Silicon Laboratories Si825x, Руководство пользователя

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S i 8 2 5 x M u l t i - P h a s e P O L - R D
Rev. 0.2 21
10.6. SMBus Connector (J6)
The J6 connector is the SMBus interface connector for the Si8250 Multi-Phase POL Target Board. Table 6 shows
the J6 pin definitions.
10.7. Si8250 DEBUG Interface (J7)
The Si8250 DEBUG connector (J7) provides access to the DEBUG (C2) pins of the Si8250 device on the target
board. It is used to connect the USB Debug Adapter to the target board for in-circuit debugging and programming.
Table 7 shows the J7 Si8250 DEBUG pin definitions.
10.8. Si8250 ENABLE Polarity Select (JP1)
The JP1 jumper selects the polarity of the reset line for the Si8250. When installed, the reset signal is active high;
otherwise, it is active low.
10.9. Voltage and Current Sense Test Points
The Si8250 Multi-Phase POL Target Board has several test points for V
REF
, V
INSENSE
, I
IN
, V
SENSE
, all PHn, I
PK
,
and more. These test points correspond to the respective pins on the Si8250-IQ integrated circuit as well as other
useful inspection points. See “12. Schematics” on page 23.
Table 6. J6 Pin Descriptions
Pin # Description
1 SCL
2 DGND
3 SDA
4 DGND
5 SMBA
6 DGND
Table 7. P1 Si8250 DEBUG Connector Pin Descriptions
Pin # Description
1 +2.5 V
2, 3, 9 DGND
4 C2D
7 RST/C2CK
5, 6, 8, 10 Not Connected