DS21Q42T Maxim Integrated Products, DS21Q42T Datasheet - Page 30

• 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

TCR2: TRANSMIT CONTROL REGISTER 2 (Address=36 Hex)
Table 6-1. OUTPUT PIN TEST MODES
TEST 1
SYMBOL
(MSB)
TEST1
TD4YM
TZBTSI
TB7ZS
TEST1
TEST0
TSDW
—
—
TSIO
TSM
0
0
1
1
TEST0
TEST 0
POSITION
—
—
0
1
0
1
TCR2.7
TCR2.6
TCR2.5
TCR2.4
TCR2.3
TCR2.2
TCR2.1
TCR2.0
TZBTSI
Operate normally
Force all of the selected framer’s output pins 3–state (excludes other
Framers I/O pins and parallel port pins)
Force all of the selected framer’s output pins low (excludes other
Framers I/O pins and parallel port pins)
Force all of the selected framer’s output pins high (excludes other framers
I/O pins and parallel port pins)
NAME AND DESCRIPTION
Test Mode Bit 1 for Output Pins. See Table 6–1.
Test Mode Bit 0 for Output Pins. See Table 6–1.
Transmit Side ZBTSI Enable.
0 = ZBTSI disabled
1 = ZBTSI enabled
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
TSYNC Mode Select.
0 = frame mode (see the timing in Section 20)
1 = multiframe mode (see the timing in Section 20)
TSYNC I/O Select.
0 = TSYNC is an input
1 = TSYNC is an output
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
Transmit Side Bit 7 Zero Suppression Enable.
0 = no stuffing occurs
1 = Bit 7 force to a one in channels with all zeros
TSDW
30 of 116
AFFECT ON OUTPUT PINS
TSM
TSIO
TD4YM
TB7ZS
(LSB)