DS21FF44 Maxim Integrated Products, DS21FF44 Datasheet - Page 97

• Manufacturer Part Number: DS21FF44
• Description: IC FRAMER E1 4X4 16CH 300-BGA
• Manufacturer: Maxim Integrated Products

Specifications of DS21FF44

• Controller Type: E1 Framer
• Interface: Parallel/Serial
• Voltage - Supply: 2.97 V ~ 3.63 V
• Current - Supply: 300mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 300-BGA
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Figure 22-8. TRANSMIT SIDE BOUNDARY TIMING (With Elastic Store
Disabled)
TPOS, TNEG
Figure 22-9. TRANSMIT SIDE 1.544MHz BOUNDARY TIMING (With Elastic
Store Enabled)
TCHBLK
TSYSCLK
TCHCLK
TSSYNC
TCHCLK
TCHBLK
TSER
TSYNC
TSYNC
TLCLK
TSER
TLINK
TSIG
TCLK
1
Notes:
1. TCHBLK is programmed to block channel 23
2. The F-bit position is ignored by the DS2154
1
2
3
4
5
5
Notes:
1. There is a 5 TCLK delay from TSER to TPOS and TNEG
2. TSYNC is in the input mode (TCR1.0 = 0)
3. TSYNC is in the output mode (TCR1.0 = 1)
4. TCHBLK is programmed to block channel 2
5. TLINK is programmed to source the Sa4 bits
6. The signaling data at TSIG during channel 1 is normally overwritten in the transmit formatter with
the CAS multiframe alignment nibble (0000)
7. Shown is a non-align frame boundary
MSB
B
C
Don't Care
CHANNEL 23
LSB
D
CHANNEL 32
Si
1
A
CHANNEL 1
CHANNEL 1
LSB MSB
Sa4
Sa5
LSB
Sa6
Si
Note 6
Don't Care
Sa7
CHANNEL 24
1
Sa8
A
97 of 117
CHANNEL 1
MSB
Sa4
Sa5
Sa6
CHANNEL 2
CHANNEL 2
LSB
Sa7 Sa8
F-Bit
A
MSB
MSB
CHANNEL 1
B
C
LSB
D
MSB