MPC8360E/MPC8358E PowerQUICC II Pro Processor Revision 2.x TBGA Silicon Hardware Specifications, Rev. 4
28
Freescale Semiconductor
UCC Ethernet Controller: Three-Speed Ethernet, MII Management
7.2
DUART AC Electrical Specifications
Table 24
provides the AC timing parameters for the DUART interface of the device.
8
UCC Ethernet Controller: Three-Speed Ethernet,
MII Management
This section provides the AC and DC electrical characteristics for three-speed, 10/100/1000, and MII
management.
8.1
Three-Speed Ethernet Controller (10/100/1000 Mbps)—
GMII/MII/RMII/TBI/RGMII/RTBI Electrical Characteristics
The electrical characteristics specified here apply to all GMII (gigabit media independent interface), MII
(media independent interface), RMII (reduced media independent interface), TBI (ten-bit interface),
RGMII (reduced gigabit media independent interface), and RTBI (reduced ten-bit interface) signals except
MDIO (management data input/output) and MDC (management data clock). The MII, RMII, GMII, and
TBI interfaces are only defined for 3.3 V, while the RGMII and RTBI interfaces are only defined for 2.5 V.
The RGMII and RTBI interfaces follow the Hewlett-Packard reduced pin-count interface for Gigabit
Ethernet Physical Layer Device Specification Version 1.2a (9/22/2000). The electrical characteristics for
the MDIO and MDC are specified in
Section 8.3, “Ethernet Management Interface Electrical
Characteristics.”
8.1.1
10/100/1000 Ethernet DC Electrical Characteristics
The electrical characteristics specified here apply to media independent interface (MII), reduced gigabit
media independent interface (RGMII), reduced ten-bit interface (RTBI), reduced media independent
interface (RMII) signals, management data input/output (MDIO) and management data clock (MDC).
The MII and RMII interfaces are defined for 3.3 V, while the RGMII and RTBI interfaces can be operated
at 2.5 V. The RGMII and RTBI interfaces follow the Reduced Gigabit Media-Independent Interface
(RGMII) Specification Version 1.3. The RMII interface follows the RMII Consortium RMII Specification
Version 1.2.
Table 24. DUART AC Timing Specifications
Parameter
Value
Unit
Notes
Minimum baud rate
256
baud
—
Maximum baud rate
>1,000,000
baud
1
Oversample rate
16
—
2
Notes:
1. Actual attainable baud rate will be limited by the latency of interrupt processing.
2. The middle of a start bit is detected as the eighth sampled 0 after the 1-to-0 transition of the start bit. Subsequent bit values
are sampled each sixteenth sample.