PXB4219 Datasheet, PDF (135/290 Pages) Infineon Technologies AG – IWE8 Interworking Element for 8 E1/T1 Lines

PXB4219 / PXB4220 / PXB4221
Memory Structure
starv_bpslct Starvation byte-pattern select
00 = Select byte-pattern 0, defined in bp10[bp0]
01 = Select byte-pattern 1, defined in bp10[bp1]
10 = Select byte-pattern 2, defined in bp32[bp2]
11 = Select byte-pattern 3, defined in bp32[bp3]
starv_ini Number of starvation octets sent at reassembly buffer initialization.
0.. The actual number of starvation octets sent is starv_ini + 1
2046
2047 An unlimited number of starvation octets will be sent
buff_lsize Logical size of reassembly buffer in octets
auto_reinit_ Automatic reassembly buffer reinitialization at overflow
of
X = If [aal0] =1
0 = µP controlled reassembly buffer initialization
1 = automatic reassembly buffer initialization
auto_reinit_ Automatic reassembly buffer reinitialization at underflow
uf
X = If [aal0] = 1
0 = µP controlled reassembly buffer initialization
1 = automatic reassembly buffer initialization
6.1.4 RAM4: Transmit Port Configuration Extended
Read/write Address 00800_H to 009FF_H
Reset value: Not applicable. RAM must be reset and initialized via SW
Memory size 256K × 32 bits: 8 ports x 32 slots x 1 doubleword
MPADR 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
0 0 0 0 0 0 1 0 0 port_nr
[2:0]
slot[4:0]
RAM4 needs only to be programmed in the case of an “AAL Transmit Reference Slot”
and in case of CAS usage. In all other cases the RAM4 entry is don’t care.
Data Sheet
135
2002-05-06