PXB4221EV34NP Infineon Technologies, PXB4221EV34NP Datasheet - Page 137

• Manufacturer Part Number: PXB4221EV34NP
• Manufacturer: Infineon Technologies

Specifications of PXB4221EV34NP

• Data Rate: 2.048Mbps
• Number Of Channels: 1
• Operating Supply Voltage (typ): 3.3V
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Lead Free Status / RoHS Status: Not Compliant

6.2
The IWE8 requires an external 64K
MPADR[17:0]
3FFFF
30000
2FFFF
28000
27FFF
26040
2603F
26020
2601F
26000
25FFF
24000
23FFF
22000
21FFF
20000
Figure 37
6.2.1
Read/write Address 20000
Reset value: Not applicable. RAM must be reset and initialized via SW
Memory size: 4K
The statistics counters are incremented when the “channel_mode” is active or standby,
and when the corresponding enable bit in the “catm” or “caal” register is set.
RMADR
MPADR
Data Sheet
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
17 16 15 14 13 12 11 10 9
External RAM
Statistics Counters
1
Structure of the IWE8 external RAM
15 14 13 12 11 10
0
64k
32k
8128 x 16
32
32
8k
8k
8k
32 bits: 8 ports x 32 channels x 16 counters.
0
16
16
16
16
16
0
16
16
Segmentation / ATM Receive Buffers
Reassembly / ATM Transmit Buffers
H
0
Statistics Counter thresholds
to 21FFF
Cell Extraction Buffer
Cell Insertion Buffer
Statistics Counters
port_nr
[2:0]
Interrupt queue
32 bit RAM. A 33th bit is added for parity.
H
Timers
9
137
32k
16k
4064 x 32
16
16
4k
4k
4k
PXB 4219E, PXB 4220E, PXB 4221E
8
channel_nr[4:0]
32
32
32
32
32
7
8
32
32
6
7
5
6
4
5
counter_nr[3:0]
3
4
Memory Structure
RMADR[15:0]
FFFF
8000
7FFF
4000
3FFF
3020
301F
3010
300F
3000
2FFF
2000
1FFF
1000
0FFF
0000
2
3
IWE8, V3.4
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
1
2
2003-01-20
0
1
0
0