
File: pins.fm5, modified 7/25/99
PRELIMINARY INFORMATION
1-1
Pin List
Chapter 1
by Fuad Abunofal, Naeem Maan, Gert Slavenburg
1.1
TM1100 VERSUS TM1000
TM1100 is 100% upwards pinout compatible with TM1000. TM1100 is usable at 100 MHz SDRAM speed in any
TM1000 board design. For new 133 MHz SDRAM speed designs, a change in the use of MATCHOUT-MATCHIN is
recommended. See
Section 1.10.3.1. Furthermore, board series terminator resistors as close as possible to the
TM1100 are recommended for the outputs MM_CLK0, MM_CLK1, VO_CLK, AI_OSCLK, AI_SCK, AO_OSCLK and
AO_SCK.
1.2
BOUNDARY SCAN NOTICE
TM1100 implements full IEEE 1149.1 boundary scan. Any TM1100 pin designated “IN” only (from functionality point of
view), can become an output during boundary scan.
1.3
DOCUMENT STATUS
This chapter has been updated to reflect tm1100-1.5 silicon.
1.4
I/O CIRCUIT SUMMARY
TM1100 has a total of 163 functional pins, not counting VDDQ, VSSQ, VREF_PCI and VREF_PERIPH and digital pow-
er/ground. TM1100 pins use 1 of the 6 electrical I/O types below.
For the pins with 5 Volt input tolerance capability, the special pins VREF_PCI or VREF_PERIPH determine 3.3 or 5
The above I/O types are used in the modes listed in the following table.
Pad Type
Pad Type Description
PCI
PCI2.1 compliant I/O, capable of using 3.3V or 5V PCI signalling conventions.
PCIOD
PCI2.1 compliant Open Drain I/O, capable of using 3.3V or 5V PCI signalling conventions.
STRG3
3.3-Volt only low impedance I/O. Requires board level series terminator resistor to match PCB trace.
NORM3
3.3-Volt only I/O circuit with normal drive strength and board trace matched drive impedance.
NORM5
5-Volt tolerant I/O circuit with normal drive strength and board trace matched drive impedance.
IICOD
Open drain 3.3 or 5 Volt capable I/O for I2C bus.
Modes
Description
IN
Input only, except during boundary scan
OUT
Output only, except during boundary scan
OD
Open Drain Output - active pull low, no active drive high, requires external pullup
I/O
Output or input
I/OD
Open drain output or input - active pull low, no active drive high, requires external pullup
PWR
Always connected to a supply source
GND
Always connected to ground