CY8CTMG200-32LQXI Datasheet, PDF (260/309 Pages) Cypress Semiconductor – Technical Reference Manual (TRM)

PRTxDM1
1,01h
21.4.2
PRTxDM1
Port Drive Mode Bit Registers 1
Individual Register Names and Addresses:
PRT0DM1 : 1,01h
PRT4DM1 : 1,11h
PRT1DM1 : 1,05h
PRT2DM1 : 1,09h
1,01h
PRT3DM1 : 1,0Dh
7
6
5
4
3
2
1
0
Access : POR
RW : FF
Bit Name
Drive Mode 1[7:0]
This register is one of three registers where the combined value determines the unique drive mode of each bit in a GPIO port.
In register PRTxDM1 there are four possible drive modes for each port pin. Two mode bits are required to select one of these
modes, and these two bits are spread into two different registers (PRTxDM1 and PRTxDM0 on page 259). The bit position of
the effected port pin (for example, Pin[2] in Port 0) is the same as the bit position of each of the two Drive Mode register bits
that control the drive mode for that pin (for example, bit[2] in PRT0DM0 and bit[2] in PRT0DM1). The two bits from the two
registers are treated as a group. These are referred to as DM1 and DM0, or together as DM[1:0].
All drive mode bits are shown in the sub-table below ([10] refers to the combination (in order) of bits in a given bit position);
however, this register only controls the most significant bit (MSb) of the drive mode.
The upper nibble of the PRT4DM1 register returns the last data bus value when read. You need to mask it off before using
this information. For additional information, refer to the Register Definitions on page 59 in the GPIO chapter.
Bit
Name
Description
7:0
Drive Mode 1[7:0]
Bit 1 of the drive mode, for each of 8-port pins, for a GPIO port.
[10] Pin Output High Pin Output Low Notes
00b Resistive
Strong
01b Strong
Strong
10b High Z
High Z
Reset state. Digital input disabled for zero power.
11b High Z
Strong
I2C compatible mode. For digital inputs, use this
mode with data bit (PRTxDR register) set high.
Note A bold digit in the table above signifies that the digit is used in this register.
260
PSoC CY8CTMG20x and CY8CTST200 TRM, Document No. 001-53603 Rev. *C
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