T8207 Datasheet, PDF (91/158 Pages) Agere Systems – ATM Interconnect

Advance Data Sheet
September 2001
CelXpres T8207
ATM Interconnect
14 Registers (continued)
14.2.4 Control Cells
Table 50. Control Cell Receive Direct Memory (CCRXDM) (60h to 93h)
The control cell receive memory may also be accessed from extended memory. See Table 120.
Name
header[31:24]
header[23:16]
header[15:8]
header[7:0]
payload_byte0
payload_byte1
.
.
.
payload_byte46
payload_byte47
Offset Type
00h RO
01h
02h
03h
04h
05h
.
.
.
32h
33h
Reset
X
Description
These 52 bytes are the control cell received from the
cell bus. This memory space in direct memory is a
shadow of the control cell receive extended memory.
When present, the control cell should be read from
this direct memory space.
Table 51. Control Cell Transmit Direct Memory (CCTXDM) (A0h to D7h)
The control cell transmit memory may also be accessed from extended memory. See Table 121.
Name
cell_bus_routing_header[15:8]
cell_bus_routing_header[7:0]
tandem_routing_header[15:8]
tandem_routing_header[7:0]
header[31:24]
header[23:16]
header[15:8]
header[7:0]
payload_byte0
payload_byte1
.
.
.
payload_byte46
payload_byte47
Offset
00h
01h
02h
03h
04h
05h
06h
07h
08h
09h
.
.
.
36h
37h
Type Reset
Description
RW X These 56 bytes are the cell routing header, the tan-
dem routing header, and the control cell to be trans-
mitted onto the cell bus. This memory space in direct
memory is a shadow of the control cell transmit
extended memory. A control cell to be transmitted
should be written to this direct memory space.
Agere Systems Inc.
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