
34
Agere Systems Inc.
Data Sheet
May 2001
155/622/2488 Mbits/s Data Interface
TDAT042G5 SONET/SDH
Pin Information
(continued)
Table 5
.
Pin Descriptions
—
Enhanced UTOPIA Interface Signals
(continued)
Pin
AE32
AF35
AF34
AF33
AF32
AF31
AG35
AG34
AG33
AG32
AG31
AH34
AH33
AH32
AH31
AJ34
Symbol
RxDATA[B][15]
RxDATA[B][14]
RxDATA[B][13]
RxDATA[B][12]
RxDATA[B][11]
RxDATA[B][10]
RxDATA[B][9]
RxDATA[B][8]
RxDATA[B][7]
RxDATA[B][6]
RxDATA[B][5]
RxDATA[B][4]
RxDATA[B][3]
RxDATA[B][2]
RxDATA[B][1]
RxDATA[B][0]
Type
3.3 V
I/O
O
Name/Description
Receive Data Channel B.
Used to transport data out of the
UTOPIA PHY Rx block. RxDATA[B][15:0] is only valid when
RxENB[B] is asserted, and is updated on the rising edge of
RxCLK[B]. Note that RxDATA[B][15:0] is used in various UTO-
PIA modes. In U2 or U2+, all 16 bits are valid. In U3 or U3+ (8-
bit mode), only bits 15 to 8 are valid.
In U3 or U3+ (32-bit mode), RxDATA[B][15:0] forms the least sig-
nificant 16 bits of the combined data bus (bits 15 to 0), and
RxDATA[A][15:0] forms the most significant 16 bits of the com-
bined data bus (bits 31 to 16). In this mode, channel B port must
be provisioned to idle.
In this mode, RxDATA[B][15:0] is valid when RxENB[A] is
asserted, and RxDATA[B][15:0] is updated on the rising edge of
RxCLK[A].
Note:
[15:0] refers to a 16-bit data bus (15 = MSB, 0 = LSB).
Receive Data Channel C.
Used to transport data out of the
UTOPIA PHY Rx block. RxDATA[C][15:0] is only valid when
RxENB[C] is asserted, and is updated on the rising edge of
RxCLK[C]. Note that RxDATA[C][15:0] is used in various UTO-
PIA modes. In U2 or U2+, all 16 bits are valid. In U3+ (8-bit
mode), only bits 15 to 8 are valid.
AN25
AP25
AR25
AL24
AM24
AN24
AP24
AR24
AL23
AM23
AN23
AP23
AL22
AM22
AN22
AP22
RxDATA[C][15]
RxDATA[C][14]
RxDATA[C][13]
RxDATA[C][12]
RxDATA[C][11]
RxDATA[C][10]
RxDATA[C][9]
RxDATA[C][8]
RxDATA[C][7]
RxDATA[C][6]
RxDATA[C][5]
RxDATA[C][4]
RxDATA[C][3]
RxDATA[C][2]
RxDATA[C][1]
RxDATA[C][0]
3.3 V
O
In U3 or U3+ (32-bit mode), channel C port must be provisioned
to idle mode.
Note:
[15:0] refers to a 16-bit data bus (15 = MSB, 0 = LSB).