cx28500 Mindspeed Technologies, cx28500 Datasheet - Page 113

• Manufacturer Part Number: cx28500
• Description: Cx28500 Multichannel Synchronous Communications Controller
• Manufacturer: Mindspeed Technologies

Table 6-28.
28500-DSH-002-C
11:9
8:6
5
4
3
2
1
Bit
ROOF_EDGE/RTSTB_EDGE
RSIU Port Configuration Register (2 of 3)
RSYNC_EDGE/
RSTUFF_EDGE
RPOLLTH[2:0]
RPORT_TYPE
Field Name
RDAT_EDGE
OOFABT
OOFIEN
Mindspeed Proprietary and Confidential
Mindspeed Technologies
Value
0
0
0
0
1
2
3
4
5
6
7
1
2
3
4
5
6
7
0
1
0
1
1
1
0
1
Unchannelized mode. The user must configure time slot to contain one time slot.
T1 mode. This mode includes some number of time slots and one bit of overhead
coincident with frame or flywheel sync, and that one bit can be masked out.
Nx64—2 TS. The user must configure the time slot map to contain two time slots.
Nx64—3 TS. The user must configure the time slot map to contain three time slots.
Nx64—4 TS mode. The user must configure the time slot map to contain four time slots.
Nx64—The user must configure more than 4 time slots.
Channelized TSBUS mode. The user must configure the time slot map to contain at least
eight time slots.
Reserved
Poll Throttle. Poll at every frame synchronization event. This mechanism can be used to
avoid bus saturation when multiple logical channels are active and idle and waiting for
buffers to service.
Poll at every 2nd frame synchronization event.
Poll at every 4th frame synchronization event.
Poll at every 8th frame synchronization event.
Poll at every 16th frame synchronization event.
Poll at every 64th frame synchronization event.
Poll at every 128th frame synchronization event.
Poll at every 256th frame synchronization event.
Receiver Frame Synchronization/ Receive Stuff Indication—Falling Edge. RSYNC/
RSTUFF input sampled in on falling edge of RCLK.
Receiver Frame Synchronization/ Receive Stuff Indication—Rising Edge. RSYNC/
RSTUFF input sampled in on rising edge of RCLK.
Receiver Data—Falling Edge. RDAT input sampled in on falling edge of RCLK.
Receiver Data—Rising Edge.
Receiver Out Of Frame/ TSBUS Strobe—Falling Edge. ROOF/TSTB input sampled in on
falling edge of RCLK.
Receiver Out Of Frame/ TSBUS Strobe—Rising Edge. ROOF/TSTB input sampled in on
rising edge of RCLK.
OOF Message Processing Enabled. When OOF condition is detected, continue
processing incoming data. SIU should not report about the OOF.
OOF Message Processing Disabled.
Out Of Frame/Frame Recovery Interrupt Disabled.
Out Of Frame/Frame Recovery Interrupt Enabled. If OOF/FREC is detected, generate
Interrupt indicating OOF/FREC.
®
Description
Memory Organization
98