参数资料
型号: DS21FF42
厂商: DALLAS SEMICONDUCTOR
元件分类: Digital Transmission Controller
英文描述: DATACOM, FRAMER, PBGA300
封装: 27 X 27 MM, BGA-300
文件页数: 43/115页
文件大小: 534K
代理商: DS21FF42
DS21FF42/DS21FT42
33 of 115
SYNCE
RCR1.1
Sync Enable.
0 = auto resync enabled
1 = auto resync disabled
RESYNC
RCR1.0
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.
RCR2: RECEIVE CONTROL REGISTER 2 (Address=2C Hex)
(MSB)
(LSB)
RCS
RZBTSI
RSDW
RSM
RSIO
RD4YM
FSBE
MOSCRF
SYMBOL
POSITION
NAME AND DESCRIPTION
RCS
RCR2.7
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)
RZBTSI
RCR2.6
Receive Side ZBTSI Enable.
0 = ZBTSI disabled
1 = ZBTSI enabled
RSDW
RCR2.5
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
RSM
RCR2.4
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)
RSIO
RCR2.3
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)
RD4YM
RCR2.2
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
FSBE
RCR2.1
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
MOSCRF
RCR2.0
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
相关PDF资料
PDF描述
DS21FF42N DATACOM, FRAMER, PBGA300
DS21FT44N DATACOM, FRAMER, PBGA300
DS21FT44 DATACOM, FRAMER, PBGA300
DS21Q352 DATACOM, PCM TRANSCEIVER, PBGA256
DS21Q354 DATACOM, PCM TRANSCEIVER, PBGA256
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