DS21Q55 Maxim Integrated Products, DS21Q55 Datasheet - Page 216

• Manufacturer Part Number: DS21Q55
• Description: IC TXRX QUAD T1/E1/J1 SCT 256BGA
• Manufacturer: Maxim Integrated Products

Specifications of DS21Q55

• Function: Transceiver
• Interface: E1, J1, T1
• Number Of Circuits: 4
• Voltage - Supply: 3.14 V ~ 3.47 V
• Current - Supply: 75mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 256-BGA
• Includes: BERT Generator and Detector, Dual HDLC Controllers
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Power (watts): -

Figure 31-17. G.802 Timing, E1 Mode Only
Note 1: RCHBLK or TCHBLK programmed to pulse high during time slots 1 through 15, 17 through 25, and bit 1 of time slot 26.
Figure 31-18. Transmit-Side Timing
Note 1: TSYNC in frame mode (IOCR1.2 = 0).
Note 2: TSYNC in multiframe mode (IOCR1.2 = 1).
Note 3: TLINK is programmed to source just the Sa4 bit.
Note 4: This diagram assumes both the CAS MF and the CRC4 MF begin with the TAF frame.
Note 5: TLINK and TLCLK are not synchronous with TSSYNC.
RCHCLK
TCHCLK
RCHBLK
TCHBLK
RSYNC
TSYNC
TS #
FRAME#
TSYNC
TLCLK
TSYNC
TSSYNC
TLINK
31 32
3
3
2
1
0
14 15 16
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
1
2
3
4
5
6
7
RCHCLK / TCHCLK
RCHBLK / TCHBLK
RCLK / RSYSCLK
TCLK / TSYSCLK
8
RSER / TSER
216 of 237
9 10
11 12
13 14 15 16 1
CHANNEL 25
2
LSB MSB
3
4
5
6
CHANNEL 26
7
8
0
9 10
1 2