EKF PC7-FESTIVAL, User Manual

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User Guide • PC7-FESTIVAL • CompactPCI® PlusIO CPU Board
P-EXP
P-EXP • Expansion Board Interface (LPC/HD-Audio/UART)
1.27mm Socket 2 x 20 (276.53.040.01)
pin orientation
shows
CPU carrier board
top view
GND 1 2 +3.3VS
1)
CLK_24MHZ (CLK_33MHz) 3 4 PLTRST#
LPC_AD0 5 6 LPC_AD1
LPC_AD2 7 8 LPC_AD3
LPC_FRAME# 9 10 NC (LPC_DRQ#)
GND 11 12 +3.3VS
1)
SERIRQ 13 14 PME#
SMI# 15 16 CLK_14MHZ
2_UART_TXD (FWH_ID0) 17 18 2_UART_RXD (FWH_INIT#)
RCIN#
4)
(KBD_RST#) 19 20 2_UART_RTS# (A20GATE)
GND 21 22 +5VS
1)
1_UART_TXD (2_USB2_N) 23 24 1_UART_RTS# (1_USB2_N)
1_UART_RXD (2_USB2_P) 25 26 1_UART_CTS# (1_USB2_P)
2_UART_CTS# (USB2_OC#) 27 28 XDP_RESET#
5)
I2C_SCL
3)
29 30 I2C_SDA
3)
GND 31 32 +5VS
1)
HDA_SDOUT 33 34 HDA_SDIN0
HDA_RST# 35 36 HDA_SYNC
HDA_BITCLK 37 38 HDA_SDIN1
SPEAKER 39 40 +12VA
2)
1) Power rail switched on in S0 state only
2) Power rail passed through via 0R from J1 backplane connector
3) Connected to CM238 PCH I
2
C Bus Controller 0
4) Connected to CM238 PCH pin RCIN#/GPP_A0
5) Connected to debug port reset logic in order to force hardware reset
6) Signals are 3.3V tolerant only
The UART pins of the P-EXP connector allow dual use - either serial I/F (native usage), or GPIO for custom specific
application. Alternate 1: 1 x UART, 4 x GPIO, alternate 2: 8 x GPIO
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