MK50H28N ST Microelectronics, Inc., MK50H28N Datasheet - Page 12

• Manufacturer Part Number: MK50H28N
• Description: Multi Logical Link Frame Relay Controller
• Manufacturer: ST Microelectronics, Inc.

MK50H28
Figure 3: MK50H28 Memory Management Structure
12/64
CSR2, CSR3
PRIORITY DLCI
BLOCK
PTR TO INIT
MODE
TIMER VALUES
PTR TO CT
PTR TO ALT
PTR TO TINT DR
PTR TO STATUS
LMI ERROR
COUNTERS
PTR TO RINT DR
BUFFER
INIT BLOCK
ACT. CHNL
DLCI 1024
DLCI 8192)
ADDRESS
(DLCI 0
LOOKUP
TABLE
TX INTERRUPT RING
RX INTERRUPT RING
to
or
DESC 0
DESC 1
DESC 127
DESC 0
DESC 1
DESC 127
TX CT Address
Current TX Desc
Service Bit
RX CT Address
Current RX Desc
Service Bit
(1 ENTRY/ACT. CHNL)
CONTEXT
DESC RING PTRS
CONG STATISTICS
DESC RING PTRS
CONG STATISTICS
DLCI / ADDRESS
DLCI / ADDRESS
ACTIVE CHNL. 0
DESC RING PTRS
CONG STATISTICS
ACTIVE CHNL. N
DLCI / ADDRESS
ACTIVE CHNL. 1
STATUS
BUFFER
TABLE
DESC 1
DESC M
DESC 0
DESC 1
DESC Y
DESC 0
DESC 0
DESC 1
DESC N
DESC 0
DESC 1
DESC X
RX RING N
BUFF ADDRESS
BUFF ADDRESS
BUFF SIZE
BUFF MSG CNT
BUFF SIZE
BUFF MSG CNT
BUFF ADDRESS
BUFF SIZE
BUFF MSG CNT
XMIT
RX RING 0
XMIT
BUFF ADDRESS
BUFF SIZE
BUFF MSG CNT
RING N
RING0
DATA
BUFFERS
DATA
BUFFERS
DATA
BUFFERS
BUFF
BUFF
BUFF
BUFF
BUFF
BUFF
BUFF
BUFF
BUFF
M
BUFF
BUFF
BUFF
0
0
1
1
Y
0
N
0
1
1
X