: TBGA-420
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

REV. 1.0.3
Since the TOH bytes occupy the first three byte columns of each STS-1 frame, and since each STS-1 frame
consists of nine (9) rows, then we can state that the TOH (within each STS-1 frame) consists of 3 byte columns
x 9 rows = 27 bytes. The byte format of the TOH is presented below in
F
C
IGURE
APACITY
39. A S
B
TWELVE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCHRONIZER
YTES
IMPLE
D
ESIGNATED
TOH
3 Bytes
I
LLUSTRATION OF THE
STS-1 F
90 Bytes
Envelope Capacity
RAME
91
S
87 Bytes
TRUCTURE WITH THE
Figure
40.
TOH
AND THE
XRT75R12D
9 Row
E
NVELOPE