EZ80F91MCU ZILOG [Zilog, Inc.], EZ80F91MCU Datasheet - Page 9
EZ80F91MCU
Manufacturer Part Number
EZ80F91MCU
Description
eZ80Acclaim-TM Flash Microcontrollers
Manufacturer
ZILOG [Zilog, Inc.]
Datasheet
1.EZ80F91MCU.pdf
(396 pages)
- Current page: 9 of 396
- Download datasheet (5Mb)
PS019209-0504
Ethernet Media Access Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 240
EMAC Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 241
EMAC Interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 244
EMAC Shared Memory Organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . 245
EMAC and the System Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 248
EMAC Operation in HALT Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 249
EMAC Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 249
EMAC Interpacket Gap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 258
Bus Clock Speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239
I
Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 241
Arbiter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 242
TxDMA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 242
RxDMA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 243
EMAC Test Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 249
EMAC Configuration Register 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 251
EMAC Configuration Register 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 253
EMAC Configuration Register 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 254
EMAC Configuration Register 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 255
EMAC Station Address Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 256
EMAC Transmit Pause Timer Value Register—Low and High Bytes . 257
EMAC Interpacket Gap Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . 258
EMAC Interpacket Gap Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 259
EMAC Non-Back-To-Back IPG Register—Part 1 . . . . . . . . . . . . . . . . 260
EMAC Non-Back-To-Back IPG Register—Part 2 . . . . . . . . . . . . . . . . 261
EMAC Maximum Frame Length Register—Low and High Bytes . . . . 261
EMAC Address Filter Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 263
EMAC Hash Table Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 264
EMAC MII Management Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . 265
EMAC PHY Configuration Data Register—Low Byte . . . . . . . . . . . . . 266
EMAC PHY Configuration Data Register—High Byte . . . . . . . . . . . . . 267
EMAC PHY Address Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 267
EMAC PHY Unit Select Address Register . . . . . . . . . . . . . . . . . . . . . . 268
EMAC Transmit Polling Timer Register . . . . . . . . . . . . . . . . . . . . . . . . 268
EMAC Reset Control Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 269
EMAC Transmit Lower Boundary Pointer Register—Low and
EMAC Boundary Pointer Register—Low and High Bytes . . . . . . . . . . 271
EMAC Boundary Pointer Register—Upper Byte . . . . . . . . . . . . . . . . . 272
EMAC Receive High Boundary Pointer Register—Low and
EMAC Receive Read Pointer Register—Low and High Bytes . . . . . . 273
EMAC Buffer Size Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 274
EMAC Interrupt Enable Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 275
2
C Software Reset Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239
High Bytes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 270
High Bytes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 272
P R E L I M I N A R Y
Product Specification
eZ80F91 MCU
Table of Contents
ix
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