參數(shù)資料
型號： ISP1362EE,551
廠商： NXP SEMICONDUCTORS
元件分類： 總線控制器
英文描述： UNIVERSAL SERIAL BUS CONTROLLER, PBGA64
封裝： 6 X 6 MM, 0.80 HEIGHT, PLASTIC, MO-195, SOT-543-1, TFBGA-64
文件頁數(shù)： 70/152頁
文件大?。?/td> 677K
代理商： ISP1362EE,551
ISP1362_5
NXP B.V. 2007. All rights reserved.
Product data sheet
Rev. 05 — 8 May 2007
24 of 152
NXP Semiconductors
ISP1362
Single-chip USB OTG Controller
void Set_DirAddrLen(unsigned int data_length,unsigned int addr)
{
unsigned long RegData = 0;
RegData =(long)(addr&0x7FFF);
RegData|=(((long)data_length)<<16);
write_reg32(HcDirAddrLen,RegData);
}
After the proper value is written to the HcDirectAddressLength register, data is accessible
from the HcDirectAddressData register (called as HcDirAddr_Port in the following sample
code). A sample code to write word_size bytes of data from *w_ptr to the memory
locations of the ISP1362 buffer starting from the address start_addr is as follows:
void direct_write(unsigned int *w_ptr,unsigned int start_addr,unsigned int word_size)
{
unsigned int cnt = 0;
Set_DirAddrLen(word_size*2,start_addr);
outport(hc_com,HcDirAddr_Port|0x80); // hc_com is system address of
// HC command port
do
{
outport(hc_data,*(w_ptr+cnt)); // hc_data is system address of
// HC data port
cnt++;
}
while(cnt<word_size);
}
Direct addressing allows fast and random access to any location within the ISP1362
memory. Your program, however, needs the address location of each buffer area to
access them.
8.5.2 PIO access to the buffer memory by using indirect addressing
Indirect addressing is the addressing method that is compatible with NXP ISP1161
addressing mode. This method uses a unique data port for each buffer memory area
(ATL, INTL, ISTL0 and ISTL1). These four data areas share the HcTransferCounter
register that is used to indicate the number of bytes to be transferred.
A sample code to write an array at *a_ptr into the ATL memory area with word_size as the
word size is given as follows:
void write_atl(unsigned int *a_ptr, unsigned int word_size)
{
int cnt;
write_reg16(HcTransferCnt,word_size*2);
outport(hc_com,HcATL_Port|0x80);
// hc_com is system address of HC
// command port
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