TSI148-133CL IDT, Integrated Device Technology Inc, TSI148-133CL Datasheet - Page 34

• Manufacturer Part Number: TSI148-133CL
• Description: IC PCI-VME BRIDGE 456PBGA
• Manufacturer: IDT, Integrated Device Technology Inc
• Series: Tsi148&Trade;r

Specifications of TSI148-133CL

• Applications: PCI-to-VME Bridge
• Interface: PCI
• Voltage - Supply: 3.3V
• Package / Case: 456-PBGA
• Mounting Type: Surface Mount
• Package Type: BGA
• Rad Hardened: No
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 800-1906

1. Functional Overview > VMEbus Interface
1.2.5.3
1.2.5.4
1.2.5.5
1.2.5.6
34
SYSRESET Driver
A SYSRESET driver is included in the Tsi148 to provide a global system reset. The SRSTO
signal is asserted in the following cases: the LSRSTI_ pin is asserted, the SRESET bit is
asserted in the VMEbus Control Status Register, or the PURSTI_ pin is asserted. The SRSTO
signal is always asserted for at least 200 ms. SRSTO is normally connected to the VMEbus
SYSRESET_ signal through an inverting open collector buffer.
Global VMEbus Timer
The Tsi148 has a VMEbus global timer that monitors VMEbus cycles and generates a BERR
signal when there is no VMEbus slave response for the programmed time period. The global
timer only monitors VMEbus cycles when the system controller function is enabled. The
global timer is compatible with SCT, BLT, MBLT, 2eVME, and 2eSST transfers. The global
time-out period can be programmed for 8, 16, 32, 64, 128, 256, 512 s. This timer can be
enabled or disabled in the VMEbus Control and Status Register (see
page
System Clock Driver
Tsi148 generates the system clock (SYSCLK) signal when it is configured as the system
controller. The SYSCLK signal is in spec for the following PCI/X clock frequencies: 33.3,
66.6, 100, or 133 MHz. The SYSCLK pin is connected through an external driver to the
VMEbus. SYSCLK operates at 16 MHz. The external driver is enabled through the SCON
pin (see
Configuration
The system controller functions can be configured at power-up. The system controller
functionality can be enabled or disabled, or the auto system controller (SCON) function can
be used. The auto SCON function automatically enables the system controller functions when
the board is installed in slot 1.
that enable or disable the SCON functionality.
253).
Section 8.4.2 on page
157).
Table 10 on page 131
Tsi148 PCI/X-to-VME Bus Bridge User Manual
shows the different signal combinations
Section 10.4.34 on
80A3020_MA001_13