Capabilities Bypass Register I (Cap_byps_reg1) – Offset 814 - 1.2 - ID:615146 | Intel® 400 Series Chipset On-Package Platform Controller Hub

Intel® 400 Series Chipset On-Package Platform Controller Hub

Online Register Database

ID	Date	Version	Classification
615146	08/09/2019	1.2	Public

Capabilities Bypass Register I (Cap_byps_reg1) – Offset 814

Bit Range	Default	Access	Field Name and Description
30:29	-	-	Reserved
28	1h	RW	Timeout Clock Unit (timeout_clock_unit) 1’b1 to Select MHz Clock1’b0 to Select KHz Clock
27:22	01h	RW	Timeout Clock Frequency (timeout_clock_freq)
21	0h	RW	SPI Mode Support (SPI_mode_support) 1’b1 – SPI Mode Supported 1’b0 – SPI Mode Not Supported
20:17	0h	RW	Timer Count for Re-Tuning (timer_count) This is the Timer Count for Re-Tuning Timer for Re-TuningMode 1 to 3. Setting to 4’b0 disables Re-Tuning Timer
16	0h	RW	Use Tuning for SDR50 (tuning_for_SDR50) 1’b1 – Use Tuning 1’b0 – Don’t use Tuning
15	1h	RW	DDR50 Support (ddr50_support) 1’b1 – DDR50 Mode Supported 1’b0 – DDR50 Mode NOT Supported
14	1h	RW	SDR104 Support (sdr104_support) 1’b1 – SDR104 Mode Supported 1’b0 – SDR104 Mode NOT Supported
13	1h	RW	SDR50 Support (sdr50_support) 1’b1 – SDR50 Mode Supported 1’b0 – SDR50 Mode NOT Supported
12:11	0h	RW	Slot Type (Slot_Type) 00 - Removable SD Card Slot 01 - Embedded Slot for One Device 10 - Shared Bus Slot 11 - Reserved
10	1h	RW	Asynchronous Interrupt Support (Asynchronus_Interrupt_Support) 1’b1 – Asynchronous Interrupt Supported 1’b0 – Asynchronous Interrupt NOT Supported
9	-	-	Reserved
8	1h	RW	Voltage Support 1.8V (Voltage_Support_1_8V) 1’b1 – 1.8V Supported 1’b0 – 1.8V NOT Supported
7	0h	RW	Voltage Support 3.0V (Voltage_Support_3V) 1’b1 – 3.0V Supported 1’b0 – 3.0V NOT Supported
6	1h	RW	Voltage Support 3.3V (Voltage_Support_3_3V) 1’b1 – 3.3V Supported 1’b0 – 3.3V NOT Supported
5	0h	RW	Suspend/Resume Support (Suspend_Resume_Support) 1’b1 – Suspend/Resume Supported 1’b0 – Suspend/Resume NOT Supported
4	1h	RW	SDMA Support (SDMA_Support) 1’b1 – SDMA Mode Supported 1’b0 – SDMA Mode NOT Supported
3	1h	RW	High Speed Support (High_Speed_support) 1’b1 – High Speed Mode Supported 1’b0 – High Speed Mode NOT Supported
2	1h	RW	ADMA2 Support (ADMA2_Support) 1’b1 – ADMA2 Mode Supported 1’b0 – ADAM2 Mode NOT Supported
1:0	0h	RW	Max Burst Length (Max_Burst_Length) Maximum Block Length supported by the Core/Device 00: 512 (Bytes) 01: 1024 10: 2048 11: Reserved