T8207 Datasheet, PDF (137/158 Pages) Agere Systems – ATM Interconnect

Advance Data Sheet
September 2001
CelXpres T8207
ATM Interconnect
14 Registers (continued)
14.3.4 Various Internal Memories
14.3.4.1 Control Cell Memories
Table 120. Control Cell Receive Extended Memory (CCRXEM) (0800h to 0832h)
The control cell receive memory may also be accessed from direct memory. See Table 50.
Name
header[31:16]
header[15:0]
payload_bytes 0—1
.
.
.
payload_bytes 46—47
Offset
00h
02h
04h
.
.
.
32h
Type
RO
Reset
Description
X These 52 bytes are the control cell received from the cell
bus. When present, the control cell may be read from this
extended memory space.
Table 121. Control Cell Transmit Extended Memory (CCTXEM) (0900h to 0936h)
The control cell transmit memory may also be accessed from direct memory. See Table 51.
Name
Offset
cell_bus_routing_header 0
tandem_routing_header 2
header[31:16]
4
header[15:0]
6
payload_bytes 0—1
8
.
.
.
.
.
.
payload_bytes 46—47 36h
Type
RW
Reset
Description
X These 56 bytes are the cell routing header, the tandem rout-
ing header, and the control cell to be transmitted onto the cell
bus. A control cell to be transmitted may be written to this
extended memory space.
Agere Systems Inc.
137