2 data transfer functions, 1 urom_movedp0, 2 urom_movedp0inc – Maxim Integrated MAXQ622 User Manual
Page 240: 3 urom_movedp0dec, 17 .2 data transfer functions -4
MAXQ612/MAXQ622 User’s Guide
17-4
Maxim Integrated
17.2 Data Transfer Functions
17.2.1 UROM_moveDP0
Notes:
• Before calling this function, DPC should be set appropriately to configure DP[0] for byte or word mode.
• The address passed to this function should be based on the data memory mapping for the utility ROM, as shown
in Figure 2-4 and Figure 2-5 . When a byte mode address is used, CDA0 must be set appropriately to access either
the upper or lower half of program flash/ROM memory .
• This function automatically refreshes the data pointer before reading the byte/word value.
17.2.2 UROM_moveDP0inc
Notes:
• Before calling this function, DPC should be set appropriately to configure DP[0] for byte or word mode.
• The address passed to this function should be based on the data memory mapping for the utility ROM, as shown
in Figure 2-4 and Figure 2-5 . When a byte mode address is used, CDA0 must be set appropriately to access either
the upper or lower half of program flash/ROM memory .
• This function automatically refreshes the data pointer before reading the byte/word value.
17.2.3 UROM_moveDP0dec
Notes:
• Before calling this function, DPC should be set appropriately to configure DP[0] for byte or word mode.
• The address passed to this function should be based on the data memory mapping for the utility ROM, as shown
in Figure 2-4 and Figure 2-5 . When a byte mode address is used, CDA0 must be set appropriately to access either
the upper or lower half of program flash/ROM memory .
• This function automatically refreshes the data pointer before reading the byte/word value.
Function:
UROM_moveDP0
Summary:
Reads the byte/word value pointed to by DP[0] .
Inputs:
DP[0]: Address to read from .
Outputs:
GR: Data byte/word read .
Destroys:
None .
Function:
UROM_moveDP0inc
Summary:
Reads the byte/word value pointed to by DP[0], then increments DP[0] .
Inputs:
DP[0]: Address to read from .
Outputs:
GR: Data byte/word read .
DP[0] is incremented .
Destroys:
None .
Function:
UROM_moveDP0dec
Summary:
Reads the byte/word value pointed to by DP[0], then decrements DP[0] .
Inputs:
DP[0]: Address to read from .
Outputs:
GR: Data byte/word read .
DP[0] is decremented .
Destroys:
None .