18
Specifications ispGDX240VA
I/O Input/Output Pins – These are the general purpose bidirectional data pins. When used as outputs,
each may be independently latched, registered or tristated. They can also each assume one other
control function (OE, CLK/CLKEN, and MUXsel as described in the text).
TOE Test Output Enable Pin – This pin tristates all I/O pins when a logic low is driven.
RESET Active LOW Input Pin – Resets all I/O register outputs when LOW.
Yx/CLKENx Input Pins –These can be either Global Clocks or Clock Enables.
EPEN Input Pin – JTAG TAP Controller Enable Pin. When high, JTAG operation is enabled. When low,
JTAG TAP controller is driven to reset.
TDI Input Pin – Serial data input during ISP programming or Boundary Scan mode.
TCK Input Pin – Serial data clock during ISP programming or Boundary Scan mode.
TMS Input Pin – Control input during ISP programming or Boundary Scan mode.
TDO Output Pin – Serial data output during ISP programming or Boundary Scan mode.
GND Ground (GND)
VCC Vcc – Supply voltage (3.3V).
VCCIO Input – This pin is used if optional 2.5V output is to be used. Every I/O can independently select either
3.3V or the optional voltage as its output level. If the optional output voltage is not required, this pin
must be connected to the VCC supply. Programmable pull-up resistors and bus-hold latches only draw
current from this supply.
NC
1
No Connect.
Signal Descriptions
Signal Name Description
1. NC pins are not to be connected to any active signals, VCC or GND.
Signal Locations: ispGDX240VA
Signal 388-Ball fpBGA
TOE L22
RESET L21
Y0/CLKEN0 M4
Y1/CLKEN1 L3
Y2/CLKEN2 M20
Y3/CLKEN3 M21
EPEN A11
TDI M1
TCK L1
TMS L2
TDO AB12
GND A1, A22, B2, B21, C3, C20, D4, D19, H9, H10, H11, H12, H13, H14, J8, J9, J10, J11, J12, J13, J14, J15, K8,
K9, K10, K11, K12, K13, K14, K15, L8, L9, L10, L11, L12, L13, L14, L15, M8, M9, M10, M11, M12, M13,
M14, M15, N8, N9, N10, N11, N12, N13, N14, N15, P8, P9, P10, P11, P12, P13, P14, P15, R9, R10, R11,
R12, R13, R14, W4, W19, Y3, Y20, AA2, AA21, AB1, AB22
VCC D6, D9, D12, D14, D17, F4, F19, G7, G8, G15, G16, H7, H16, J4, J19, L4, M19, P4, P19, R7, R16, T7, T8,
T15, T16, U4, U19, W6, W9, W11, W14, W17
VCCIO M22
NC
1
G9, G10, G11, G12, G13, G14, H8, H15, J7, J16, K7, K16, L7, L16, M7. M16, N7, N16, P7, P16, R8,
R15, T9, T10, T11, T12, T13, T14
1. NC pins are not to be connected to any active signals, VCC or GND.
