参数资料
型号: MC68MH360VR33LR2
厂商: Freescale Semiconductor
文件页数: 4/158页
文件大小: 0K
描述: IC MPU QUICC 33MHZ 357-PBGA
标准包装: 180
系列: M683xx
处理器类型: M683xx 32-位
速度: 33MHz
电压: 5V
安装类型: 表面贴装
封装/外壳: 357-BBGA
供应商设备封装: 357-PBGA(25x25)
包装: 带卷 (TR)
Chapter 6. QMC Initialization
struct
descs {
rxbdq recvbd0;
/* receive buffer 0 */
txbdq xmitbd0;
/* transmit buffer 0 */
} chbd[4];
/* 4 sets of chan descriptors */
static char *poem[6];
/* poem area */
short linecntr;
/* line counter */
struct intrpten {
unsigned V:1;
/* entry valid bit */
unsigned W:1;
/* entry wrap bit */
unsigned NID:1;
/* not-an-idle has occurred */
unsigned IDL:1;
/* an idle has occurred */
unsigned :1;
unsigned CHNMBR:5;
/* channel number */
unsigned MRF:1;
/* maximum frame length violation */
unsigned UN:1;
/* Tx underrun */
unsigned RXF:1;
/* receive frame */
unsigned BSY:1;
/* frame discarded, no buffers */
unsigned TXB:1;
/* buffer transmitted */
unsigned RXB:1;
/* receive buffer closed */
}
intrpt[10];
/* interrupt table */
short recvcnt,xmitcnt,othrcnt = 0;
/* interrupt counters */
main()
{
void SCC1esr();
/* exception service rtn */
int *pvec;
/* exception vector pntr */
char vecblk = 3;
/* vector number block */
char intlvl = 4;
/* interrupt level */
pdpr = (struct dprbase *) (getmbar() & 0xFFFFE000);/*
init
dual-ported
RAM ptr */
pdpr->CICR.VBA2_VBA0 = (unsigned) (vecblk);/* vecs at vec num 0x60-7F */
pdpr->CICR.IRL2_IRL0 = (unsigned) (intlvl);/* CPM interrupts level 4 */
pdpr->CICR.HP4_HP0 = 0x1F;
/* no int priority change */
/* SCdP is zero from reset */
pdpr->CICR.SCcP = 1;
/* SCC2 to SCCC position */
pdpr->CICR.SCbP = 2;
/* SCC3 to SCCB position */
pdpr->CICR.SCaP = 3;
/* SCC4 to SCCA position */
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For More Information On This Product,
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