參數(shù)資料
型號： MC68MH360ZQ33L
廠商： Freescale Semiconductor
文件頁數(shù)： 3/158頁
文件大?。?/td> 0K
描述： IC MPU QUICC 33MHZ 357-PBGA
標(biāo)準(zhǔn)包裝： 44
系列： M683xx
處理器類型： M683xx 32-位
速度： 33MHz
電壓： 5V
安裝類型： 表面貼裝
封裝/外殼： 357-BBGA
供應(yīng)商設(shè)備封裝： 357-PBGA（25x25）
包裝： 托盤
QMC Supplement
Note the ENT bit is initially cleared, but then must be set when the channel is ready to start
transmitting. Similarly, the POL bit is initially cleared, but then must be set each time a
buffer descriptor is enabled to transmit. Example settings are as follows:
ch[x].CHAMR.MODE = 1;
/* select HDLC */
ch[x].CHAMR.IDLM = 0;
/* no idles between frames */
ch[x].CHAMR.ENT = 1;
/* enable channel xmit */
ch[x].CHAMR.CRC = 1;
/* select 32-bit CRC */
ch[x].CHAMR.NOF = 7;
/* 7 flags between frames */
ch[x].CHAMR.POL = 1;
/* enable polling by RISC */
Step 21. Initialize the SCCE register. From reset, SCCEx will be zero requiring no
initialization. However, if required, it can be cleared by writing a 1 in each of the status bits.
See Section 4.1, “Global Error Events,” for more information.
SCCE1 = 0xF;
/* clear all interrupts */
Step 22. Initialize the mask register, SCCMx. Any interrupts which are not used should be
masked in the SCCM register. SCC interrupts should be enabled using the CIMR register,
if required. The CIMR register is dened on page 7-381 of the MC68360 User’s Manual
and page 16-483 of the MPC860 User’s Manual.
SCCM1 = 0xF;
/* enable all interrupts */
CIMR.SCC1 = 1;
/* SCC1 interrupts enabled */
Step 23. Enable the transmitter (ENT bit) and the receiver (ENR bit) in the general SCC
mode register (GSMR).
GSMR_L1.ENR = 1;
/* enable receiver */
GSMR_L1.ENT = 1;
/* enable transmit */
6.2 68MH360 T1 Example
/* This is an example of transmitting and receiving on four
*/
/* HDLC channels in loopback mode. */
/* Equipment : SBC360 Evaluation Board with QUICC32 */
/* (T1MH.C) */
void *const stdout = 0;
/* standard output device */
#include <string.h>
/* string functions */
#include <stdio.h>
/* I/O functions */
#define qmc1
/* SCC1 is multichannel comm */
#include "68360.h"
/* dual-ported RAM equates */
struct dprbase *pdpr;
/* pointer to dual-ported RAM */
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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