User`s manual

Am186™CC Microcontroller Router Reference Design User’s Manual
B-2
PIO38 CTS_B T7237A SCLK CNTL
PIO40 RCLK_B POTS Line 1 ringing signal
PIO41 TCLK_B POTS Line 2 ringing signal
PIO2 PCS5 DTMF1 OE
PIO3 PCS4 DTMF2 OE
PIO44 CTSC High-Speed UART CTSHU
PIO45 RTRC High-Speed UART RTRHU
Table B-2. Chip Select Assignments
Chip Select Device Interface
UCS
Flash 16-bit
LCS
/RAS0 DRAM 16-bit
MCS1
/CAS1 DRAM 16-bit
MCS2
/CAS0 DRAM 16-bit
MCS0
SRAM 16-bit
PCS1
Am79C32A 8-bit
PCS2
PCnet-ISA II 8-bit
PCS3
TIP Ethernet 8-bit
PCS4
DTMF2 4-bit
PCS5
DTMF1 4-bit
Table B-3. Interrupt Assignments
Interrupt Device Polarity
INT6 Am79C32A Active Low edge
INT2 T7237A Active Low edge
INT3 PCnet-ISA II Active High edge
Table B-1. PIO Resource Assignments (Continued)
PIO Signal Function
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