EP7211 Datasheet, PDF (84/166 Pages) Cirrus Logic – HIGH-PERFORMANCE ULTRA-LOW-POWER SYSTEM-ON-CHIP WITH LCD CONTROLLER

EP7211
High-Performance Ultra-Low-Power System-on-Chip with LCD Controller
5.1.1 PADR Port A Data Register
ADDRESS: 0x8000.0000
Values written to this 8-bit read/write register will be output on Port A pins if the corresponding data
direction bits are set high (port output). Values read from this register reflect the external state of Port
A, not necessarily the value written to it. All bits are cleared by a system reset.
5.1.2 PBDR Port B Data Register
ADDRESS: 0x8000.0001
Values written to this 8-bit read/write register will be output on Port B pins if the corresponding data
direction bits are set high (port output). Values read from this register reflect the external state of Port
B, not necessarily the value written to it. All bits are cleared by a system reset.
5.1.3 PDDR Port D Data Register
ADDRESS: 0x8000.0003
Values written to this 8-bit read/write register will be output on Port D pins if the corresponding data
direction bits are set low (port output). Values read from this register reflect the external state of Port
D, not necessarily the value written to it. All bits are cleared by a system reset.
5.1.4 PADDR Port A Data Direction Register
ADDRESS: 0x8000.0040
Bits set in this 8-bit read/write register will select the corresponding pin in Port A to become an
output, clearing a bit sets the pin to input. All bits are cleared by a system reset.
5.1.5 PBDDR Port B Data Direction Register
ADDRESS: 0x8000.0041
Bits set in this 8-bit read/write register will select the corresponding pin in Port B to become an
output, clearing a bit sets the pin to input. All bits are cleared by a system reset.
5.1.6 PDDDR Port D Data Direction Register
ADDRESS: 0x8000.0043
Bits cleared in this 8-bit read/write register will select the corresponding pin in Port D to become an
output, setting a bit sets the pin to input. All bits are cleared by a system reset so that Port D is output
by default.
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Register Descriptions
DS352PP3
JUL 2001