User Manual

Configuration CP382

4.3 Programming Interface

4.3.1 Access Control Logic (Address Decoder)

All the resources of the CP382 are mapped within the 64 kB PCI memory address space which

itself is set in the PCI configuration register BAR0. The port size of all local or backend registers

is 32-bit by default. The address map of the registers is as follows.

Table 4-1: Backend Register Address Map

Base Address Size Function

bar0 + 0x0000 4 K Common Board Registers

0x0400 32 bit g_irq General Interrupt Enable Register

0x0800 32 bit hsr Hardware Status Register

0x0804 32 bit i_pen General Interrupt Pending Register

0x0c00 32 bit hdr Hardware Debug Register

bar0 + 0x1000 4 K Capability ROM, serial EEPROM

0x1000 32 bit r_cmd Command Register

0x1400 32 bit r_ctl Control Register

0x1800 32 bit r_sta Status Register

0x1c00 32 bit r_dat Data Register

bar0 + 0x2000 4 K DigOUT Cluster A

0x2400 32 bit o_ctl_a Output Control Register

0x2800 32 bit o_sta_a Output Status Register

0x2c00 32 bit o_dat_a Output Data Register

bar0 + 0x3000 4 K DigOUT Cluster B

0x3400 32 bit o_ctl_b Output Control Register

0x3800 32 bit o_sta_b Output Status Register

0x3c00 32 bit o_dat_b Output Data Register

bar0 + 0x4000 4 K DigOUT Cluster C

0x4400 32 bit o_ctl_c Output Control Register

0x4800 32 bit o_sta_c Output Status Register

0x4c00 32 bit o_dat_c Output Data Register

bar0 + 0x5000 - 0xffff 44 K Reserved