DS21FF44 Maxim Integrated Products, DS21FF44 Datasheet - Page 93

• 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

22.
Figure 22-1. RECEIVE SIDE TIMING
FRAME#
Figure 22-2. RECEIVE SIDE BOUNDARY TIMING (With Elastic Store
Disabled)
RSYNC / RFSYNC
RSYNC /
RFSYNC
RSYNC
RLCLK
RLINK
RPOS, RNEG 1
1
4
2
3
RCHCLK
RCHBLK
Notes:
1. RSYNC in the frame mode (RCR1.6 = 0)
2. RSYNC in the multiframe mode (RCR1.6 = 1)
3. RLCLK is programmed to output just the Sa4 bit
4. RLINK will always output all five Sa bits as well as the rest of the receive data stream
5. This diagram assumes the CAS MF begins with the FAS word
TIMING DIAGRAMS
RLCLK
RLINK
RCLK
RSER
RSIG
14
3
2
Notes:
1. There is a 6 RCLK delay from RPOS, RNEG to RSER
2. RCHBLK is programmed to block channel 2
3. RLINK is programmed to output the Sa4 bit
4. Shown is a non-align frame boundary
5. RSIG normally contains the CAS multiframe alignment nibble (0000) in Channel 1
15 16
MSB
LSB
1
Si
2
CHANNEL 32
CHANNEL 32
3
1
4
A
A
CHANNEL 1
5
Sa4
B
6
Sa5 Sa6 Sa7 Sa8
C
7
LSB
D
8
Si
9
10 11
1
93 of 117
MSB
A
CHANNEL 1
CHANNEL 1
12 13 14
Sa4 Sa5
Sa4
Sa5 Sa6 Sa7 Sa8
Sa5
CHANNEL 2
Sa6
Note 5
15 16
Sa7 Sa8
1
MSB
2
3
LSB
CHANNEL 2
CHANNEL 2
4
5
6