DS21Q42T Maxim Integrated Products, DS21Q42T Datasheet - Page 28

• 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: Contains lead / RoHS non-compliant

RCR2: RECEIVE CONTROL REGISTER 2 (Address=2C Hex)
(MSB)
RCS
SYMBOL
SYMBOL
MOSCRF
RESYNC
RD4YM
RZBTSI
SYNCE
RSDW
FSBE
RSIO
RSM
RCS
RZBTSI
POSITION
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.
NAME AND DESCRIPTION
Receive Code Select. See Section 11 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 20)
1 = multiframe mode (see the timing in Section 20)
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
(LSB)
MOSCRF