参数资料
型号: DS21FT42N
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: 45/115页
文件大小: 534K
代理商: DS21FT42N
DS21FF42/DS21FT42
35 of 115
TCR2: TRANSMIT CONTROL REGISTER 2 (Address=36 Hex)
(MSB)
(LSB)
TEST1
TEST0
TZBTSI
TSDW
TSM
TSIO
TD4YM
TB7ZS
SYMBOL
POSITION
NAME AND DESCRIPTION
TEST1
TCR2.7
Test Mode Bit 1 for Output Pins. See Table 10–1.
TEST0
TCR2.6
Test Mode Bit 0 for Output Pins. See Table 10–1.
TZBTSI
TCR2.5
Transmit Side ZBTSI Enable.
0 = ZBTSI disabled
1 = ZBTSI enabled
TSDW
TCR2.4
TSYNC Double–Wide. (note: this bit must be set to zero
when TCR2.3=1 or when TCR2.2=0)
0 = do not pulse double–wide in signaling frames
1 = do pulse double–wide in signaling frames
TSM
TCR2.3
TSYNC Mode Select.
0 = frame mode (see the timing in Section 24)
1 = multiframe mode (see the timing in Section 24)
TSIO
TCR2.2
TSYNC I/O Select.
0 = TSYNC is an input
1 = TSYNC is an output
TD4YM
TCR2.1
Transmit Side D4 Yellow Alarm Select.
0 = zeros in Bit 2 of all channels
1 = a one in the S–bit position of frame 12
TB7ZS
TCR2.0
Transmit Side Bit 7 Zero Suppression Enable.
0 = no stuffing occurs
1 = Bit 7 force to a one in channels with all zeros
OUTPUT PIN TEST MODES Table 10-1
TEST 1
TEST 0
EFFECT ON OUTPUT PINS
0
operate normally
0
1
force all of the selected framer’s output pins 3–state
(excludes other framers I/O pins and parallel port pins)
1
0
force all of the selected framer’s output pins low (excludes
other framers I/O pins and parallel port pins)
1
force all of the selected framer’s output pins high (excludes
other framers I/O pins and parallel port pins)
相关PDF资料
PDF描述
DS21FF42 DATACOM, FRAMER, PBGA300
DS21FF42N DATACOM, FRAMER, PBGA300
DS21FT44N DATACOM, FRAMER, PBGA300
DS21FT44 DATACOM, FRAMER, PBGA300
DS21Q352 DATACOM, PCM TRANSCEIVER, PBGA256
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