UPD61052 NEC, UPD61052 Datasheet - Page 54

• Manufacturer Part Number: UPD61052
• Description: MPEG2 Audio / Video Encoder
• Manufacturer: NEC

4.2.3
one piece of firmware and it can be replaced depending on the need, too.
canceled on the way, the internal CPU sometime malfunction. The number of the transfer bytes is a 4-byte unit.
54
The host CPU can store firmware in the instruction pool area of SDRAM for the internal CPU. It stores more than
When transferring data continuously, transfer during resetting an internal CPU, If reset of internal CPU is can
Host CPU to SDRAM
N
Host CPU→SDRAM transfer
Destination address register
Interrupt register 0 (30H)←
Number of transefer bytes
Interrupt register 0 (30H)
Interrupt register 0 clear
Transfer counter register
Transfer mode register
Transfer data register
Reset register (3EH)
(3FH) ← Instruction
(30H): (02H or 01H)
(24H to 26H) setting
(27H to 29H) setting
(20H) ← 40H setting
Interrupt register 0
Internal CPU reset
writing ending?
writing ending?
All instruction
←02H setting
Instruction
download
128 bytes
CINT?
N
Y
Y
Y
Data Sheet S15082EJ4V0DS
N
N
Y
Internal CPU reset is canceled
Transfer ending (refer to 4.7)
Transfer error handling
(3EH)←00H setting
Interrupt register 0
Reset register
(refer to 4.8)
(30H): 04H
Return
Return
Y
N
µ
PD61051, 61052