Ameba-D User Manual
User Manual All information provided in this document is subject to legal disclaimers. © REALTEK 2019. All rights reserved.
50
0x4800_0400 ~
0x4800_04FC
31:16
RSVD
N/A
Reserved
15
PAD_BIT_SHUT_DWON
R/W
Pad shut down enable
14
PAD_BIT_SDIO_H3L1
R/W
Pad I/O voltage selection for SDIO pad.
1: 3.3V
0: 1.8V
13
RSVD
N/A
Reserved
12
PAD_BIT_SCHMITT_TRIGGER_EN
R/W
Controls “SMT” signal, used to enable schmitt trigger.
11:10
PAD_BIT_DRIVING_STRENGTH
R/W
For PDA, drives pad {bit[11], bit[10]} to control pad
driving strength.
00: 2mA
01: 4mA
10: 8mA
11: 16mA
For PDC/F/G, drives pad {bit[11], bit[10]} to control
pull resistor value (1: select the small resistance) and
driving strength (0: select the small driving strength)
respectively.
For PDD/E, drives pad {bit[10]} to control driving
strength.
9
PAD_BIT_PULL_DOWN_RESISTOR_EN R/W
Controls “PD” signal, pull-down resistor enable, resister is
50kohm.
8
PAD_BIT_PULL_UP_RESISTOR_EN
R/W
Controls “PU” signal, pull-up resistor enable, resister is
50kohm.
7:5
RSVD
N/A
Reserved for function ID extension
4:0
PAD_BIT_FUNCTION_ID
R/W
Function ID
Realtek confidential files
The document authorized to
SZ99iot
2019-05-15 10:08:03