ISP1362EE/01 PHILIPS [NXP Semiconductors], ISP1362EE/01 Datasheet - Page 24

• Manufacturer Part Number: ISP1362EE/01
• Description: Single-chip Universal Serial Bus On-The-Go controller
• Manufacturer: PHILIPS [NXP Semiconductors]

Philips Semiconductors
9397 750 12337
Product data
9.5.1 PIO access to the buffer memory by using direct addressing
9.5 PIO access to the buffer memory
The following is a sample code for PIO access to internal control registers:
unsigned long read_reg32(unsigned char reg_no)
{
}
void write_reg32(unsigned char reg_no, unsigned long data2write)
{
}
unsigned int read_reg16(unsigned char reg_no)
{
}
void write_reg16(unsigned char reg_no, unsigned int data2write)
{
}
The buffer memory in the ISP1362 can be addressed using either the direct
addressing method or the indirect addressing method.
This method uses the HcDirectAddressLength register to specify two parameters
required to randomly access the ISP1362 buffer memory (total of 4096 bytes). These
two parameters are:
unsigned int result_l,result_h;
unsigned long result;
outport(hc_com, reg_no); // Command phase
result_l=inport(hc_data); // Data phase
result_h=inport(hc_data); // Data phase
result = result_h;
result = result<<16;
result = result+result_l;
return(result);
unsigned int low_word;
unsigned int hi_word;
low_word=data2write&0x0000FFFF;
hi_word=(data2write&0xFFFF0000)>>16;
outport(hc_com,reg_no|0x80); // Command phase
outport(hc_data,low_word); // Data phase
outport(hc_data,hi_word); // Data phase
unsigned int result;
outport(hc_com, reg_no); // Command phase
result=inport(hc_data); // Data phase
return(result);
outport(hc_com,reg_no|0x80); // Command phase
outport(hc_data,data2write); // Data phase
Rev. 03 — 06 January 2004
Single-chip USB OTG controller
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
ISP1362
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