PEB20256E-V21 Infineon Technologies, PEB20256E-V21 Datasheet - Page 82

• Manufacturer Part Number: PEB20256E-V21
• Description: IC CONTROLLER INTERFACE 388-BGA
• Manufacturer: Infineon Technologies

Specifications of PEB20256E-V21

• Function: Multichannel Network Interface Controller (MUNICH)
• Interface: HDLC, PPP, Serial, TMA
• Voltage - Supply: 3 V ~ 3.6 V
• Current - Supply: 200mA
• Power (watts): 3W
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 388-BBGA
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Number Of Circuits: -
• Other names: PEB20256E-V21; PEB20256E-V21IN

nine interrupt queues can be masked. In this case the interrupt pin INTA is not asserted,
but the interrupt vector is still written into the assigned interrupt queue.
An interrupt queues is a reserved memory locations in system memory. The
MUNICH256 supports up to eight interrupt queues which are organized in form of ring
buffers with a programmable start address and a programmable size per interrupt queue.
Additionally there is one fixed sized command interrupt queue where command
interrupts are stored. The size of this queue is two times 256 DWORDs (Figure 4-14).
•
Figure 4-14
4.7.1.1
Each interrupt vector is 32 bit wide and contains several subfields, which indicate the
interrupt group and depend on the interrupt group the interrupt information. Bit 31 of the
interrupt vector is generally set to ’1’ by the MUNICH256 and allows the system CPU to
clear the bit in order to mark processed interrupts.
Table 4-6
Data Sheet
31
15
1
IQBA+4
IQBA
TYPE(1:0)
30
H
General Interrupt Vector Structure
Channel, Port and System
Interrupt Queue
29
Interrupt Vector IQL*16
Interrupt Queue Structure in System Memory
Interrupt Vector Structure
Interrupt Vector 3
Interrupt Vector 2
Interrupt Vector 1
STYPE(1:0)
28
27
26
QUEUE(2:0)
INT(23:0)
24
82
23
IQBA+4
IQBA
H
Command Interrupt Queue
Note: IV = Interrupt Vector
Channel 255: Transmit Command IV
Channel 255: Receive Command IV
Channel 0: Transmit Command IV
Channel 1: Receive Command IV
Channel 0: Receive Command IV
INT(23:0)
Functional Description
PEB 20256 E
PEF 20256 E
04.2001
16
0