T8207 Datasheet, PDF (100/158 Pages) Agere Systems – ATM Interconnect

CelXpres T8207
ATM Interconnect
Advance Data Sheet
September 2001
14 Registers (continued)
Table 60. UTOPIA Configuration (UCF) (0114h)
Name
hec_mask
addr_match
Reserved
Bit Pos.
7:0
12:8
15:13
Type
RW
RW
RO
Reset
Description
55h Header Error Control (HEC) Mask. An exclusive-OR function is
performed on these bits and the HEC value received from the
UTOPIA bus before the HEC is checked for error. Also, an exclu-
sive-OR function is performed on these bits and the HEC value
calculated before it is transmitted on the UTOPIA bus. Note that a
value of zero will not change the HEC value, and a value of FFh
will invert the HEC value.
0 Address Match. These bits represent the UTOPIA address of the
T8207 in level 2 UTOPIA multi-PHY mode. These bits are only
used when the T8207 is configured as a PHY.
0 Reserved.
Table 61. Main Configuration 3 (MCF3) (0116h)
Name
cb_req_to
gfc_value
gfc_insert_en
Reserved
Bit Pos.
7:0
11:8
12
15:13
Type
RW
RW
RW
RO
Reset
Description
0 Cell Bus Request Time-Out. These bits determine the number of
frames that a cell bus request may be present before the cell bus
grant time-out (cb_grnt_to) status bit is set.
0 Generic Flow Control (GFC) Value. These are the bits inserted in
the GFC field of the TX UTOPIA outgoing cells when the GFC
insert feature is enabled.
0 GFC Insert Enable. If this bit is ‘1,’ the gfc_value will be inserted
in all cells transmitted to the UTOPIA bus.
0 Reserved.
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