Fujitsu MPG3XXXAH-E manual Synthesizer circuit, Transfer rate of each zone, MPG3307AH-E

4.6.4Synthesizer circuit

The drive uses constant density recording to increase total capacity. This is different from the conventional method of recording data with a fixed data transfer rate at all data area. In the constant density recording method, data area is divided into zones by radius and the data transfer rate is set so that the recording density of the inner cylinder of each zone is nearly constant. The drive divides data area into 15 zones to set the data transfer rate. Table 4.1 describes the data transfer rate and recording density (BPI) of each zone.

Table 4.1 Transfer rate of each zone

MPG3307AH-E

Zone	0	1	2	3	4	5	6	7
Cylinder	0	2208	4224	7232	9824	13120	15616	17088
	to	to	to	to	to	to	to	to
	2207	4223	7231	9823	13119	15615	17087	19359
Transfer rate	49.73	48.87	47.22	45.79	43.61	41.88	41.01	39.28
[MB/s]
Zone	8	9	10	11	12	13	14
Cylinder	19360	22048	23840	25248	26592	28768	30176
	to	to	to	to	to	to	to
	22047	23839	25247	26591	28767	30175	30783
Transfer rate	37.22	35.77	34.62	33.45	31.43	30.12	27.92
[MB/s]
MPG3204AH-E / MPG3409AH-E
Zone	0	1	2	3	4	5	6	7
Cylinder	0	2784	5568	8352	11264	13440	16096	17984
	to	to	to	to	to	to	to	to
	2783	5567	8351	11263	13439	16095	17983	19839
Transfer rate	60.71	60.71	60.71	60.71	59.22	56.86	54.90	52.94
[MB/s]
Zone	8	9	10	11	12	13	14
Cylinder	19840	22176	23584	25088	26720	28576	29952
	to	to	to	to	to	to	to
	22175	23583	25087	26719	28575	29951	30783
Transfer rate	50.35	48.82	47.06	45.10	42.75	40.94	38.04
[MB/s]

The MPU transfers the data transfer rate setup data to the RDC that includes the time base generator circuit to change the data transfer rate.

4 - 12 C141-E116-01EN