DS21FT42 Maxim Integrated Products, DS21FT42 Datasheet - Page 32

• 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

RCR2: RECEIVE CONTROL REGISTER 2 (Address=2C Hex)
(MSB)
RCS
SYMBOL
MOSCRF
RESYNC
RD4YM
RZBTSI
SYNCE
RSDW
FSBE
RSIO
RSM
RCS
RZBTSI
POSITION
RCR1.1
RCR1.0
RCR2.7
RCR2.6
RCR2.5
RCR2.4
RCR2.3
RCR2.2
RCR2.1
RCR2.0
RSDW
NAME AND DESCRIPTION
Sync Enable.
0 = auto resync enabled
1 = auto resync disabled
Resync. When toggled from low to high, a resynchronization
of the receive side framer is initiated. Must be cleared and
set again for a subsequent resync.
Receive Code Select. See Section 15 for more details.
0 = idle code (7F Hex)
1 = digital milliwatt code (1E/0B/0B/1E/9E/8B/8B/9E Hex)
Receive Side ZBTSI Enable.
0 = ZBTSI disabled
1 = ZBTSI enabled
RSYNC Double–Wide. (note: this bit must be set to zero
when RCR2.4 = 1 or when RCR2.3 = 1)
0 = do not pulse double wide in signaling frames
1 = do pulse double wide in signaling frames
RSYNC Mode Select. (A Don’t Care if RSYNC is
programmed as an input)
0 = frame mode (see the timing in Section 24)
1 = multiframe mode (see the timing in Section 24)
RSYNC I/O Select. (note: this bit must be set to zero when
CCR1.2 = 0)
0 = RSYNC is an output
1 = RSYNC is an input (only valid if elastic store enabled)
Receive Side D4 Yellow Alarm Select.
0 = zeros in Bit 2 of all channels
1 = a one in the S–bit position of frame 12
PCVCR Fs–Bit Error Report Enable.
0 = do not report bit errors in Fs–bit position; only Ft bit
position
1 = report bit errors in Fs–bit position as well as Ft bit
position
Multiframe Out of Sync Count Register Function Select.
0 = count errors in the framing bit position
1 = count the number of multiframes out of sync
RSM
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RSIO
RD4YM
FSBE
MOSCRF
(LSB)