mpc823rg Freescale Semiconductor, Inc, mpc823rg Datasheet - Page 602

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

Communication Processor Module
16.7.7.3 GCI INTERFACE PROGRAMMING EXAMPLE. Assuming SCC2 is connected to
the D channel, SMC2 to the B1 channel, and SMC1 to the C/I channels, the initialization
sequence is as follows:
1. Program the serial interface RAM. Write all entries that are not used with 0x0001, set
2. SIMODE = 0x0000c000. SCC2 is connected to the time-slot assigner. SCC2 supports
3. The SICR equals 0x000040C0. SCC2 is connected to the time-slot assigner.
4. In the PAODR, bit 9 is set to 1. Configure L1TXDA to be an open-drain output.
5. In the PAPAR, bits 9, 8, and 7 are set to 1. Configure L1TXDA, L1RXDA, and
6. In the PADIR, bits 9 and 8 are set to 1 and in the PADIR, bit 7 is set to 0. Configure
7. In the PCPAR, bit 4 is set to 1. Configure L1RSYNCA.
8. The SIGMR equals 0x04.Enable TDMA (one static TDM).
9. The SICMR is not used.
the LST bit, and disable the routing function.
the grant mechanism since it is on the D channel.
L1RCLKA.
L1TXDA, L1RXDA, and L1RCLKA.
NUMBER
ENTRY
1
2
3
4
5
6
7
8
Note: Since GCI requires the same routing for both receive and transmit, an exact
Note: If SCIT mode is not used, delete the last three entries of the serial interface RAM
SWTR
0
0
0
0
0
0
0
0
duplicate of the above entries must be written to both the receive and transmit
sections of the serial interface RAM beginning at addresses 0 and 128,
respectively.
and set the LST bit in the new last entry.
Freescale Semiconductor, Inc.
For More Information On This Product,
SSEL
0000
0001
0000
0000
0000
0000
0000
0000
MPC823 REFERENCE MANUAL
Go to: www.freescale.com
CSEL
110
000
101
010
101
000
000
111
0000
0000
0000
0001
0101
0110
0001
0000
CNT
RAM WORD
BYT
1
1
1
0
0
1
0
0
LST
0
0
0
0
0
0
0
1
6 Bits SMC1 (I+A+E)
8 Bits SMC2 (B1)
8 Bits SMC1 (M)
2 Bits SCC2 (D)
Ext Device (B2)
DESCRIPTION
Skip 7 Bytes
D Grant Bit
Skip 2 Bits
MOTOROLA