User guide

Chapter 3 Hardware
Express-IBR Reference Manual 29
A20 SATA0_RX- B20 SATA1_RX-
A21 GND B21 GND
A22 SATA2_TX+ B22 SATA3_TX+
A23 SATA2_TX- B23 SATA3_TX-
A24 SUS_S5# B24 PWR_OK (PU 10k 3.3V)
A25 SATA2_RX+ B25 SATA3_RX+
A26 SATA2_RX- B26 SATA3_RX-
A27 BATLOW# (PU 8.2k 3.3V S5 Standby;
Int. PU 20k in PCH)
B27 WDT
A28 ATA_ACT# (PU 10k 3.3V) B28 AC_SDIN2 (Int. PD 20k in PCH)
A29 AC/HDA_SYNC (Int. PD 20k in PCH) B29 AC_SDIN1 (Int. PD 20k in PCH)
A30 AC/HDA_RST# B30 AC_SDIN0 (Int. PD 20k in PCH)
A31 GND B31 GND
A32 AC/HDA_BITCLK B32 SPKR (Int. PD 20k in PCH)
A33 AC/HDA_SDOUT B33 I2C_CK (PU 4.7k 3.3V)
A34 BIOS_DISABLE# B34 I2C_DAT (PU 4.7k 3.3V)
A35 THRMTRIP# (PU 330R 3.3V) B35 THRM#
A36 USB6- (Int. PD 20k in PCH) B36 USB7- (Int. PD 20k in PCH)
A37 USB6+ (Int. PD 20k in PCH) B37 USB7+ (Int. PD 20k in PCH)
A38 USB_6_7_OC# (PU 10k 3.3V Standby) B38 USB_4_5_OC# (PU 10k 3.3V Standby)
A39 USB4- (Int. PD 20k in PCH) B39 USB5- (Int. PD 20k in PCH)
A40 USB4+ (Int. PD 20k in PCH) B40 USB5+ (Int. PD 20k in PCH)
A41 GND B41 GND
A42 USB2- (Int. PD 20k in PCH) B42 USB3- (Int. PD 20k in PCH)
A43 USB2+ (Int. PD 20k in PCH) B43 USB3+ (Int. PD 20k in PCH)
A44 USB_2_3_OC# (PU 10k 3.3V Standby) B44 USB_0_1_OC# (PU 10k 3.3V Standby)
A45 USB0- (Int. PD 20k in PCH) B45 USB1- (Int. PD 20k in PCH)
A46 USB0+ (Int. PD 20k in PCH) B46 USB1+ (Int. PD 20k in PCH)
A47 VCC_RTC B47 EXCD1_PERST#
A48 EXCD0_PERST# B48 EXCD1_CPPE# (PU 10k 3.3V)
A49 EXCD0_CPPE# (PU 10k 3.3V) B49 SYS_RESET# (PU 10k 5V )
A50 LPC_SERIRQ (PU 10k 3.3V) B50 CB_RESET#
A51 GND B51 GND
A52 PCIE6_TX+ B52 PCIE6_RX+
A53 PCIE6_TX- B53 PCIE6_RX-
A54 GPI0 (PU 10k 3.3V) B54 GPO1 (PU 10k 3.3V)
A55 PCIE5_TX+ B55 PCIE5_RX+
A56 PCIE5_TX- B56 PCIE5_RX-
A57 GND B57 GPO2 (PU 10k 3.3V)
A58 PCIE4_TX+ B58 PCIE4_RX+
A59 PCIE4_TX- B59 PCIE4_RX-
Table 3-5. COM Express A-B Connector Signal Descriptions (CN6) (Continued)