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ZEUS Technical Manual Detailed hardware description
© 2007 Eurotech Ltd Issue D 24
GPIO
No AF
Signal name Dir Active
Function
Wake-up
source
See section…
32 2 MMCLK Output NA SDIO Clock SDIO, page 39
33 2 SRAM_CS5# Output Low Chip Select 5 - SRAM Static RAM, page 34
34 1 GSM_FFRXD Input NA Modem Receive Data
Wireless modem and
GPS receiver
, page 35
35 0 CF_CD# Input
Compact Flash Card Detect
IRQ
3
CompactFlash
, page 40
36 1
GSM_FFDCD#
Input NA Modem Data Carrier Detect
37 1
GSM_FFDSR#
Input NA Modem Data Sender Ready
38 1 GSM_FFRI# Input NA Modem Ring Indicator
39 2 GSM_FFTXD Output NA Modem Transmit Data
40 2
GSM_FFDTR#
Output NA
Modem Data Terminal
Ready
41 2
GSM_FFRTS#
Output NA Modem Request To Send
Wireless modem and
GPS receiver
, page 35
42 1 ZB_BTRXD Input NA ZigBee Receive Data
43 2 ZB_BTTXD Output NA ZigBee Transmit Data
44 1 ZB_BTCTS# Input NA ZigBee Clear To Send
45 2 ZB_BTRTS# Output NA ZigBee Request To Send
IEEE802.15.4 / ZigBee
module, page 37
46 2
GPS_STDRXD
Input
NA GPS Receive Data
47 1
GPS_STDTXD
Output
NA GPS Transmit Data
Wireless modem and
GPS receiver
, page 35
48 2 CB_POE# Output Low Card Bus Output Enable
49 2 CB_PWE# Output Low Card Bus Write Enable
50 2 CB_PIOR# Output Low Card Bus I/O Read
51 2 CB_PIOW# Output Low Card Bus I/O Write
Expansion interfaces
,
page 38
continued…