m8260Brg.h
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上传用户:luoyougen
上传日期:2008-05-12
资源大小:23136k
文件大小:4k
源码类别:
VxWorks
开发平台:
C/C++
- /* m8260Brg.h - Motorola MPC8260 Baud Rate Generators header file */
- /* Copyright 1984-1999 Wind River Systems, Inc. */
- /*
- modification history
- --------------------
- 01a,12sep99,ms_ created from m8260Cpm.h, 01d.
- */
- /*
- * This file contains constants for the Baud Rate Generators (BRGs)
- * in the Motorola MPC8260 PowerQUICC II integrated Communications
- * Processor
- */
- #ifndef __INCm8260Brgh
- #define __INCm8260Brgh
- #ifdef __cplusplus
- extern "C" {
- #endif
- #ifndef M8260ABBREVIATIONS
- #define M8260ABBREVIATIONS
- #ifdef _ASMLANGUAGE
- #define CAST(x)
- #else /* _ASMLANGUAGE */
- typedef volatile UCHAR VCHAR; /* shorthand for volatile UCHAR */
- typedef volatile INT32 VINT32; /* volatile unsigned word */
- typedef volatile INT16 VINT16; /* volatile unsigned halfword */
- typedef volatile INT8 VINT8; /* volatile unsigned byte */
- typedef volatile UINT32 VUINT32; /* volatile unsigned word */
- typedef volatile UINT16 VUINT16; /* volatile unsigned halfword */
- typedef volatile UINT8 VUINT8; /* volatile unsigned byte */
- #define CAST(x) (x)
- #endif /* _ASMLANGUAGE */
- #endif /* M8260ABBREVIATIONS */
- #ifndef M8260_32_WR
- #define M8260_32_WR(addr, value) (* ((UINT32 *)(addr)) = ((UINT32) (value)))
- #endif
- #ifndef M8260_16_WR
- #define M8260_16_WR(addr, value) (* ((UINT16 *)(addr)) = ((UINT16) (value)))
- #endif
- #ifndef M8260_8_WR
- #define M8260_8_WR(addr, value) (* ((UINT8 *)(addr)) = ((UINT8) (value)))
- #endif
- #ifndef M8260_32_RD
- #define M8260_32_RD(addr, value) ((value) = (* (UINT32 *) ((UINT32 *)(addr))))
- #endif
- #ifndef M8260_16_RD
- #define M8260_16_RD(addr, value) ((value) = (* (UINT16 *) ((UINT16 *)(addr))))
- #endif
- #ifndef M8260_8_RD
- #define M8260_8_RD(addr, value) ((value) = (* (UINT8 *) ((UINT8 *)(addr))))
- #endif
- #ifndef M8260_NTH_REG_WR_32
- #define M8260_NTH_REG_WR_32(regVal, regBase, offsetNext, n)
- {
- VINT32 *pReg = (VINT32 *)
- (immrVal +
- regBase +
- ((n-1) * offsetNext));
- M8260_32_WR(pReg, regVal);
- }
- #endif
- #define M8260_BRGC_WR(value, brgc)
- M8260_NTH_REG_WR_32(value,
- M8260_BRGC_BASE,
- M8260_BRGC_OFFSET_NEXT_BRGC,
- brgc)
- /*
- * MPC8260 internal register/memory map (section 17 of prelim. spec)
- * note that these are offsets from the value stored in the IMMR
- * register. Also note that in the MPC8260, the IMMR is not a special
- * purpose register, but it is memory mapped.
- */
- /* Baud Rate Generators */
- #define M8260_BRGC_BASE 0x000119F0
- #define M8260_BRGC_OFFSET_NEXT_BRGC 0x00000004
- #define M8260_BRGC_RD(regVal, brg)
- {
- VINT32 *pReg = (VINT32 *)
- (immrVal +
- M8260_BRGC_BASE +
- ((brg - 1) * M8260_BRGC_OFFSET_NEXT_BRGC));
- M8260_32_RD(pReg, regVal);
- }
- #define M8260_BRGC_SET_BITS(bitmap)
- {
- UINT32 regVal;
- VINT32 *pReg = (VINT32 *)
- (immrVal +
- M8260_BRGC_BASE +
- (scc * M8260_BRGC_OFFSET_NEXT_BRGC));
- M8260_32_RD(pReg, regVal);
- M8260_32_WR(pReg, (regVal | bitmap));
- }
- /* macros used in the configuration registers */
- #define M8260_BRGC_CD_MASK 0x00001FFE /* clock divider mask */
- #define M8260_BRGC_CD_SHIFT 0x1 /* to shift CD into position */
- #define M8260_BRGC_RST 0x00020000 /* Reset BRG */
- #define M8260_BRGC_EN 0x00010000 /* Enable BRG count */
- #define M8260_BRGC_EXTC_BRGCLK 0x0 /* clock comes from BRGCKL */
- #define M8260_BRGC_EXTC_CLK3_9 0x1 /* clock comes from pin 3 or 9 */
- #define M8260_BRGC_EXTC_CLK5_15 0x2 /* clock comes from pin 5 or 15 */
- #define M8260_BRGC_EXTC_MASK 0x0000C000 /* External Clock Source Mask */
- #define M8260_BRGC_EXTC_SHIFT 0xE /* shift EXTC 14 bits to position */
- #define M8260_BRGC_ATB 0x00002000 /* 1 = Autobaud on Rx */
- /* 0 = normal operation */
- #define M8260_BRGC_DIV16 0x00000001 /* BRG Clock divide by 16 */
- #ifdef __cplusplus
- }
- #endif
- #endif /* __INCm8260Brgh */