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μ
PD720210
5. Pin Strapping
5.1
Pin Strapping Settings
Some pins are used to set the configuration of the chip functions, by being pulled up or down at the end of chip
reset (RESETB). The list of the configurations is shown Table 5-1.
The below pins are associated with the strapping setting. The details of each pin refer to Chapter 2.
SPICSB, SPISI/LED2B, SPISO/LED3B, SPISCK/LED4B
OCI1B, OCI2B, OCI3B, OCI4B, PPON1B/NRDRSTB, PPON2B, PPON3B, PPON4B
LED1B/SUSPEND, SUSPEND/NRDCLKO
Caution: The level of each pin is sampled just after reset, and used for the configuration as follows.
Signal Name in the tables refers to the level of the pin latched at the end of reset. These pins
should be either pulled up or pulled down for the expected function of the hub. In the
following tables, pull-up is shown as "1", pull-down is "0". "X" represents "Don't Care".
No
Configuration
1
Using SPI ROM
2
LED function
3
Number of ports
4
Non-Removable ports setting
Gang/Individual settings, and
5
PowerOn2PowerGood setting
6
Battery Charging setting
GIO(SUSPEND/NRDCLKO) pin
7
usage
8
Address length of External ROM
9
PPON1B Output function
(Note1) This parameter value needs to be set the same as the strap pin setting by the
μ
PD720210 ROM Writing Tool for Windows (W210ROMTOOL.exe)
(Note2) This parameter value can be set arbitrarily by the
Windows (W210ROMTOOL.exe) regardless of the strap pin setting.
(Note3) This parameter value cannot be set controlled by the
Windows (W210ROMTOOL.exe) Strap pin setting is required.
(Note4) Need to connect pull-up or pull-down.
The details of each configuration are as below. The "No" column in each table below refers to the
configuration case listed in Table 5-1.
5.1.1
External SPI ROM
This configuration sets whether the external SPI ROM is used or not.
[Pin Strapping Setting]
No
Configuration
1
External SPI ROM
R19UH0093EJ0200 Rev.2.00
May 26, 2014
Table 5-1. Pin Strapping Setting
w/ the external SPI ROM
Refer to 5.1.1
Don't care (Note 4)
(LED function is disabled)
Refer to 5.1.3 (Note 1)
Refer to 5.1.4 (Note 1)
Refer to 5.1.5 (Note 1)
Refer to 5.1.6 (Note 2)
Refer to 5.1.7 (Note 2)
Refer to 5.1.8 (Note 3)
Refer to 5.1.9 (Note 3)
Table 5-2. External SPI ROM
SPICSB
Definition
0
No SPI ROM
1
SPI ROM attached
w/o the external SPI ROM
Refer to 5.1.2
Refer to 5.1.4
Refer to 5.1.5
Refer to 5.1.6
Refer to 5.1.7
Not applicable (Note 4)
Refer to 5.1.9
μ
PD720210 ROM Writing Tool for
μ
PD720210 ROM Writing Tool for
5. Pin Strapping
Page 32 of 59
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