IBM3009K2672
IBM SONET/SDH Framer
Static Configuration Registers
Common static configuration data, providing control signals that are distributed to multiple chiplets. This is set
once by the GPP before the individual chiplets get enabled and is not changed during normal operation.
9.1: GConTx [3858 H]
GContTx: Container handling in transmit macros.
Signal Name
Bits
Access
Default
Description
GContTx1(1:0)
GContTx2(1:0)
GContTx3(1:0)
1:0
3:2
5:4
R/W
R/W
R/W
00
00
00
Set ATM, Loop or TB mode for each SONET/SDH macro in transmit direc-
tion:
00: SONET/SDH macro in ATM/PPP mode (C4).
01: SONET/SDH macro in Loop mode (VC-4).
10: SONET/SDH macro in TB mode (AU-4). In this mode, transmit
retiming is not performed. Therefore, an AU-4 (i.e., VC-4 with
pointers) must be provided to the SONET/SDH framer’s transmit
Telecom Bus. The TXCFRM and either the TXCCLK or TXCCLK
signals must be used to source data into the transmit Telecom
Bus. See Telecom Bus Interface on page 19.
GContTx4(1:0)
7:6
R/W
00
11: SONET/SDH macro in TB mode (VC-4). In this mode, transmit
retiming is performed.
9.2: GConRx [3859 H]
GContRx: Container handling in receive macros.
Signal Name
GContRx1(1:0)
GContRx2(1:0)
GContRx3(1:0)
Bits
1:0
3:2
5:4
Access
R/W
Default
00
Description
Set ATM, Loop or TB mode for each SONET/SDH macro in receive direc-
tion:
R/W
00
00: SONET/SDH macro in ATM/PPP mode (C4).
01: SONET/SDH macro in Loop mode (VC-4).
10: SONET/SDH macro in TB mode.
11: Do not use.
R/W
00
GContRx4(1:0)
7:6
R/W
00
ssframer.01
8/27/99
Register Descriptions
Page 129 of 279
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