DS21FT42 Maxim Integrated Products, DS21FT42 Datasheet - Page 71

• Manufacturer Part Number: DS21FT42
• Description: IC FRAMER T1 4X3 12CH 300-BGA
• Manufacturer: Maxim Integrated Products

Specifications of DS21FT42

• Controller Type: T1 Framer
• Interface: Parallel/Serial
• Voltage - Supply: 2.97 V ~ 3.63 V
• Current - Supply: 225mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 300-BGA
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

RBOC: RECEIVE BIT ORIENTED CODE REGISTER (Address = 04 Hex)
NOTE:
1. The LBD bit is latched and will be cleared when read.
2. The RBOC0 to RBOC5 bits display the last valid BOC code verified; these bits will be set to all ones
RHFR: RECEIVE HDLC FIFO (Address = 05 Hex)
HDLC7
(MSB)
(MSB)
on reset.
LBD
SYMBOL
SYMBOL
HDLC7
HDLC6
HDLC5
HDLC4
HDLC3
HDLC2
HDLC1
HDLC0
BOC5
BOC4
BOC3
BOC2
BOC1
BOC0
LBD
BD
HDLC6
BD
POSITION
POSITION
RBOC.7
RBOC.6
RBOC.5
RBOC.4
RBOC.3
RBOC.2
RBOC.1
RBOC.0
RHFR.7
RHFR.6
RHFR.5
RHFR.4
RHFR.3
RHFR.2
RHFR.1
RHFR.0
HDLC5
BOC5
NAME AND DESCRIPTION
NAME AND DESCRIPTION
Latched BOC Detected. A latched version of the BD status
bit (RBOC.6). Will be cleared when read.
BOC Detected. A real–time bit that is set high when the
BOC detector is presently seeing a valid sequence and set low
when no BOC is currently being detected.
BOC Bit 5. Last bit received of the 6–bit code word.
BOC Bit 4.
BOC Bit 3.
BOC Bit 2.
BOC Bit 1.
BOC Bit 0. First bit received of the 6–bit code word.
HDLC Data Bit 7. MSB of a HDLC packet data byte.
HDLC Data Bit 6.
HDLC Data Bit 5.
HDLC Data Bit 4.
HDLC Data Bit 3.
HDLC Data Bit 2.
HDLC Data Bit 1.
HDLC Data Bit 0. LSB of a HDLC packet data byte.
BOC4
HDLC4
71 of 114
BOC3
HDLC3
BOC2
HDLC2
BOC1
HDLC1
(LSB)
BOC0
HDLC0
(LSB)