DS21Q42T+ Maxim Integrated Products, DS21Q42T+ Datasheet - Page 66

• Manufacturer Part Number: DS21Q42T+
• Description: IC FRAMER ENHANCED T1 4X 128TQFP
• Manufacturer: Maxim Integrated Products

Specifications of DS21Q42T+

• Controller Type: T1 Framer
• Interface: Parallel/Serial
• Voltage - Supply: 2.97 V ~ 3.63 V
• Current - Supply: 75mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 128-TQFP, 128-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Note:
RBOC: RECEIVE BIT ORIENTED CODE REGISTER (Address = 04 Hex)
(MSB)
LBD
NOTES:
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
on reset.
SYMBOL
SYMBOL
OBYTE
CBYTE
BOC5
BOC4
BOC3
BOC2
BOC1
BOC0
POK
LBD
BD
The RABT, RCRCE, ROVR, and RVM bits are latched and are cleared when read.
BD
POSITION
POSITION
RBOC.7
RBOC.6
RBOC.5
RBOC.4
RBOC.3
RBOC.2
RBOC.1
RBOC.0
RHIR.2
RHIR.1
RHIR.0
BOC5
BOC4
NAME AND DESCRIPTION
Packet OK. Set when the byte available for reading in the
receive FIFO at RHFR is the last byte of a valid message (and
hence no abort was seen, no overrun occurred, and the CRC was
correct).
Closing Byte. Set when the byte available for reading in the
receive FIFO at RHFR is the last byte of a message (whether the
message was valid or not).
Opening Byte. Set when the byte available for reading in the
receive FIFO at RHFR is the first byte of a message.
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.
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BOC3
BOC2
BOC1
(LSB)
BOC0