Pradeep,
The primary purpose of TSIP is designed for telecom serial data streams. And the standard data rate is 8.192 Mbps with 8 links active and all 1024 time slots are enabled.
You may try to play with channel bitmap to see if you could disable some time slots to coordinate with your customized data rate. But please note the clock input to TSIP is still required to be 8.192MHz or 16.384MHz with frame sync input to be 8KHz (1/125us).