mcf5272 Freescale Semiconductor, Inc, mcf5272 Datasheet - Page 332

• Manufacturer Part Number: mcf5272
• Description: Mcf5272 Coldfire Integrated Microprocessor User
• Manufacturer: Freescale Semiconductor, Inc

Application Examples
The programming of the P1ICR in the above example is achieved with the following
ColdFire code sequence assuming the equates and init sections as in the previous P1CR
example:
...
move.w
move.w
...
13.6.3 Example 1: ISDN SOHO PBX with Ports 0, 1, 2, and 3
In this example, all four ports are used to connect an external transceiver and six CODECs.
Port 0 and port 1 are programmed in slave mode. An external transceiver, MC145574, is
connected to port 0. Port 1, 2, and 3 are used to connect up to six external PCM CODECs.
13-36
Port 0 only
IE enabled
GCI only
Figure 13-36. Port 1 Interrupt Configuration Register (P1ICR)
P1ICR
0x
#0x8024,d0
d0,P1ICR(A5)
15 14 13 12 11 10
1
0
8
0
0
MCF5272 User’s Manual
0
; port 1 IE and D-channel interrupts enabled
; write value to PnICR
0
0
9
0
8
0
7
0
6
0
2
5
1
4
0
3
0
2
1
4
1
0
0
0
Reserved
DTIE enabled
B2TIE disabled
B1TIE disabled
DRIE enabled
B2RIE disabled
B1RIE disabled
MOTOROLA