mpc823rg Freescale Semiconductor, Inc, mpc823rg Datasheet - Page 876

• Manufacturer Part Number: mpc823rg
• Description: Mpc823 Powerquicc Integrated Communications Processor For Portable Systems
• Manufacturer: Freescale Semiconductor, Inc

Communication Processor Module
16.11.8.2 SMCx GCI PARAMETER RAM MEMORY MAP. The SMCx GCI parameter
RAM area begins at the same offset from each SMCx base area. The SMCx in GCI mode
has a very different parameter RAM memory map than the SMCx in UART or transparent
mode. In GCI mode, the general-purpose parameter RAM contains the buffer descriptors,
instead of pointers, to the buffer descriptors. You can see the difference when you compare
Table 16-38 with Table 16-36. The SMCx in GCI mode contains no protocol-specific
parameter RAM.
OFFSET + 0
NOTE: You are only responsible for initializing the items in bold.
• M_RXBD—The SMCx monitor channel receive buffer descriptor is used by the
NOTE:
communication processor module to report information about the monitor channel
receive byte.
E—Empty
When a serial management controller uses the monitor channel protocol, it waits until
the core sets this bit before acknowledging the monitor channel data.
SMCx Base + 0C
SMCx Base + 00
SMCx Base + 02
SMCx Base + 04
SMCx Base + 06
SMCx Base + 08
SMCx Base + 0E
SMCBase + 0A
0 =
1 =
ADDRESS
You are only responsible for initializing the items in bold.
SMCx Base = (IMMR & 0xFFFF0000) + 0x3E80 (SMC1) and 0x3F80 (SMC2).
0
E
The communication processor module clears this bit to indicate that the data
byte associated with this buffer descriptor is now available to the core.
The core sets this bit to indicate that the data byte associated with this buffer
descriptor has been read.
1
L
Table 16-38. SMCx GCI Parameter RAM Memory Map
RE
2
Freescale Semiconductor, Inc.
CI_RXBD
CI_TXBD
M_RXBD
M_TXBD
For More Information On This Product,
Temp1
Temp2
Temp3
Temp4
MS
NAME
3
MPC823 REFERENCE MANUAL
4
Go to: www.freescale.com
RESERVED
5
Half-word
Half-word
Half-word
Half-word
Half-word
Half-word
Half-word
Half-word
6
WIDTH
7
8
Monitor Channel RX Buffer Descriptor
Monitor Channel TX Buffer Descriptor
9
Circuit Interface Channel
Circuit Interface Channel
10
RX Buffer Descriptor
TX Buffer Descriptor
DESCRIPTION
11
DATA
12
13
MOTOROLA
14
15