象下面这一段语句,这一些定义可以在cs8900a的datasheet里找到地址定义
// Configuration and control registers
#define PP_RxCFG 0x0102 // Rx Bus config
#define PP_RxCTL 0x0104 // Receive Control Register
#define PP_LineCTL 0x0112 // Line Config Register
#define PP_SelfCTL 0x0114 // Self Command Register
// Status and Event Registers
#define PP_RxEvent 0x0124 // Rx Event Register
#define PP_LineST 0x0134 // Line State Register
#define PP_SelfST 0x0136 // Self State register
#define PP_BusST 0x0138 // Bus Status